hybrid cloud

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Secure AI RAG using F5 Distributed Cloud in Red Hat OpenShift AI and NetApp ONTAP Environment
Introduction Retrieval Augmented Generation (RAG) is a powerful technique that allows Large Language Models (LLMs) to access information beyond their training data. The “R” in RAG refers to the data retrieval process, where the system retrieves relevant information from an external knowledge base based on the input query. Next, the “A” in RAG represents the augmentation of context enrichment, as the system combines the retrieved relevant information and the input query to create a more comprehensive prompt for the LLM. Lastly, the “G” in RAG stands for response generation, where the LLM generates a response with a more contextually accurate output based on the augmented prompt as a result. RAG is becoming increasingly popular in enterprise AI applications due to its ability to provide more accurate and contextually relevant responses to a wide range of queries. However, deploying RAG can introduce complexity due to its components being located in different environments. For instance, the datastore or corpus, which is a collection of data, is typically on-premise for enhanced control over data access and management due to data security, governance, and compliance with regulations within the enterprise. Meanwhile, inference services are often deployed in the cloud for their scalability and cost-effectiveness. In this article, we will discuss how F5 Distributed Cloud can simplify the complexity and securely connect all RAG components seamlessly for enterprise RAG-enabled AI applications deployments. Specifically, we will focus on Network Connect, App Connect, and Web App & API Protection. We will demonstrate how these F5 Distributed Cloud features can be leveraged to secure RAG in collaboration with Red Hat OpenShift AI and NetApp ONTAP. Example Topology F5 Distributed Cloud Network Connect F5 Distributed Cloud Network Connect enables seamless and secure network connectivity across hybrid and multicloud environments. By deploying F5 Distributed Cloud Customer Edge (CE) at site, it allows us to easily establish encrypted site-to-site connectivity across on-premises, multi-cloud, and edge environment. Jensen Huang, CEO of NVIDIA, has said that "Nearly half of the files in the world are stored on-prem on NetApp.”. In our example, enterprise data stores are deployed on NetApp ONTAP in a data center in Seattle managed by organization B (Segment-B: s-gorman-production-segment), while RAG services, including embedding Large Language Model (LLM) and vector database, is deployed on-premise on a Red Hat OpenShift cluster in a data center in California managed by Organization A (Segment-A: jy-ocp). By leveraging F5 Distributed Cloud Network Connect, we can quickly and easily establish a secure connection for seamless and efficient data transfer from the enterprise data stores to RAG services between these two segments only: F5 Distributed Cloud CE can be deployed as a virtual machine (VM) or as a pod on a Red Hat OpenShift cluster. In California, we deploy the CE as a VM using Red Hat OpenShift Virtualization — click here to find out more on Deploying F5 Distributed Cloud Customer Edge in Red Hat OpenShift Virtualization: Segment-A: jy-ocp on CE in California and Segment-B: s-gorman-production-segment on CE in Seattle: Simply and securely connect Segment-A: jy-ocp and Segment-B: s-gorman-production-segment only, using Segment Connector: NetApp ONTAP in Seattle has a LUN named “tbd-RAG”, which serves as the enterprise data store in our demo setup and contains a collection of data. After these two data centers are connected using F5 XC Network Connect, a secure encrypted end-to-end connection is established between them. In our example, “test-ai-tbd” is in the data center in California where it hosts the RAG services, including embedding Large Language Model (LLM) and vector database, and it can now successfully connect to the enterprise data stores on NetApp ONTAP in the data center in Seattle: F5 Distributed Cloud App Connect F5 Distributed Cloud App Connect securely connects and delivers distributed applications and services across hybrid and multicloud environments. By utilizing F5 Distributed Cloud App Connect, we can direct the inference traffic through F5 Distributed Cloud's security layers to safeguard our inference endpoints. Red Hat OpenShift on Amazon Web Services (ROSA) is a fully managed service that allows users to develop, run, and scale applications in a native AWS environment. We can host our inference service on ROSA so that we can leverage the scalability, cost-effectiveness, and numerous benefits of AWS’s managed infrastructure services. For instance, we can host our inference service on ROSA by deploying Ollama with multiple AI/ML models: Or, we can enable Model Serving on Red Hat OpenShift AI (RHOAI). Red Hat OpenShift AI (RHOAI) is a flexible and scalable AI/ML platform builds on the capabilities of Red Hat OpenShift that facilitates collaboration among data scientists, engineers, and app developers. This platform allows them to serve, build, train, deploy, test, and monitor AI/ML models and applications either on-premise or in the cloud, fostering efficient innovation within organizations. In our example, we use Red Hat OpenShift AI (RHOAI) Model Serving on ROSA for our inference service: Once inference service is deployed on ROSA, we can utilize F5 Distributed Cloud to secure our inference endpoint by steering the inference traffic through F5 Distributed Cloud's security layers, which offers an extensive suite of features designed specifically for the security of modern AI/ML inference endpoints. This setup would allow us to scrutinize requests, implement policies for detected threats, and protect sensitive datasets before they reach the inferencing service hosted within ROSA. In our example, we setup a F5 Distributed Cloud HTTP Load Balancer (rhoai-llm-serving.f5-demo.com), and we advertise it to the CE in the datacenter in California only: We now reach our Red Hat OpenShift AI (RHOAI) inference endpoint through F5 Distributed Cloud: F5 Distributed Cloud Web App & API Protection F5 Distributed Cloud Web App & API Protection provides comprehensive sets of security features, and uniform observability and policy enforcement to protect apps and APIs across hybrid and multicloud environments. We utilize F5 Distributed Cloud App Connect to steer the inference traffic through F5 Distributed Cloud to secure our inference endpoint. In our example, we protect our Red Hat OpenShift AI (RHOAI) inference endpoint by rate-limiting the access, so that we can ensure no single client would exhaust the inference service: A "Too Many Requests" is received in the response when a single client repeatedly requests access to the inference service at a rate higher than the configured threshold: This is just one of the many security features to protect our inference service. Click here to find out more on Securing Model Serving in Red Hat OpenShift AI (on ROSA) with F5 Distributed Cloud API Security. Demonstration In a real-world scenario, the front-end application could be hosted on the cloud, or hosted at the edge, or served through F5 Distributed Cloud, offering flexible alternatives for efficient application delivery based on user preferences and specific needs. To illustrate how all the discussed components work seamlessly together, we simplify our example by deploying Open WebUI as the front-end application on the Red Hat OpenShift cluster in the data center in California, which includes RAG services. While a DPU or GPU could be used for improved performance, our setup utilizes a CPU for inferencing tasks. We connect our app to our enterprise data stores deployed on NetApp ONTAP in the data center in Seattle using F5 Distributed Cloud Network Connect, where we have a copy of "Chapter 1. About the Migration Toolkit for Virtualization" from Red Hat. These documents are processed and saved to the Vector DB: Our embedding Large Language Model (LLM) is Sentence-Transformers/all-MiniLM-L6-v2, and here is our RAG template: Instead of connecting to the inference endpoint on Red Hat OpenShift AI (RHOAI) on ROSA directly, we connect to the F5 Distributed Cloud HTTP Load Balancer (rhoai-llm-serving.f5-demo.com) from F5 Distributed Cloud App Connect: Previously, we asked, "What is MTV?“ and we never received a response related to Red Hat Migration Toolkit for Virtualization: Now, let's try asking the same question again with RAG services enabled: We finally received the response we had anticipated. Next, we use F5 Distributed Cloud Web App & API Protection to safeguard our Red Hat OpenShift AI (RHOAI) inference endpoint on ROSA by rate-limiting the access, thus preventing a single client from exhausting the inference service: As expected, we received "Too Many Requests" in the response on our app upon requesting the inference service at a rate greater than the set threshold: With F5 Distributed Cloud's real-time observability and security analytics from the F5 Distributed Console, we can proactively monitor for potential threats. For example, if necessary, we can block a client from accessing the inference service by adding it to the Blocked Clients List: As expected, this specific client is now unable to access the inference service: Summary Deploying and securing RAG for enterprise RAG-enabled AI applications in a multi-vendor, hybrid, and multi-cloud environment can present complex challenges. In collaboration with Red Hat OpenShift AI (RHOAI) and NetApp ONTAP, F5 Distributed Cloud provides an effortless solution that secures RAG components seamlessly for enterprise RAG-enabled AI applications.
Jennifer_Yeung
Feb 25, 2025 Place Technical Articles
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Simplify Network Segmentation for Hybrid Cloud
Introduction Enterprises have always had the need to maintain separate development and production environments. Operational efficiency, reduction of blast radius, security and compliance are generally the common objectives behind separating these environments. By dividing networks into smaller, isolated segments, organizations can enhance security, optimize performance, and ensure regulatory compliance. This article demonstrates a practical strategy for implementing network segmentation in modern multicloud environments that also connect on-prem infrastructure. This uses F5 Distributed Cloud (F5 XC) services to connect and secure network segments in cloud environments like Amazon Web Services (AWS) and on-prem datacenters. Need for Segmentation Network segmentation is critical for managing complex enterprise environments. Traditional methods like Virtual Routing and Forwarding (VRFs) and Multiprotocol Label Switching (MPLS) have long been used to create isolated network segments in on-prem setups. F5 XC ensures segmentation in environments like AWS and it can extend the same segmentation to on-prem environments. These techniques separate traffic, enhance security, and improve network management by preventing unauthorized access and minimizing the attack surface. Scenario Overview Our scenario depicts an enterprise with three different environments (prod, dev, and shared services) extended between on-prem and cloud. A 3rd party entity requires access to a subset of the enterprise's services. This article, covers the following two networking segmentation use-cases: Hybrid Cloud Transit Extranet (servicing external 3 rd party partners/customers) Hybrid Cloud Transit Consider an enterprise with three distinct environments: Production (Prod), Development (Dev), and Shared Services. Each environment requires strict isolation to ensure security and performance. Using F5 XC Cloud Connect, we can assign each VPC a network segment effectively isolating the VPC’s. Segments in multiple locations (or VPC’s) can traverse F5 XC to reach distant locations whether in another cloud environment or on-prem. Network segments are isolated by default, for example, our Prod segment cannot access Shared. A segment connector is needed to allow traffic between Prod and Shared. The following diagram shows the VPC segments, ensuring complete "ships in the night" isolation between environments. In this setup, Prod, Dev, and Shared Services environments operate independently and are completely isolated from one another at the control plane level. This ensures that any issues or attacks in one environment do not affect the others. Customer Requirement: Shared Services Access Many enterprises deploy common services across their organization to support internal workloads and applications. Some examples include DHCP, DNS, NTP, and NFS, services that need to be accessible to both Prod and Dev environments while keeping Prod and Dev separate from each other. Segment Connectors is a method to allow communication between two isolated segments by leaking the routes between the source and destination segments. It is important to note that segment connector can be of type Direct or SNAT. Direct allows bidirectional communication between segments whereas the SNAT option allows unidirectional communication from the source to the destination. Extending Segmentation to On-Premises Enterprises already use segmented networks within their on-premises infrastructure. Extending this segmentation to AWS involves creating similar isolated segments in the cloud and establishing secure communication channels. F5 XC allows you to easily extend this segmentation from on-prem to the cloud regardless of the underlay technology. In this scenario, communication between the on-premises Prod segment and its cloud counterpart is seamless, and the same also applies for the Dev segment. Meanwhile Dev and Prod stay separate ensuring that existing security and isolation is preserved across the hybrid environment. Extranet In this scenario an external entity (customer/partner) needs access to a few applications within our Prod segment. There are two different ways to enable this access, Network-centric and App-centric. Let’s refer to the external entity as Company B. In order to connect Company B we generally need appropriate cloud credentials, but Company B will not share their cloud credentials with us. To solve this problem, F5 XC recommends using AWS STS:AssumeRole functionality whereby Company B creates an AWS IAM Role that trusts F5 XC with the minimum privileges necessary to configure Transit Gateway (TGW) attachments and TGW route table entries to extend access to the F5 XC network or network segments. Section 1 – Network-centric Extranet Many times, partners & customers need to access a unique subset of your enterprise’s applications. This can be achieved with F5 XC’s dedicated network segments and segment connectors. With a segment connector for the external and prod network segments, we can give Company B access to the required HTTP service without gaining broader access to other non-Prod segments. Locking Down with Firewall Policies We can implement a Zero Trust firewall policy to lock down access from the external segment. By refining these policies, we ensure that third-party consumers can only access the services they are authorized to use. Our firewall policy on the CE only allows access from the external segment to the intended application on TCP/80 in Prod. [ec2-user@ip-10-150-10-146 ~]$ curl --head 10.1.10.100 HTTP/1.1 200 OK Server: nginx/1.24.0 (Ubuntu) Date: Thu, 30 May 2024 20:50:30 GMT Content-Type: text/html Content-Length: 615 Last-Modified: Wed, 22 May 2024 21:35:11 GMT Connection: keep-alive ETag: "664e650f-267" Accept-Ranges: bytes [ec2-user@ip-10-150-10-146 ~]$ ping -O 10.1.10.100 PING 10.1.10.100 (10.1.10.100) 56(84) bytes of data. no answer yet for icmp_seq=1 no answer yet for icmp_seq=2 no answer yet for icmp_seq=3 ^C --- 10.1.10.100 ping statistics --- 4 packets transmitted, 0 received, 100% packet loss, time 3153ms After applying the new policies, we confirm that the third-party access is restricted to the intended services only, enhancing security and compliance. This demonstrates how F5 Distributed Cloud services enable networking segmentation across on-prem and cloud environments, with granular control over security policies applied between the segments. Section 2 - App-centric Extranet In the scenario above, Company B can directly access one or more services in Prod with a segment connector and we’ve locked it down with a firewall policy. For the App-centric method, we’ll only publish the intended services that live in Prod to the external segment. App-centric connectivity is made possible without a segment connector by using load balancers within App Connect that target the application within the Prod segment and advertises its VIP address to the external segment. The following illustration shows how to configure each component in the load balancer. Visualization of Traffic Flows The visualization flow analysis tool in the F5 XC Console shows traffic flows between the connected environments. By analyzing these flows, particularly between third-party consumers and the Prod environment, we can identify any unintended access or overreach. The following diagram is for a Network-centric connection flow: This following diagram shows an App-centric connection flow using the load balancer: Product Feature Demo Conclusion Effective network segmentation is a cornerstone of secure and efficient cloud environments. We’ve discussed how F5 XC enables hybrid cloud transit and extranet communication. Extranet can be done with either a network centric or app-centric deployment. F5 XC is an end to end platform that manages and orchestrates end-to-end segmentation and security in hybrid-cloud environments. Enterprises can achieve comprehensive segmentation, ensuring isolation, secure access, and compliance. The strategies and examples provided demonstrate how to implement and manage segmentation across hybrid environments, catering to diverse requirements and enhancing overall network security. Additional Resources More features and guidance are provided in the comprehensive guide below, where showing exactly how you can use the power and flexibility of F5 Distributed Cloud and Cloud Connect to deliver a Network-centric approach with a firewall and an App-centric approach with a load balancer. Create and manage segmented networks in your own cloud and on-prem environments, and achieve the following benefits: Ability to isolate environments within AWS Ability to extend segmentation to on-prem environments Ability to connect external partners or customers to a specific segment Use Enhanced Firewall Policies to limit access and reduce the blast radius Enhance the compliance and regulatory requirements by isolating sensitive data and systems Visualize and monitor the traffic flows and policies across segments and network domains Workflow Guide - Secure Network Fabric (Multi-Cloud Networking) YouTube: Using network segmentation for hybrid-cloud and extranet with F5 Distributed Cloud Services DevCentral: Secure Multicloud Networking Article Series GitHub: S-MCN Use-case Playbooks (Console, Automation) for F5 Distributed Cloud Customers F5.com: Product Information Product Documentation Network Segmentation Cloud Connect Network Segment Connectors App Security App Networking CE Site Management
Dave_Potter
Jul 23, 2024 Place Technical Articles
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Site-to-Site Connectivity in F5 Distributed Cloud Network Connect – Reference Architecture
Purpose This guide describes the reference architecture for deploying F5 Distributed Cloud’s (XC) Multicloud Network Connect service to interconnect their workload across private connectivity or the internet. It enumerates the options available to an F5 Distributed Cloud user to configure site-to-site connectivity using F5 XC Customer Edges (CEs) and explains them in detail to help the user make informed decisions to choose the correct topology for their use case. Audience This guide is for technical readers, including network admins and architects who want to understand how the Multicloud Network Connect service works and what network topology they must use to interconnect their workloads across data centers, branches, and public clouds. This guide assumes the reader is familiar with networking concepts like routing, default gateway configurations, IPSec and SSL encryption, and private connectivity solutions provided by public clouds like AWS Direct Connect and Azure Express Route. Introduction Ensuring workload reachability across data centers, branches, and/or public cloud can be challenging and operationally complex if done in the traditional way. The network teams must design, configure, and maintain multiple networking and security equipment and need expertise across many vendor solutions that provide functionality like NAT, SD-WAN, VPN, firewalls, access control lists (ACLs), etc. This gets even more nuanced while connecting two networks that have overlapping IP address CIDRs which is often in the case of hybrid cloud deployments and during mergers and acquisitions. F5 XC Multicloud Network Connect provides a simple way to configure these interconnections and manage access and security policies across multiple heterogeneous environments, from a single console. It abstracts the complexities by taking the user intent and automating the underlying networking and security while providing the flexibility to choose to connect over a private network or the public internet. Customer Edge as a Gateway To provide site-to-site reachability and ensure enforcement of the security policies, traffic must flow through the CE site. For this, the CE’s Site Local Inside (SLI) IP address must be used as the default gateway or as the next hop to reach the networks on other sites. Figure: Using CE as the gateway Physical vs. Logical Connectivity Two or more CE sites can be physically connected in multiple ways. But this does not automatically allow networks on different sites to be L3 routable to each other by default. For this, the user must associate networks with segments. The physical connection dictates the path the packets will take while going from one site to the other, and the logical connection connects the VLANs (on-prem) and the VPCs/VNETs (in the public cloud) using network overlay and provides segmentation. Note: Multicloud Network Connect provides Layer 3 connectivity between networks. Configuring L3 connectivity is not required to have app-to-app connectivity across the sites. This is done using the distributed load balancer feature under App Connect. Physical Transit Options Over F5 Global Network Backbone A CE site is always connected to the two nearest Regional Edges (REs) for redundancy, using IPSec or SSL tunnels. The REs across different regions are connected via a global, private F5 backbone network. F5’s global network backbone provides high-speed, private transit across regions where Regional Edges are located. Users can use the CE-RE tunnels over the internet to securely connect to this backbone locally and leverage the private connectivity to connect across regions. Figure: Default CE-CE connectivity over REs and F5 network backbone Pros: No need to manage underlay networking if using CE-RE tunnels over the internet. High-speed private transit between geographically distant regions, at no extra cost. End-to-end encryption of traffic between sites. Option to have end-to-end private connectivity Cons: Throughput is limited to the bandwidth of the two tunnels per site. When To Use: The easiest way to connect when private connectivity is not available between data centers or to the cloud VPCs in the case of hybrid cloud. IPSec/SSL tunnels over the internet are acceptable, but you do not want to manage multiple VPN tunnels or SD-WAN devices. Connecting geographically distant sites and you need better end-to-end latency and reliability than going over the internet. Direct Site-to-Site Over Internet If security regulations prevent the use of F5’s private backbone network, users can connect the CE sites directly to each other using IPSec tunnels (SSL encryption is not supported in this case). This is done using the Site Mesh Group (SMG) feature. Note: Even when the CEs are a part of Site Mesh Group, they will still connect to the REs using encrypted tunnels as this is required for control plane connectivity. When the sites are in an SMG, the data path traffic flows through the CE-CE tunnels as the preferred path. If this link fails, as a backup, the traffic gets routed to the REs and over the F5 network backbone to the other site. The number of tunnels on each link between two CE sites depends on the number of control nodes they have. Two single-node sites are connected using only one tunnel. If any one of these sites has three control nodes, it forms three tunnels to the other site. Figure: Number of tunnels between sites in a SMG Pros: Sites are directly connected, so the data path is not dependent on RE. Easy connectivity over the internet Traffic is always encrypted in transit Eliminates the need to manually configure cross-site VPNs or SD-WAN. Cons: Encryption and decryption require more CPU resources on CE nodes as performance requirements increase. Note: L3 Mode Enhanced Performance can be enabled on the sites to get more performance from available CPU and memory resources, but this must be enabled when the site is used only for L3 connectivity as it reduces the resources available for L7 features. Direct Site-to-Site Over Customer’s Network Backbone The CE-CE tunnels can also be configured to be connected over a private network if end-to-end private connectivity is required. Customer can leverage their existing private connectivity between data centers provisioned using private NaaS providers like Equinix. The sites can either be connected directly using SMG where the connections are encrypted or using the DC Cluster Group (DCG) feature, which connects the sites using IP-in-IP tunnels (no encryption). The number of tunnels on each link between two CE sites depends on the number of control nodes they have. Two single-node sites are connected using only one tunnel. If any one of these sites has three control nodes, it forms three tunnels to the other site. A DCG will give better performance, while an SMG is more secure. Unlike SMG, DCG does not fall back to sending RE-CE tunnels if private connectivity fails. Pros: Data path confined within the customer’s private perimeter. Sites are directly connected, so the data path is not dependent on RE. Option to choose encrypted or unencrypted transit. Simplifies the ACLs on the physical network and allows users to manage segmentation using the F5 XC console. Cons: Customer needs to manage the private connectivity across data centers or from the data center to the public cloud. Direct Site-to-Site Connectivity Topologies For direct site-to-site connectivity, sites can be grouped into Site Mesh Group (SMG) or DC Cluster Group (DCG). These allow sites to connect either in Full Mesh or Hub-Spoke topologies as described below: Full Mesh Site Mesh Group All sites that are part of a full-mesh SMG are connected to every other site using IPSec tunnels, forming a full-mesh topology. Figure: Sites in full mesh Site Mesh Group When To Use: In Hybrid cloud use cases. When all sites have equal functionality (e.g. connecting workloads across data centers). High fault tolerance is required for site-to-site connectivity (not dependent on any one site for transit). Hub-Spoke Site Mesh Group This mode allows the sites to be grouped into a hub SMG and a spoke SMG. The sites within the hub SMG are connected using full mesh topology. The sites within the spoke SMG are connected to the sites in hub SMG only and not to other sites in the spoke SMG. Figure: Sites in Hub-Spoke Site Mesh Group Some characteristics of Hub-Spoke SMG: The hub can have multiple sites for redundancy, but it usually has one site in most customer use cases. A hub site can be a spoke site for a different Hub-Spoke SMG. A CE site can be a spoke for multiple hubs. When To Use: For data center/cloud to edge/branch connectivity use cases. Full Mesh DC Cluster Group DC Cluster Group only supports full mesh topology. Every site in a DCG is connected to every other site using IP-in-IP tunnels. Traffic is not encrypted in transit, but DCG is only supported when sites can be connected over a private network. Figure: Sites in DC Cluster Group When To Use: Connecting VLANs on a data center to VLANs on other data centers or to public cloud VPCs/VNETs, when there is private connectivity between them. When the security regulations allow unencrypted traffic over the private transit. Offline Survivability CE Sites require control plane connectivity to the REs and Global Controller (GC) to exchange routes, renew certificates, and decrypt blindfolded secrets. To enable business continuity during an upstream outage, the Offline Survivability feature can be enabled on all sites in a Full Mesh SMG or DCG. The feature is not supported for Hub-Spoke SMG. With this feature enabled the sites can continue normal operations for 7 days without connecting to the REs and the GC. With the offline survivability feature enabled on a CE site, the local control plane becomes the certificate authority in case of connectivity loss. The decrypted secrets and certificates are cached locally on the CE. So, this feature is not turned on by default to allow the user to decide if enabling it aligns with the security regulations of the company. Logical Connectivity Once the physical transit is configured and the connection topology is chosen the workloads on the networks across the sites can be connected using segments or the applications on one site can be delivered to any other site by configuring a distributed load balancer. Connect Networks - Segmentation Users can create segments and add data center VLANs or public cloud VPCs/VNETs to them. All such networks added to a segment become part of a common routing domain and all workloads on these networks can reach each other using the CE sites as gateways. Users must ensure the networks added to a segment do not overlap. Segments are isolated layer 3 domains. So, workloads on one segment cannot access workloads from other segments by default. However, users can configure Segment Connectors to allow traffic from one segment to another. Figure: Segmentation Connect Applications - Distributed Load Balancing Instead of allowing the workloads to route directly to one another, the user can configure a distributed load balancer to publish a service from one site to other sites. This is done by adding the service endpoints to an origin pool of a load balancer object and advertising it using a custom VIP to another site or multiple sites. This allows the client to connect to the service as a local resource. Using Distributed Load Balancing, an LB admin can configure policies to expose the required API of the application only to the required sites. This reduces the attack surface and increases app security. Figure: Distributed Load Balancing E.g. in the figure above, the on-prem database is advertised to client apps on AWS and Azure which can access the DB using their local VIP, and the on-prem application is advertised to the client on Azure only. Decision Flow to Choose Physical Connectivity Options Once you understand the various physical and logical connectivity options, the below chart can help you to make an informed decision based on the connectivity requirements, infrastructure/platform available, and security restrictions. Once the connectivity is decided, you can choose to connect the network or only publish apps to sites where required based on the application requirements. Related Articles F5XC Site Site Mesh Group DC Cluster Group Segmentation Distributed Load Balancer
bhushanpai
Jul 09, 2024 Place Technical Articles
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The Power of &: F5 Hybrid DNS solution
While some organizations prioritize the advantages of a SaaS solution like scalability, others value the benefits of an on-premises solution, such as data control and migration flexibility. This is why having the option to deploy a hybrid model can be beneficial, not just for redundancy, but also for allowing organizations to blend the best of both worlds. Understanding the Architecture’s components F5 BIG-IP DNS - (formerly BIG-IP GTM) is a well-known on-premise solution for delivering high-performance DNS services such as DNSExpress and DNS Caching. It is also recognized for offering intelligent DNS responses that are based on various factors such as LDNS’ Geolocation (GSLB) and health status of applications. F5 Distributed Cloud DNS (F5 XC DNS) – It is F5’s SaaS-based DNS solution which is built on a global data plane, ensuring automatic scalability to meet high-volume demand. Additionally, it also provides GSLB and security such as DNS DoS protection. On the diagram above, BIG-IP DNS will be the hidden primary DNS, acting as the source of truth for DNS records. This setup ensures centralized control and adds an extra layer of security by reducing exposure to potential attacks. F5XC DNS will function as the secondary DNS server, receiving DNS records from BIG-IP via Zone Transfer. It will be responsible for handling public DNS queries and providing domain name resolution services to clients. In the first part of this article, we will show you how to set up and configure BIG-IP DNS as the hidden primary and F5XC DNS as the authoritative secondary DNS server. For some, this setup is sufficient for their requirements, but for others, there may be additional requirements to consider in this hybrid design. In the later part of this article, we will demonstrate how we can address these challenges by leveraging F5's platform features and capabilities! Steps on Implementing F5 Hybrid DNS Solution Step 1: Configure BIG-IP DNS First, we need to configure BIG-IP DNS to be able to perform a zone transfer to F5XC DNS. For more details on the configuration, you can check this link: https://community.f5.com/kb/technicalarticles/configuring-big-ip-for-zone-transfer-and-dnssec/330359 Step 2: Configure F5XC DNS Now after you've configured BIG-IP DNS, we need to configure F5 XC DNS to be a secondary DNS server. For more details, check the steps below: Log into XC Console, select DNS Management option, click Add Zone. In Domain Name field, enter the domain/subdomain. In our example, it will be f5sg.com Zone Type: Secondary DNS Configuration Under the Secondary DNS Configuration field, click Configure On the DNS primary server IP field, enter the public IP address of the Primary DNS. In our example it will be the Public IP of BIG-IP DNS. On TSIG key, enter the name we used to generate TSIG earlier in BIG-IP. In our example, used example. On the TSIG Key algorithm field and select an algorithm from the drop-down. Select hmac-sha256. Click Configure in the TSIG key value in base 64 format section, On the Secret Type field, select Clear Secret and paste the secret in the Secret field. Use the same secret we generated earlier in BIG-IP DNS. Click Apply. You should see the DNS records transferred from BIG-IP DNS to F5XC DNS Step 3: Configure Domain Registrar In this example, the domain registrar I'm using is Namecheap. I'll configure it so that the authoritative name server for the domain f5sg.com is set to F5XC (ns1.f5clouddns.com and ns2.f5clouddns.com). The steps will vary depending on which domain registrar you are using. Refer to the documentation of your registrar. See the screenshots below for how I configured it in Namecheap. F5 XC DNS should now be able to answer DNS queries since it is set to be the authoritative DNS. Now, let's do some testing! On my local machine, I will perform a dig on the f5sg.com domain. See below: You can see that on the dig result, the NS for f5sg.com is set to ns1.f5clouddns.com & ns2.f5clouddns.com! I can also resolve sales.f5sg.com! We have successfully implemented BIG-IP as Hidden Primary and F5XC as Authoritative Secondary DNS! Challenges and Considerations Now let's discuss the additional requirements or challenges that we might encounter with this hybrid setup solution: Security: We need to comply with security compliance. Nowadays, there are laws requiring the implementation of DNSSEC (DNS Security Extensions). We need to consider this in the design and implement it without adding complexity. Resiliency: Although F5XC DNS Infrastructure is built to be resilient, we still want a backup plan to failover to the BIG-IP Primary DNS in case of unforeseen events. This process will be manual, as we need to change the NS records at the registrar to promote the hidden BIG-IP Primary DNS as the authoritative NS for the domain once F5XC is unavailable. Synchronization: BIG-IP will not be able to synchronize the GSLB functionality with F5XC because Wide-IP records are non-standard and cannot be transferred as part of zone transfers. Solution to Challenges Now comes the fun part: tackling the challenges we’ve laid out! Fortunately, F5 Distributed Cloud is an API-first platform that enables us to automate configuration. At the same time, we have the power of the BIG-IP platform, where you can run custom scripts that will enable us to integrate it with F5XC through API. Solution to Challenge #1: This is easy. DNSSEC records like RRSIG, DNSKEY, DS, NSEC, and NSEC3 are standardized and can be synchronized as part of a zone transfer. Since BIG-IP DNS is our primary DNS and supports DNSSEC, we can enable it. The records will synchronize to F5XC DNS and still respond with signed records, maintaining the integrity and security of our DNS infrastructure. How do you enable it? Check the last part of the technical article below: https://community.f5.com/kb/technicalarticles/configuring-big-ip-for-zone-transfer-and-dnssec/330359 Solution to Challenge #2: We need to automate failover! But when automating tasks, you need two things: a trigger and an action. In our scenario, our trigger should be the availability of F5XC DNS to resolve DNS queries, and the action should be to change our nameserver to BIG-IP on the domain registrar. If you can create and run a script in BIG-IP, it means you can continuously monitor the health of F5XC DNS, allowing us to determine the trigger. But what about the action to change the domain name server records in the registrar? It's easy—check if it can be configured via API, then the problem is solved! Let's explore using Namecheap as our registrar for this example. We will use the BIG-IP EAV (external) monitor to run the script. If you're unfamiliar with the BIG-IP external monitor and its capabilities, check this out → https://my.f5.com/manage/s/article/K71282813 A dummy pool configured with an external monitor will run at intervals. The attached script is designed to monitor F5XC and check if it can resolve DNS queries. If it cannot, the script will trigger an API call to Namecheap (our domain registrar) to change the nameservers back to BIG-IP DNS. Simultaneously, the script will update the domain's NS records from F5XC to BIG-IP. Step 1: Create an external monitor using the custom script. Refer to article K71282813 how to create the external monitor. See the codeshare link for the sample custom script I used: Namecheap and BIG-IP Integration via API | DevCentral Step 2: Create a dummy pool and attach the custom external monitor Let's do some tests! See the results in the later part of this article. Solution to Challenge #3: We can't use Zone Transfer to synchronize GSLB configurations? No problem! Instead, we'll harness the power of APIs. We can run a custom script in BIG-IP to convert Wide-IP configurations into F5XC DNSLB records via API. Let's see below how we can do this. On BIG-IP DNS, configure the zone records for the domain f5sg.com to delegate the subdomains needed for GSLB. For example, we need to perform GSLB for www.f5sg.com, we will configure the zone like below: www.f5sg.com CNAME www.gslb.f5sg.com gslb.f5sg.com NS ns1.f5clouddns.com On BIG-IP we will create Wide-IP configuration for www.gslb.f5sg.com which should hold the A records. These Wide-IP configurations can be converted by a script to F5XC DNSLB configurations. Check the sample script on this codeshare link: BIG-IP Wide-IP to F5XC DNSLB converter | DevCentral Testing and Result Challenge #2: Failover Testing To simulate the scenario in which F5XC is unable to respond to DNS queries, we designed the script to execute a dig command to F5XC for a TXT record. If F5XC responds with "RESPONSE-OK," no further action is needed. However, if it fails to respond correctly or does not respond at all, the script will trigger a failover action. Scenario 1: When F5XC responds to DNS queries (TXT record value is RESPONSE-OK) Namecheap dashboard shows F5XC nameservers BIG-IP DNS zone records shows F5XC nameservers F5XC zone records shows F5XC nameservers Result when performing dig to resolve sales.f5sg.com -> it shows that F5XC nameservers are Authoritative Scenario: When F5XC doesn't respond to DNS queries (TXT record value is RESPONSE-NOT-OK) We changed the TXT record value to 'RESPONSE-NOT-OK,' which should mark the monitor as down. The dummy pool went down, which means the script inside the monitor detected that the dig result was not what it expected. You can see from the zone records below that the NS records have now changed to GTM (gtm1.f5sg.com and gtm2.f5sg.com) When we check our domain registrar, Namecheap, we can see that the nameservers are now automatically set to BIG-IP GTMs. When I issue a dig command from my workstation, I can see that the nameserver responding to my query is gtm1.f5sg.com Online DNS tools (like MXToolbox) also report that gtm1.f5sg.com is the authoritative NS that responds to the DNS queries for sales.f5sg.com, which resolves to 2.2.2.2 We have now solved one of the challenges by implementing a backup failover plan using custom monitors and automations, made possible by the power of BIG-IP and APIs! Challenge #3: Synchronization Testing Using this script, we can convert and synchronize the BIG-IP Wide-IP configuration to its F5XC equivalent configuration Note: The sample script is limited to handling a Wide-IP with a single GTM pool. Inside the pool is where you will define the IP addresses that you want to load balance. The pool load balancing method is also limited to Round Robin, Ratio, Static Persist, and Global Availability. The script is designed to run at intervals. There are several ways to execute it: you can use external monitors (as we did earlier) or utilize a cronjob, etc. For testing and simplicity, I will use a cronjob set to run every 10 minutes. Let's begin creating our GSLB configuration. If you've configured BIG-IP GTM/DNS before, one of the first objects you need to create is a GTM server. I've configured two Generic Servers representing the application in two different Data Centers. Next is we create a GTM Pool which we will associate the Virtual Server inside the GTM server we created earlier. (i.e. I'm assigning 1.1.1.1 and 2.2.2.2 as the members of the pool) Lastly, we will create the Wide-IP record and attach the GTM Pool we created earlier After this, the script should get triggered and convert this BIG-IP DNS Wide-IP configuration into F5XC DNS configuration. We should see that a new Primary Zone will be created in F5XC (gslb.f5sg.com) When you view the resource records, we should see a DNSLB record which has the record name equivalent to the subdomain of the wide-IP record. (BIG-IP DNS Wide-IP record is www.glsb.f5sg.com, In F5XC DNS zone gslb.f5sg.com, the record name is www and pointing to DNSLB object) The load balancing rules should have the DNSLB pool (pool-www) which is the equivalent of the GTM Pool (pool_www) configured in BIG-IP DNS The DNSLB pool members will include the same IP addresses we defined as GTM Pool members in BIG-IP DNS. There are four load balancing methods available in F5XC, and there is an equivalent BIG-IP DNS load balancing method. The script was created to match this methods but if you configure the BIG-IP DNS pool load balancing method to something other than these four, it will default to Round Robin. BIG-IP DNS F5XC DNS Round Robin Round-Robin Ratio Ratio-Member Static Persist Static-Persist Global Availability Priority Based on the results above, we have successfully converted and synchronize BIG-IP DNS Wide-IP configuration into F5XC DNSLB records! Conclusion We have resolved DNS challenges using the power and integration of F5 solutions! By utilizing both BIG-IP and F5XC platforms, which can sign and serve DNSSEC records, we can seamlessly implement DNSSEC in a hybrid setup without complexity. Furthermore, our scalable F5XC Cloud DNS will shield you from myriad DNS DoS attacks, which are continually evolving, especially with the rise of AI. In terms of DNS resiliency, with the power of our API-first platforms and automation, we can create a DNS hybrid solution capable of automatically failing over from Cloud DNS to on-prem DNS. Lastly, we can synchronize the configurations of both platforms using standards like Zone Transfer and APIs. This capability allows us to convert and synchronize GSLB configurations between our on-prem DNS and Cloud DNS, making administration easier, and establishing a single source of truth.
michelangelodorado
Jun 19, 2024 Place Technical Articles
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All I want for Christmas is a hybrid cloud
********** Dear Santa, I hope you and the reindeers are as excited as I am about Christmas! Make sure you get plenty of rest between now and then, so you can deliver all those lovely presents all over the world on Christmas Eve. I’ve thought a lot about what I want for Christmas, and have finally made a decision. This Christmas all I want is a hybrid cloud. I’ve heard so much about them, and lots of people either already have them or are getting them soon, and I want to join the fun! I really want a hybrid cloud because of the benefits it brings: increased scalability, improved security, better resource allocation, better availability and resiliency, and it’s much more cost-effective. And who wouldn’t want that! I hope I wake up on Christmas morning with a lovely new hybrid cloud infrastructure! I just hope you can fit it on your sleigh. ********** I think Santa’s got some work to do to get me a hybrid cloud infrastructure for Christmas! But the point made above about lots of people going down the hybrid route is true: the recent Right Scale 2015 State of the Cloud Report revealed that 82% of businesses have a hybrid cloud strategy in place. That figure is up from 74% the year before. That’s because businesses are attracted by the cost savings it can offer, as well as the other benefits mentioned in my letter to Santa above. But they also don’t want to trade-off control in order to realise these benefits; they want to maintain the same visibility, security and control of a traditional infrastructure. The key to a good hybrid environment is the ability to unify all the hardware, software and managed services resources that make up both on-premises and cloud environments. This combination of physical and virtual resources makes it easier to transition workloads to the cloud as and when needed. Now, cloud is regularly considered a security risk for organisations. And that’s fair, to some extent: cloud computing and increased mobility has meant enterprise perimeters have changed; applications are now accessed from a variety of environments and from different devices (both corporate and personal) and locations. But having a hybrid environment means security processes and protocols that apply on-premises can be extended to the cloud, protecting your users - and your data - wherever they are. This approach not only secures cloud-based, web-based, and virtual applications but also ensures high availability and reliable access. Hybrid clouds are the best of both worlds, all the benefits of cloud computing without sacrificing security, flexibility, or cost savings. However, organisations must consider what it takes to ensure applications and services there are treated the same way as on-premises infrastructure, so they can embrace a hybrid cloud with the same confidence as they approach their own data centre. Thanks Santa, and have a great Christmas folks!
Diggers_22686
Dec 22, 2015 Place Technical Articles
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Bringing Consistency to Hybrid Cloud
The term Hybrid Cloud is at the same stage that ‘Cloud’ was a few years ago: Used everywhere but generally misrepresented. What most people have is basically a mix of on-premises, cloud based and SaaS applications, often with only limited interaction between them. And that’s OK. It represents a stage on our journey to a more integrated, flexible service delivery architecture where, eventually, policy will probably automatically determine where an application workload runs. What we need to know is what path we need to take to get from here to there with the minimum of wasted effort and dead ends. One of the things that seems necessary to me is having ubiquitous and consistent application services in all your locations. What are application services? They are all the things that are neither the application or the base infrastructure. Firewalls, application delivery controllers, protocol gateways: these are all services that help to make an application more salable, secure or available. To really create a flexible environment, we need to know that an application can be deployed in our chosen location and that it will have the services it needs to work. From an operational perspective we want consistency and homogenous management across our various infrastructures, a common set of tools and processes. One way to do this is to choose vendors that can supply services wherever we are going to need them, at the scale we require. This, I think is a significant advantage of F5. Whether you need a high capacity Viprion for a high performance application running on dedicated hardware, or a farm of lab-edition BIG-IP’s running in AWS for your test and development, and anything in between, we will be there with you. Providing our range of security, availability and optimization services wherever your applications need them, and helping you turn hybrid cloud into reality.
Robert_Haynes
Dec 11, 2015 Place Technical Articles
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Cloud bursting, the hybrid cloud, and why cloud-agnostic load balancers matter
Cloud Bursting and the Hybrid Cloud When researching cloud bursting, there are many directions Google may take you. Perhaps you come across services for airplanes that attempt to turn cloudy wedding days into memorable events. Perhaps you'd rather opt for a service that helps your IT organization avoid rainy days. Enter cloud bursting ... yes, the one involving computers and networks instead of airplanes. Cloud bursting is a term that has been around in the tech realm for quite a few years. It, in essence, is the ability to allocate resources across various public and private clouds as an organization's needs change. These needs could be economic drivers such as Cloud 2 having lower cost than Cloud 1, or perhaps capacity drivers where additional resources are needed during business hours to handle traffic. For intelligent applications, other interesting things are possible with cloud bursting where, for example, demand in a geographical region suddenly needs capacity that is not local to the primary, private cloud. Here, one can spin up resources to locally serve the demand and provide a better user experience. Nathan Pearce summarizes some of the aspects of cloud bursting in this minute long video, which is a great resource to remind oneself of some of the nuances of this architecture. While Cloud Bursting is a term that is generally accepted by the industry as an "on-demand capacity burst," Lori MacVittie points out that this architectural solution eventually leads to a Hybrid Cloud where multiple compute centers are employed to serve demand among both private-based resources are and public-based resources, or clouds, all the time. The primary driver for this: practically speaking, there are limitations around how fast data that is critical to one's application (think databases, for example) can be replicated across the internet to different data centers. Thus, the promises of "on-demand" cloud bursting scenarios may be short lived, eventually leaning in favor of multiple "always-on compute capacity centers" as loads increase for a given application. In any case, it is important to understand that that multiple locations, across multiple clouds will ultimately be serving application content in the not-too-distant future. An example hybrid cloud architecture where services are deployed across multiple clouds. The "application stack" remains the same, using LineRate in each cloud to balance the local application, while a BIG-IP Local Traffic Manager balances application requests across all of clouds. Advantages of cloud-agnostic Load Balancing As one might conclude from the Cloud Bursting and Hybrid Cloud discussion above, having multiple clouds running an application creates a need for user requests to be distributed among the resources and for automated systems to be able to control application access and flow. In order to provide the best control over how one's application behaves, it is optimal to use a load balancer to serve requests. No DNS or network routing changes need to be made and clients continue using the application as they always did as resources come online or go offline; many times, too, these load balancers offer advanced functionality alongside the load balancing service that provide additional value to the application. Having a load balancer that operates the same way no matter where it is deployed becomes important when resources are distributed among many locations. Understanding expectations around configuration, management, reporting, and behavior of a system limits issues for application deployments and discrepancies between how one platform behaves versus another. With a load balancer like F5's LineRate product line, anyone can programmatically manage the servers providing an application to users. Leveraging this programatic control, application providers have an easy way spin up and down capacity in any arbitrary cloud, retain a familiar yet powerful feature-set for their load balancer, ultimately redistribute resources for an application, and provide a seamless experience back to the user. No matter where the load balancer deployment is, LineRate can work hand-in-hand with any web service provider, whether considered a cloud or not. Your data, and perhaps more importantly cost-centers, are no longer locked down to one vendor or one location. With the right application logic paired with LineRate Precision's scripting engine, an application can dynamically react to take advantage of market pricing or general capacity needs. Consider the following scenarios where cloud-agnostic load balancer have advantages over vendor-specific ones: Economic Drivers Time-dependent instance pricing Spot instances with much lower cost becoming available at night Example: my startup's billing system can take advantage in better pricing per unit of work in the public cloud at night versus the private datacenter Multiple vendor instance pricing Cloud 2 just dropped their high-memory instance pricing lower than Cloud 1's Example: Useful for your workload during normal business hours; My application's primary workload is migrated to Cloud 2 with a simple config change Competition Having multiple cloud deployments simultaneously increases competition, and thus your organization's negotiated pricing contracts become more attractive over time Computational Drivers Traffic Spikes Someone in marketing just tweeted about our new product. All of a sudden, the web servers that traditionally handled all the loads thrown at them just fine are getting slashdotted by people all around North America placing orders. Instead of having humans react to the load and spin up new instances to handle the load - or even worse: doing nothing - your LineRate system and application worked hand-in-hand to spin up a few instances in Microsoft Azure's Texas location and a few more in Amazon's Virginia region. This helps you distribute requests from geographically diverse locations: your existing datacenter in Oregon, the central US Microsoft Cloud, and the east-coast based Amazon Cloud. Orders continue to pour in without any system downtime, or worse: lost customers. Compute Orchestration A mission-critical application in your organization's private cloud unexpectedly needs extra computer power, but needs to stay internal for compliance reasons. Fortunately, your application can spin up public cloud instances and migrate traffic out of the private datacenter without affecting any users or data integrity. Your LineRate instance reaches out to Amazon to boot instances and migrate important data. More importantly, application developers and system administrators don't even realize the application has migrated since everything behaves exactly the same in the cloud location. Once the cloud systems boot, alerts are made to F5's LTM and LineRate instances that migrate traffic to the new servers, allowing the mission-critical app to compute away. You just saved the day! The benefit to having a cloud-agnostic load balancing solution for connecting users with an organization's applications not only provides a unified user experience, but provides powerful, unified way of controlling the application for its administrators as well. If all of a sudden an application needs to be moved from, say, a private datacenter with a 100 Mbps connection to a public cloud with a GigE connection, this can easily be done without having to relearn a new load balancing solution. F5's LineRate product is available for bare-metal deployments on x86 hardware, virtual machine deployments, and has recently deployed an Amazon Machine Image (AMI). All of these deployment types leverage the same familiar, powerful tools that LineRate offers: lightweight and scalable load balancing, modern management through its intuitive GUI or the industry-standard CLI, and automated control via its comprehensive REST API. LineRate Point Load Balancer provides hardened, enterprise-grade load balancing and availability services whereas LineRate Precision Load Balancer adds powerful Node.js programmability, enabling developers and DevOps teams to leverage thousands of Node.js modules to easily create custom controls for application network traffic. Learn about some of LineRate's advanced scripting and functionality here, or try it out for free to see if LineRate is the right cloud-agnostic load balancing solution for your organization.
Andrew_Ragone_2
May 15, 2015 Place Technical Articles
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The Three Reasons Hybrid Clouds Will Dominate
In the short term, hybrid cloud is going to be the cloud computing model of choice. Amidst all the disconnect at CloudConnect regarding standards and where “cloud” is going was an undercurrent of adoption of what most have come to refer to as a “hybrid cloud computing” model. This model essentially “extends” the data center into “the cloud” and takes advantage of less expensive compute resources on-demand. What’s interesting is that the use of this cheaper compute is the granularity of on-demand. The time interval for which resources are utilized is measured more in project timelines than in minutes or even hours. Organizations need additional compute for lab and quality assurance efforts, for certification testing, for production applications for which budget is limited. These are not snap decisions but rather methodically planned steps along the project management lifecycle. It is on-demand in the sense that it’s “when the organization needs it”, and in the sense that it’s certainly faster than the traditional compute resource acquisition process, which can take weeks or even months. Also mentioned more than once by multiple panelists and speakers was the notion of separating workload such that corporate data remains in the local data center while presentation layers and GUIs move into the cloud computing environment for optimal use of available compute resources. This model works well and addresses issues with data security and privacy, a constant top concern in surveys and polls regarding inhibitors of cloud computing. It’s not just the talk at the conference that makes such a conclusion probabilistic. An Evans Data developer survey last year indicated that more than 60 percent of developers would be focusing on hybrid cloud computing in 2010. Results of the Evans Data Cloud Development Survey, released Jan. 12, show that 61 percent of the more than 400 developers polled said some portion of their organizations' IT resources "will move to the public cloud within the next year," Evans Data said. "However, over 87 percent [of the developers] say half or less then half of their resources will move ... As a result, the hybrid cloud is set to dominate the coming IT landscape." There are three reasons why this model will become the de facto standard strategy for leveraging cloud computing, at least in the short term and probably for longer than some pundits (and providers) hope.
Lori_MacVittie
Feb 02, 2015 Place Technical Articles
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Don’t believe a word I say about Cloud – listen to my customer!
Everbridge is a critical communications platform provider - that’s what it says on their website. What their website won’t tell you is that the Everbridge IT team are a collective of experts when it comes to consuming cloud-based services, and they’ve put together a solid strategy that matches the high expectations of their customers without introducing risk to their business. Critical Communications Platform what? During critical events, Everbridge removes global, regional, and technology barriers, enabling organizations to quickly communicate and collaborate within the right context. They provide the most secure, comprehensive, and resilient platform on the market to improve critical communications and increase situational intelligence for diverse industries, including corporations, state and local government, healthcare, financial services, and higher education. The services provided by Everbridge save lives, and as you’ve likely worked out for yourself they do not have the luxury of backing out of deployments, or rescheduling the migration of a service to a cloud platform. Their business requires them to react, quickly and reliably, providing a consistent platform where ever required, anywhere in the world. How do you do it? Everbridge deliver their applications and services through a common set of application delivery policies across all of their chosen platforms: hardware and software, running on both private and public infrastructure. By using F5 for their application delivery, security and DNS services Everbridge is able to deploy predefined policies anywhere they workload is needed, anywhere in the world. This model eliminates the requirement of them to learn and manage an array of cloud provider services, and avoid adding unnecessary complexity deployment and administrative complexity, for their application availability, security and performance requirements. Anyway, don’t take my word for it, here’s a short video from Everbridge explaining how to reduce the associated risks with and to simplify the journey to cloud.
Nathan_Pearce_1
Jan 16, 2015 Place Technical Articles
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Highly Available Hybrid
Achieving the ultimate ‘Five Nines’ of web site availability (around 5 minutes of downtime a year) has been a goal of many organizations since the beginning of the internet era. There are several ways to accomplish this but essentially a few principles apply. Eliminate single points of failure by adding redundancy so if one component fails, the entire system still works. Have reliable crossover to the duplicate systems so they are ready when needed. And have the ability to detect failures as they occur so proper action can be taken. If the first two are in place, hopefully you never see a failure but maintenance is a must. BIG-IP high availability (HA) functionality, such as connection mirroring, configuration synchronization, and network failover, allow core system services to be available for BIG-IP to manage in the event that a particular application instance becomes unavailable. Organizations can synchronize BIG-IP configurations across data centers to ensure the most up to date policy is being enforced throughout the entire infrastructure. In addition, BIG-IP itself can be deployed as a redundant system either in active/standby or active/active mode. Web applications come in all shapes and sizes from static to dynamic, from simple to complex from specific to general. No matter the size, availability is important to support the customers and the business. The most basic high-availability architecture is the typical 3-tier design. A pair of ADCs in the DMZ terminates the connection; they in turn intelligently distribute the client request to a pool (multiple) of application servers which then query the database servers for the appropriate content. Each tier has redundant servers so in the event of a server outage, the others take the load and the system stays available. This is a tried and true design for most operations and provides resilient application availability within a typical data center. But fault tolerance between two data centers is even more reliable than multiple servers in a single location, simply because that one data center is a single point of failure. A hybrid data center approach allows organizations to not only distribute their applications when it makes sense but can also provide global fault tolerance to the system overall. Depending on how an organization’s disaster recovery infrastructure is designed, this can be an active site, a hot-standby, some leased hosting space, a cloud provider or some other contained compute location. As soon as that server, application, or even location starts to have trouble, organizations can seamlessly maneuver around the issue and continue to deliver their applications. Driven by applications and workloads, a hybrid data center is really a technology strategy of the entire infrastructure mix of on premise and off-premise data compute resources. IT workloads reside in conventional enterprise IT (legacy systems), an on premise private cloud (mission critical apps), at a third-party off-premise location (managed, hosting or cloud provider) or a combination of all three. The various combinations of hybrid data center types can be as diverse as the industries that use them. Enterprises probably already have some level of hybrid, even if it is a mix of owned space plus SaaS. Enterprises typically like to keep sensitive assets in house but have started to migrate workloads to hybrid data centers. Financial industries might have different requirements than retail. Startups might start completely with a cloud based service and then begin to build their own facility if needed. Mobile app developers, particularly games, often use the cloud for development and then bring it in-house once it is released. Enterprises, on the other hand, have (historically) developed in house and then pushed out to a data center when ready. The variants of industries, situations and challenges the hybrid approach can address is vast. Manage services rather than boxes. ps Related Hybrid DDoS Needs Hybrid Defense The Conspecific Hybrid Cloud The future of cloud is hybrid ... and seamless Hybrid–The New Normal Hybrid Architectures Do Not Require Private Cloud Technorati Tags: f5,hybrid,cloud,datacenter,applications,availability,silva Connect with Peter: Connect with F5:
PSilva
Aug 12, 2014 Place Technical Articles
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AI RAG using F5 Distributed Cloud in Red Hat OpenShift AI and NetApp ONTAP Environment","conversation":{"__ref":"Conversation:conversation:339884"},"id":"message:339884","revisionNum":25,"uid":339884,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:421692"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":306},"postTime":"2025-02-24T19:51:18.469-08:00","lastPublishTime":"2025-02-24T19:51:18.469-08:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" Introduction \n Retrieval Augmented Generation (RAG) is a powerful technique that allows Large Language Models (LLMs) to access information beyond their training data. The “R” in RAG refers to the data retrieval process, where the system retrieves relevant information from an external knowledge base based on the input query. Next, the “A” in RAG represents the augmentation of context enrichment, as the system combines the retrieved relevant information and the input query to create a more comprehensive prompt for the LLM. Lastly, the “G” in RAG stands for response generation, where the LLM generates a response with a more contextually accurate output based on the augmented prompt as a result. \n RAG is becoming increasingly popular in enterprise AI applications due to its ability to provide more accurate and contextually relevant responses to a wide range of queries. However, deploying RAG can introduce complexity due to its components being located in different environments. For instance, the datastore or corpus, which is a collection of data, is typically on-premise for enhanced control over data access and management due to data security, governance, and compliance with regulations within the enterprise. Meanwhile, inference services are often deployed in the cloud for their scalability and cost-effectiveness. \n In this article, we will discuss how F5 Distributed Cloud can simplify the complexity and securely connect all RAG components seamlessly for enterprise RAG-enabled AI applications deployments. Specifically, we will focus on Network Connect, App Connect, and Web App & API Protection. We will demonstrate how these F5 Distributed Cloud features can be leveraged to secure RAG in collaboration with Red Hat OpenShift AI and NetApp ONTAP. \n Example Topology \n \n \n F5 Distributed Cloud Network Connect \n F5 Distributed Cloud Network Connect enables seamless and secure network connectivity across hybrid and multicloud environments. By deploying F5 Distributed Cloud Customer Edge (CE) at site, it allows us to easily establish encrypted site-to-site connectivity across on-premises, multi-cloud, and edge environment. \n Jensen Huang, CEO of NVIDIA, has said that \"Nearly half of the files in the world are stored on-prem on NetApp.”. In our example, enterprise data stores are deployed on NetApp ONTAP in a data center in Seattle managed by organization B (Segment-B: s-gorman-production-segment), while RAG services, including embedding Large Language Model (LLM) and vector database, is deployed on-premise on a Red Hat OpenShift cluster in a data center in California managed by Organization A (Segment-A: jy-ocp). By leveraging F5 Distributed Cloud Network Connect, we can quickly and easily establish a secure connection for seamless and efficient data transfer from the enterprise data stores to RAG services between these two segments only: \n \n F5 Distributed Cloud CE can be deployed as a virtual machine (VM) or as a pod on a Red Hat OpenShift cluster. In California, we deploy the CE as a VM using Red Hat OpenShift Virtualization — click here to find out more on Deploying F5 Distributed Cloud Customer Edge in Red Hat OpenShift Virtualization: \n \n Segment-A: jy-ocp on CE in California and Segment-B: s-gorman-production-segment on CE in Seattle: \n \n Simply and securely connect Segment-A: jy-ocp and Segment-B: s-gorman-production-segment only, using Segment Connector: \n \n NetApp ONTAP in Seattle has a LUN named “tbd-RAG”, which serves as the enterprise data store in our demo setup and contains a collection of data. After these two data centers are connected using F5 XC Network Connect, a secure encrypted end-to-end connection is established between them. In our example, “test-ai-tbd” is in the data center in California where it hosts the RAG services, including embedding Large Language Model (LLM) and vector database, and it can now successfully connect to the enterprise data stores on NetApp ONTAP in the data center in Seattle: \n \n F5 Distributed Cloud App Connect \n F5 Distributed Cloud App Connect securely connects and delivers distributed applications and services across hybrid and multicloud environments. By utilizing F5 Distributed Cloud App Connect, we can direct the inference traffic through F5 Distributed Cloud's security layers to safeguard our inference endpoints. \n \n Red Hat OpenShift on Amazon Web Services (ROSA) is a fully managed service that allows users to develop, run, and scale applications in a native AWS environment. We can host our inference service on ROSA so that we can leverage the scalability, cost-effectiveness, and numerous benefits of AWS’s managed infrastructure services. For instance, we can host our inference service on ROSA by deploying Ollama with multiple AI/ML models: \n \n Or, we can enable Model Serving on Red Hat OpenShift AI (RHOAI). Red Hat OpenShift AI (RHOAI) is a flexible and scalable AI/ML platform builds on the capabilities of Red Hat OpenShift that facilitates collaboration among data scientists, engineers, and app developers. This platform allows them to serve, build, train, deploy, test, and monitor AI/ML models and applications either on-premise or in the cloud, fostering efficient innovation within organizations. In our example, we use Red Hat OpenShift AI (RHOAI) Model Serving on ROSA for our inference service: \n \n Once inference service is deployed on ROSA, we can utilize F5 Distributed Cloud to secure our inference endpoint by steering the inference traffic through F5 Distributed Cloud's security layers, which offers an extensive suite of features designed specifically for the security of modern AI/ML inference endpoints. This setup would allow us to scrutinize requests, implement policies for detected threats, and protect sensitive datasets before they reach the inferencing service hosted within ROSA. In our example, we setup a F5 Distributed Cloud HTTP Load Balancer (rhoai-llm-serving.f5-demo.com), and we advertise it to the CE in the datacenter in California only: \n \n We now reach our Red Hat OpenShift AI (RHOAI) inference endpoint through F5 Distributed Cloud: \n \n F5 Distributed Cloud Web App & API Protection \n F5 Distributed Cloud Web App & API Protection provides comprehensive sets of security features, and uniform observability and policy enforcement to protect apps and APIs across hybrid and multicloud environments. We utilize F5 Distributed Cloud App Connect to steer the inference traffic through F5 Distributed Cloud to secure our inference endpoint. In our example, we protect our Red Hat OpenShift AI (RHOAI) inference endpoint by rate-limiting the access, so that we can ensure no single client would exhaust the inference service: \n \n A \"Too Many Requests\" is received in the response when a single client repeatedly requests access to the inference service at a rate higher than the configured threshold: \n \n This is just one of the many security features to protect our inference service. Click here to find out more on Securing Model Serving in Red Hat OpenShift AI (on ROSA) with F5 Distributed Cloud API Security. \n Demonstration \n In a real-world scenario, the front-end application could be hosted on the cloud, or hosted at the edge, or served through F5 Distributed Cloud, offering flexible alternatives for efficient application delivery based on user preferences and specific needs. To illustrate how all the discussed components work seamlessly together, we simplify our example by deploying Open WebUI as the front-end application on the Red Hat OpenShift cluster in the data center in California, which includes RAG services. While a DPU or GPU could be used for improved performance, our setup utilizes a CPU for inferencing tasks. \n We connect our app to our enterprise data stores deployed on NetApp ONTAP in the data center in Seattle using F5 Distributed Cloud Network Connect, where we have a copy of \"Chapter 1. About the Migration Toolkit for Virtualization\" from Red Hat. These documents are processed and saved to the Vector DB: \n \n Our embedding Large Language Model (LLM) is Sentence-Transformers/all-MiniLM-L6-v2, and here is our RAG template: \n \n Instead of connecting to the inference endpoint on Red Hat OpenShift AI (RHOAI) on ROSA directly, we connect to the F5 Distributed Cloud HTTP Load Balancer (rhoai-llm-serving.f5-demo.com) from F5 Distributed Cloud App Connect: \n \n Previously, we asked, \"What is MTV?“ and we never received a response related to Red Hat Migration Toolkit for Virtualization: \n \n Now, let's try asking the same question again with RAG services enabled: \n \n We finally received the response we had anticipated. \n Next, we use F5 Distributed Cloud Web App & API Protection to safeguard our Red Hat OpenShift AI (RHOAI) inference endpoint on ROSA by rate-limiting the access, thus preventing a single client from exhausting the inference service: \n \n As expected, we received \"Too Many Requests\" in the response on our app upon requesting the inference service at a rate greater than the set threshold: \n \n With F5 Distributed Cloud's real-time observability and security analytics from the F5 Distributed Console, we can proactively monitor for potential threats. For example, if necessary, we can block a client from accessing the inference service by adding it to the Blocked Clients List: \n \n As expected, this specific client is now unable to access the inference service: \n \n Summary \n Deploying and securing RAG for enterprise RAG-enabled AI applications in a multi-vendor, hybrid, and multi-cloud environment can present complex challenges. In collaboration with Red Hat OpenShift AI (RHOAI) and NetApp ONTAP, F5 Distributed Cloud provides an effortless solution that secures RAG components seamlessly for enterprise RAG-enabled AI applications. 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Network Segmentation for Hybrid Cloud","conversation":{"__ref":"Conversation:conversation:330876"},"id":"message:330876","revisionNum":13,"uid":330876,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:418292"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":557},"postTime":"2024-06-24T05:00:00.028-07:00","lastPublishTime":"2024-07-23T12:10:47.187-07:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" Introduction \n Enterprises have always had the need to maintain separate development and production environments. Operational efficiency, reduction of blast radius, security and compliance are generally the common objectives behind separating these environments. By dividing networks into smaller, isolated segments, organizations can enhance security, optimize performance, and ensure regulatory compliance. This article demonstrates a practical strategy for implementing network segmentation in modern multicloud environments that also connect on-prem infrastructure. This uses F5 Distributed Cloud (F5 XC) services to connect and secure network segments in cloud environments like Amazon Web Services (AWS) and on-prem datacenters. \n Need for Segmentation \n Network segmentation is critical for managing complex enterprise environments. Traditional methods like Virtual Routing and Forwarding (VRFs) and Multiprotocol Label Switching (MPLS) have long been used to create isolated network segments in on-prem setups. F5 XC ensures segmentation in environments like AWS and it can extend the same segmentation to on-prem environments. These techniques separate traffic, enhance security, and improve network management by preventing unauthorized access and minimizing the attack surface. \n Scenario Overview \n Our scenario depicts an enterprise with three different environments (prod, dev, and shared services) extended between on-prem and cloud. A 3rd party entity requires access to a subset of the enterprise's services. \n This article, covers the following two networking segmentation use-cases: \n \n Hybrid Cloud Transit \n Extranet (servicing external 3 rd party partners/customers) \n \n \n Hybrid Cloud Transit \n Consider an enterprise with three distinct environments: Production (Prod), Development (Dev), and Shared Services. Each environment requires strict isolation to ensure security and performance. Using F5 XC Cloud Connect, we can assign each VPC a network segment effectively isolating the VPC’s. Segments in multiple locations (or VPC’s) can traverse F5 XC to reach distant locations whether in another cloud environment or on-prem. Network segments are isolated by default, for example, our Prod segment cannot access Shared. A segment connector is needed to allow traffic between Prod and Shared. The following diagram shows the VPC segments, ensuring complete \"ships in the night\" isolation between environments. \n In this setup, Prod, Dev, and Shared Services environments operate independently and are completely isolated from one another at the control plane level. This ensures that any issues or attacks in one environment do not affect the others. \n Customer Requirement: Shared Services Access \n Many enterprises deploy common services across their organization to support internal workloads and applications. Some examples include DHCP, DNS, NTP, and NFS, services that need to be accessible to both Prod and Dev environments while keeping Prod and Dev separate from each other. Segment Connectors is a method to allow communication between two isolated segments by leaking the routes between the source and destination segments. \n It is important to note that segment connector can be of type Direct or SNAT. Direct allows bidirectional communication between segments whereas the SNAT option allows unidirectional communication from the source to the destination. \n \n \n Extending Segmentation to On-Premises \n Enterprises already use segmented networks within their on-premises infrastructure. Extending this segmentation to AWS involves creating similar isolated segments in the cloud and establishing secure communication channels. F5 XC allows you to easily extend this segmentation from on-prem to the cloud regardless of the underlay technology. \n \n In this scenario, communication between the on-premises Prod segment and its cloud counterpart is seamless, and the same also applies for the Dev segment. Meanwhile Dev and Prod stay separate ensuring that existing security and isolation is preserved across the hybrid environment. \n Extranet \n In this scenario an external entity (customer/partner) needs access to a few applications within our Prod segment. There are two different ways to enable this access, Network-centric and App-centric. Let’s refer to the external entity as Company B. \n In order to connect Company B we generally need appropriate cloud credentials, but Company B will not share their cloud credentials with us. To solve this problem, F5 XC recommends using AWS STS:AssumeRole functionality whereby Company B creates an AWS IAM Role that trusts F5 XC with the minimum privileges necessary to configure Transit Gateway (TGW) attachments and TGW route table entries to extend access to the F5 XC network or network segments. \n Section 1 – Network-centric Extranet \n Many times, partners & customers need to access a unique subset of your enterprise’s applications. This can be achieved with F5 XC’s dedicated network segments and segment connectors. \n \n With a segment connector for the external and prod network segments, we can give Company B access to the required HTTP service without gaining broader access to other non-Prod segments. \n \n \n Locking Down with Firewall Policies \n We can implement a Zero Trust firewall policy to lock down access from the external segment. By refining these policies, we ensure that third-party consumers can only access the services they are authorized to use. \n \n \n \n Our firewall policy on the CE only allows access from the external segment to the intended application on TCP/80 in Prod. \n [ec2-user@ip-10-150-10-146 ~]$ curl --head 10.1.10.100 \n HTTP/1.1 200 OK \n Server: nginx/1.24.0 (Ubuntu) \n Date: Thu, 30 May 2024 20:50:30 GMT \n Content-Type: text/html \n Content-Length: 615 \n Last-Modified: Wed, 22 May 2024 21:35:11 GMT \n Connection: keep-alive \n ETag: \"664e650f-267\" \n Accept-Ranges: bytes \n \n [ec2-user@ip-10-150-10-146 ~]$ ping -O 10.1.10.100 \n PING 10.1.10.100 (10.1.10.100) 56(84) bytes of data. \n no answer yet for icmp_seq=1 \n no answer yet for icmp_seq=2 \n no answer yet for icmp_seq=3 \n ^C \n --- 10.1.10.100 ping statistics --- \n 4 packets transmitted, 0 received, 100% packet loss, time 3153ms \n \n After applying the new policies, we confirm that the third-party access is restricted to the intended services only, enhancing security and compliance. \n \n This demonstrates how F5 Distributed Cloud services enable networking segmentation across on-prem and cloud environments, with granular control over security policies applied between the segments. \n Section 2 - App-centric Extranet \n In the scenario above, Company B can directly access one or more services in Prod with a segment connector and we’ve locked it down with a firewall policy. For the App-centric method, we’ll only publish the intended services that live in Prod to the external segment. \n \n App-centric connectivity is made possible without a segment connector by using load balancers within App Connect that target the application within the Prod segment and advertises its VIP address to the external segment. The following illustration shows how to configure each component in the load balancer. \n \n \n Visualization of Traffic Flows \n The visualization flow analysis tool in the F5 XC Console shows traffic flows between the connected environments. By analyzing these flows, particularly between third-party consumers and the Prod environment, we can identify any unintended access or overreach. \n The following diagram is for a Network-centric connection flow: \n \n This following diagram shows an App-centric connection flow using the load balancer: \n \n Product Feature Demo \n \n Conclusion \n Effective network segmentation is a cornerstone of secure and efficient cloud environments. We’ve discussed how F5 XC enables hybrid cloud transit and extranet communication. Extranet can be done with either a network centric or app-centric deployment. \n F5 XC is an end to end platform that manages and orchestrates end-to-end segmentation and security in hybrid-cloud environments. Enterprises can achieve comprehensive segmentation, ensuring isolation, secure access, and compliance. The strategies and examples provided demonstrate how to implement and manage segmentation across hybrid environments, catering to diverse requirements and enhancing overall network security. \n Additional Resources \n More features and guidance are provided in the comprehensive guide below, where showing exactly how you can use the power and flexibility of F5 Distributed Cloud and Cloud Connect to deliver a Network-centric approach with a firewall and an App-centric approach with a load balancer. Create and manage segmented networks in your own cloud and on-prem environments, and achieve the following benefits: \n \n Ability to isolate environments within AWS \n Ability to extend segmentation to on-prem environments \n Ability to connect external partners or customers to a specific segment \n Use Enhanced Firewall Policies to limit access and reduce the blast radius \n Enhance the compliance and regulatory requirements by isolating sensitive data and systems \n Visualize and monitor the traffic flows and policies across segments and network domains \n \n Workflow Guide - Secure Network Fabric (Multi-Cloud Networking) \n \n YouTube: Using network segmentation for hybrid-cloud and extranet with F5 Distributed Cloud Services \n DevCentral: Secure Multicloud Networking Article Series \n GitHub: S-MCN Use-case Playbooks (Console, Automation) for F5 Distributed Cloud Customers \n F5.com: Product Information \n Product Documentation \n \n Network Segmentation \n Cloud Connect \n Network Segment Connectors \n App Security \n App Networking \n CE Site Management \n 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Connectivity in F5 Distributed Cloud Network Connect – Reference Architecture","conversation":{"__ref":"Conversation:conversation:330993"},"id":"message:330993","revisionNum":2,"uid":330993,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:420638"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":634},"postTime":"2024-07-09T05:00:00.036-07:00","lastPublishTime":"2024-07-09T05:00:00.036-07:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" Purpose \n This guide describes the reference architecture for deploying F5 Distributed Cloud’s (XC) Multicloud Network Connect service to interconnect their workload across private connectivity or the internet. It enumerates the options available to an F5 Distributed Cloud user to configure site-to-site connectivity using F5 XC Customer Edges (CEs) and explains them in detail to help the user make informed decisions to choose the correct topology for their use case. \n Audience \n This guide is for technical readers, including network admins and architects who want to understand how the Multicloud Network Connect service works and what network topology they must use to interconnect their workloads across data centers, branches, and public clouds. \n This guide assumes the reader is familiar with networking concepts like routing, default gateway configurations, IPSec and SSL encryption, and private connectivity solutions provided by public clouds like AWS Direct Connect and Azure Express Route. \n Introduction \n Ensuring workload reachability across data centers, branches, and/or public cloud can be challenging and operationally complex if done in the traditional way. The network teams must design, configure, and maintain multiple networking and security equipment and need expertise across many vendor solutions that provide functionality like NAT, SD-WAN, VPN, firewalls, access control lists (ACLs), etc. This gets even more nuanced while connecting two networks that have overlapping IP address CIDRs which is often in the case of hybrid cloud deployments and during mergers and acquisitions. \n F5 XC Multicloud Network Connect provides a simple way to configure these interconnections and manage access and security policies across multiple heterogeneous environments, from a single console. It abstracts the complexities by taking the user intent and automating the underlying networking and security while providing the flexibility to choose to connect over a private network or the public internet. \n Customer Edge as a Gateway \n To provide site-to-site reachability and ensure enforcement of the security policies, traffic must flow through the CE site. For this, the CE’s Site Local Inside (SLI) IP address must be used as the default gateway or as the next hop to reach the networks on other sites. \n \n \n Figure: Using CE as the gateway \n Physical vs. Logical Connectivity \n Two or more CE sites can be physically connected in multiple ways. But this does not automatically allow networks on different sites to be L3 routable to each other by default. For this, the user must associate networks with segments. \n The physical connection dictates the path the packets will take while going from one site to the other, and the logical connection connects the VLANs (on-prem) and the VPCs/VNETs (in the public cloud) using network overlay and provides segmentation. \n Note: Multicloud Network Connect provides Layer 3 connectivity between networks. Configuring L3 connectivity is not required to have app-to-app connectivity across the sites. This is done using the distributed load balancer feature under App Connect. \n Physical Transit Options \n Over F5 Global Network Backbone \n A CE site is always connected to the two nearest Regional Edges (REs) for redundancy, using IPSec or SSL tunnels. The REs across different regions are connected via a global, private F5 backbone network. F5’s global network backbone provides high-speed, private transit across regions where Regional Edges are located. Users can use the CE-RE tunnels over the internet to securely connect to this backbone locally and leverage the private connectivity to connect across regions. \n \n Figure: Default CE-CE connectivity over REs and F5 network backbone \n Pros: \n \n No need to manage underlay networking if using CE-RE tunnels over the internet. \n High-speed private transit between geographically distant regions, at no extra cost. \n End-to-end encryption of traffic between sites. \n Option to have end-to-end private connectivity \n \n Cons: \n \n Throughput is limited to the bandwidth of the two tunnels per site. \n \n When To Use: \n \n The easiest way to connect when private connectivity is not available between data centers or to the cloud VPCs in the case of hybrid cloud. \n IPSec/SSL tunnels over the internet are acceptable, but you do not want to manage multiple VPN tunnels or SD-WAN devices. \n Connecting geographically distant sites and you need better end-to-end latency and reliability than going over the internet. \n \n Direct Site-to-Site Over Internet \n If security regulations prevent the use of F5’s private backbone network, users can connect the CE sites directly to each other using IPSec tunnels (SSL encryption is not supported in this case). This is done using the Site Mesh Group (SMG) feature. \n Note: Even when the CEs are a part of Site Mesh Group, they will still connect to the REs using encrypted tunnels as this is required for control plane connectivity. \n When the sites are in an SMG, the data path traffic flows through the CE-CE tunnels as the preferred path. If this link fails, as a backup, the traffic gets routed to the REs and over the F5 network backbone to the other site. \n The number of tunnels on each link between two CE sites depends on the number of control nodes they have. Two single-node sites are connected using only one tunnel. If any one of these sites has three control nodes, it forms three tunnels to the other site. \n \n Figure: Number of tunnels between sites in a SMG \n Pros: \n \n Sites are directly connected, so the data path is not dependent on RE. \n Easy connectivity over the internet \n Traffic is always encrypted in transit \n Eliminates the need to manually configure cross-site VPNs or SD-WAN. \n \n Cons: \n \n Encryption and decryption require more CPU resources on CE nodes as performance requirements increase. \n \n Note: L3 Mode Enhanced Performance can be enabled on the sites to get more performance from available CPU and memory resources, but this must be enabled when the site is used only for L3 connectivity as it reduces the resources available for L7 features. \n Direct Site-to-Site Over Customer’s Network Backbone \n The CE-CE tunnels can also be configured to be connected over a private network if end-to-end private connectivity is required. Customer can leverage their existing private connectivity between data centers provisioned using private NaaS providers like Equinix. \n The sites can either be connected directly using SMG where the connections are encrypted or using the DC Cluster Group (DCG) feature, which connects the sites using IP-in-IP tunnels (no encryption). \n The number of tunnels on each link between two CE sites depends on the number of control nodes they have. Two single-node sites are connected using only one tunnel. If any one of these sites has three control nodes, it forms three tunnels to the other site. \n A DCG will give better performance, while an SMG is more secure. Unlike SMG, DCG does not fall back to sending RE-CE tunnels if private connectivity fails. \n Pros: \n \n Data path confined within the customer’s private perimeter. \n Sites are directly connected, so the data path is not dependent on RE. \n Option to choose encrypted or unencrypted transit. \n Simplifies the ACLs on the physical network and allows users to manage segmentation using the F5 XC console. \n \n Cons: \n \n Customer needs to manage the private connectivity across data centers or from the data center to the public cloud. \n \n Direct Site-to-Site Connectivity Topologies \n For direct site-to-site connectivity, sites can be grouped into Site Mesh Group (SMG) or DC Cluster Group (DCG). These allow sites to connect either in Full Mesh or Hub-Spoke topologies as described below: \n Full Mesh Site Mesh Group \n All sites that are part of a full-mesh SMG are connected to every other site using IPSec tunnels, forming a full-mesh topology. \n \n \n Figure: Sites in full mesh Site Mesh Group \n When To Use: \n \n In Hybrid cloud use cases. \n When all sites have equal functionality (e.g. connecting workloads across data centers). \n High fault tolerance is required for site-to-site connectivity (not dependent on any one site for transit). \n \n Hub-Spoke Site Mesh Group \n This mode allows the sites to be grouped into a hub SMG and a spoke SMG. The sites within the hub SMG are connected using full mesh topology. The sites within the spoke SMG are connected to the sites in hub SMG only and not to other sites in the spoke SMG. \n \n Figure: Sites in Hub-Spoke Site Mesh Group \n Some characteristics of Hub-Spoke SMG: \n \n The hub can have multiple sites for redundancy, but it usually has one site in most customer use cases. \n A hub site can be a spoke site for a different Hub-Spoke SMG. \n A CE site can be a spoke for multiple hubs. \n \n When To Use: \n \n For data center/cloud to edge/branch connectivity use cases. \n \n Full Mesh DC Cluster Group \n DC Cluster Group only supports full mesh topology. Every site in a DCG is connected to every other site using IP-in-IP tunnels. Traffic is not encrypted in transit, but DCG is only supported when sites can be connected over a private network. \n \n \n Figure: Sites in DC Cluster Group \n When To Use: \n \n Connecting VLANs on a data center to VLANs on other data centers or to public cloud VPCs/VNETs, when there is private connectivity between them. \n When the security regulations allow unencrypted traffic over the private transit. \n \n Offline Survivability \n CE Sites require control plane connectivity to the REs and Global Controller (GC) to exchange routes, renew certificates, and decrypt blindfolded secrets. To enable business continuity during an upstream outage, the Offline Survivability feature can be enabled on all sites in a Full Mesh SMG or DCG. The feature is not supported for Hub-Spoke SMG. With this feature enabled the sites can continue normal operations for 7 days without connecting to the REs and the GC. \n With the offline survivability feature enabled on a CE site, the local control plane becomes the certificate authority in case of connectivity loss. The decrypted secrets and certificates are cached locally on the CE. So, this feature is not turned on by default to allow the user to decide if enabling it aligns with the security regulations of the company. \n Logical Connectivity \n Once the physical transit is configured and the connection topology is chosen the workloads on the networks across the sites can be connected using segments or the applications on one site can be delivered to any other site by configuring a distributed load balancer. \n Connect Networks - Segmentation \n Users can create segments and add data center VLANs or public cloud VPCs/VNETs to them. All such networks added to a segment become part of a common routing domain and all workloads on these networks can reach each other using the CE sites as gateways. Users must ensure the networks added to a segment do not overlap. \n Segments are isolated layer 3 domains. So, workloads on one segment cannot access workloads from other segments by default. However, users can configure Segment Connectors to allow traffic from one segment to another. \n \n Figure: Segmentation \n \n Connect Applications - Distributed Load Balancing \n Instead of allowing the workloads to route directly to one another, the user can configure a distributed load balancer to publish a service from one site to other sites. This is done by adding the service endpoints to an origin pool of a load balancer object and advertising it using a custom VIP to another site or multiple sites. This allows the client to connect to the service as a local resource. \n Using Distributed Load Balancing, an LB admin can configure policies to expose the required API of the application only to the required sites. This reduces the attack surface and increases app security. \n \n \n Figure: Distributed Load Balancing \n E.g. in the figure above, the on-prem database is advertised to client apps on AWS and Azure which can access the DB using their local VIP, and the on-prem application is advertised to the client on Azure only. \n Decision Flow to Choose Physical Connectivity Options \n Once you understand the various physical and logical connectivity options, the below chart can help you to make an informed decision based on the connectivity requirements, infrastructure/platform available, and security restrictions. \n \n Once the connectivity is decided, you can choose to connect the network or only publish apps to sites where required based on the application requirements. \n Related Articles \n F5XC Site \n Site Mesh Group \n DC Cluster Group \n Segmentation \n Distributed Load Balancer 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Power of &: F5 Hybrid DNS solution","conversation":{"__ref":"Conversation:conversation:330408"},"id":"message:330408","revisionNum":9,"uid":330408,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:193861"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":1102},"postTime":"2024-06-19T06:00:00.040-07:00","lastPublishTime":"2024-06-19T06:00:00.040-07:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" While some organizations prioritize the advantages of a SaaS solution like scalability, others value the benefits of an on-premises solution, such as data control and migration flexibility. This is why having the option to deploy a hybrid model can be beneficial, not just for redundancy, but also for allowing organizations to blend the best of both worlds. \n \n Understanding the Architecture’s components \n F5 BIG-IP DNS - (formerly BIG-IP GTM) is a well-known on-premise solution for delivering high-performance DNS services such as DNSExpress and DNS Caching. It is also recognized for offering intelligent DNS responses that are based on various factors such as LDNS’ Geolocation (GSLB) and health status of applications. \n F5 Distributed Cloud DNS (F5 XC DNS) – It is F5’s SaaS-based DNS solution which is built on a global data plane, ensuring automatic scalability to meet high-volume demand. Additionally, it also provides GSLB and security such as DNS DoS protection. \n \n On the diagram above, BIG-IP DNS will be the hidden primary DNS, acting as the source of truth for DNS records. This setup ensures centralized control and adds an extra layer of security by reducing exposure to potential attacks. F5XC DNS will function as the secondary DNS server, receiving DNS records from BIG-IP via Zone Transfer. It will be responsible for handling public DNS queries and providing domain name resolution services to clients. \n In the first part of this article, we will show you how to set up and configure BIG-IP DNS as the hidden primary and F5XC DNS as the authoritative secondary DNS server. For some, this setup is sufficient for their requirements, but for others, there may be additional requirements to consider in this hybrid design. In the later part of this article, we will demonstrate how we can address these challenges by leveraging F5's platform features and capabilities! \n \n Steps on Implementing F5 Hybrid DNS Solution \n Step 1: Configure BIG-IP DNS \n First, we need to configure BIG-IP DNS to be able to perform a zone transfer to F5XC DNS. For more details on the configuration, you can check this link: \n https://community.f5.com/kb/technicalarticles/configuring-big-ip-for-zone-transfer-and-dnssec/330359 \n Step 2: Configure F5XC DNS \n Now after you've configured BIG-IP DNS, we need to configure F5 XC DNS to be a secondary DNS server. For more details, check the steps below: \n \n Log into XC Console, select DNS Management option, click Add Zone. \n In Domain Name field, enter the domain/subdomain. In our example, it will be f5sg.com \n Zone Type: Secondary DNS Configuration \n Under the Secondary DNS Configuration field, click Configure \n On the DNS primary server IP field, enter the public IP address of the Primary DNS. In our example it will be the Public IP of BIG-IP DNS. \n On TSIG key, enter the name we used to generate TSIG earlier in BIG-IP. In our example, used example. \n On the TSIG Key algorithm field and select an algorithm from the drop-down. Select hmac-sha256. \n Click Configure in the TSIG key value in base 64 format section, On the Secret Type field, select Clear Secret and paste the secret in the Secret field. Use the same secret we generated earlier in BIG-IP DNS. \n Click Apply. \n \n You should see the DNS records transferred from BIG-IP DNS to F5XC DNS \n \n Step 3: Configure Domain Registrar \n In this example, the domain registrar I'm using is Namecheap. I'll configure it so that the authoritative name server for the domain f5sg.com is set to F5XC (ns1.f5clouddns.com and ns2.f5clouddns.com). \n The steps will vary depending on which domain registrar you are using. Refer to the documentation of your registrar. See the screenshots below for how I configured it in Namecheap. \n \n F5 XC DNS should now be able to answer DNS queries since it is set to be the authoritative DNS. Now, let's do some testing! On my local machine, I will perform a dig on the f5sg.com domain. See below: \n \n You can see that on the dig result, the NS for f5sg.com is set to ns1.f5clouddns.com & ns2.f5clouddns.com! \n \n I can also resolve sales.f5sg.com! \n We have successfully implemented BIG-IP as Hidden Primary and F5XC as Authoritative Secondary DNS! \n \n Challenges and Considerations \n Now let's discuss the additional requirements or challenges that we might encounter with this hybrid setup solution: \n \n Security: We need to comply with security compliance. Nowadays, there are laws requiring the implementation of DNSSEC (DNS Security Extensions). We need to consider this in the design and implement it without adding complexity. \n Resiliency: Although F5XC DNS Infrastructure is built to be resilient, we still want a backup plan to failover to the BIG-IP Primary DNS in case of unforeseen events. This process will be manual, as we need to change the NS records at the registrar to promote the hidden BIG-IP Primary DNS as the authoritative NS for the domain once F5XC is unavailable. \n Synchronization: BIG-IP will not be able to synchronize the GSLB functionality with F5XC because Wide-IP records are non-standard and cannot be transferred as part of zone transfers. \n \n Solution to Challenges \n Now comes the fun part: tackling the challenges we’ve laid out! Fortunately, F5 Distributed Cloud is an API-first platform that enables us to automate configuration. At the same time, we have the power of the BIG-IP platform, where you can run custom scripts that will enable us to integrate it with F5XC through API. \n Solution to Challenge #1: \n This is easy. DNSSEC records like RRSIG, DNSKEY, DS, NSEC, and NSEC3 are standardized and can be synchronized as part of a zone transfer. Since BIG-IP DNS is our primary DNS and supports DNSSEC, we can enable it. The records will synchronize to F5XC DNS and still respond with signed records, maintaining the integrity and security of our DNS infrastructure. \n How do you enable it? Check the last part of the technical article below: \n https://community.f5.com/kb/technicalarticles/configuring-big-ip-for-zone-transfer-and-dnssec/330359 \n Solution to Challenge #2: \n We need to automate failover! But when automating tasks, you need two things: a trigger and an action. In our scenario, our trigger should be the availability of F5XC DNS to resolve DNS queries, and the action should be to change our nameserver to BIG-IP on the domain registrar. \n If you can create and run a script in BIG-IP, it means you can continuously monitor the health of F5XC DNS, allowing us to determine the trigger. \n But what about the action to change the domain name server records in the registrar? It's easy—check if it can be configured via API, then the problem is solved! Let's explore using Namecheap as our registrar for this example. \n \n We will use the BIG-IP EAV (external) monitor to run the script. If you're unfamiliar with the BIG-IP external monitor and its capabilities, check this out → https://my.f5.com/manage/s/article/K71282813 \n A dummy pool configured with an external monitor will run at intervals. The attached script is designed to monitor F5XC and check if it can resolve DNS queries. If it cannot, the script will trigger an API call to Namecheap (our domain registrar) to change the nameservers back to BIG-IP DNS. Simultaneously, the script will update the domain's NS records from F5XC to BIG-IP. \n \n \n \n Step 1: Create an external monitor using the custom script. \n Refer to article K71282813 how to create the external monitor. See the codeshare link for the sample custom script I used: Namecheap and BIG-IP Integration via API | DevCentral \n Step 2: Create a dummy pool and attach the custom external monitor \n \n Let's do some tests! See the results in the later part of this article. \n Solution to Challenge #3: \n We can't use Zone Transfer to synchronize GSLB configurations? No problem! Instead, we'll harness the power of APIs. We can run a custom script in BIG-IP to convert Wide-IP configurations into F5XC DNSLB records via API. Let's see below how we can do this. \n \n On BIG-IP DNS, configure the zone records for the domain f5sg.com to delegate the subdomains needed for GSLB. For example, we need to perform GSLB for www.f5sg.com, we will configure the zone like below: \n www.f5sg.com CNAME www.gslb.f5sg.com gslb.f5sg.com NS ns1.f5clouddns.com \n \n On BIG-IP we will create Wide-IP configuration for www.gslb.f5sg.com which should hold the A records. \n These Wide-IP configurations can be converted by a script to F5XC DNSLB configurations. Check the sample script on this codeshare link: BIG-IP Wide-IP to F5XC DNSLB converter | DevCentral \n \n \n Testing and Result \n Challenge #2: Failover Testing \n To simulate the scenario in which F5XC is unable to respond to DNS queries, we designed the script to execute a dig command to F5XC for a TXT record. If F5XC responds with \"RESPONSE-OK,\" no further action is needed. However, if it fails to respond correctly or does not respond at all, the script will trigger a failover action. \n Scenario 1: When F5XC responds to DNS queries (TXT record value is RESPONSE-OK) \n Namecheap dashboard shows F5XC nameservers \n \n BIG-IP DNS zone records shows F5XC nameservers \n \n F5XC zone records shows F5XC nameservers \n \n Result when performing dig to resolve sales.f5sg.com -> it shows that F5XC nameservers are Authoritative \n \n \n Scenario: When F5XC doesn't respond to DNS queries (TXT record value is RESPONSE-NOT-OK) \n We changed the TXT record value to 'RESPONSE-NOT-OK,' which should mark the monitor as down. \n \n The dummy pool went down, which means the script inside the monitor detected that the dig result was not what it expected. \n \n You can see from the zone records below that the NS records have now changed to GTM (gtm1.f5sg.com and gtm2.f5sg.com) \n \n When we check our domain registrar, Namecheap, we can see that the nameservers are now automatically set to BIG-IP GTMs. \n \n When I issue a dig command from my workstation, I can see that the nameserver responding to my query is gtm1.f5sg.com \n \n Online DNS tools (like MXToolbox) also report that gtm1.f5sg.com is the authoritative NS that responds to the DNS queries for sales.f5sg.com, which resolves to 2.2.2.2 \n \n We have now solved one of the challenges by implementing a backup failover plan using custom monitors and automations, made possible by the power of BIG-IP and APIs! \n Challenge #3: Synchronization Testing \n Using this script, we can convert and synchronize the BIG-IP Wide-IP configuration to its F5XC equivalent configuration \n \n Note: The sample script is limited to handling a Wide-IP with a single GTM pool. Inside the pool is where you will define the IP addresses that you want to load balance. The pool load balancing method is also limited to Round Robin, Ratio, Static Persist, and Global Availability. \n \n The script is designed to run at intervals. There are several ways to execute it: you can use external monitors (as we did earlier) or utilize a cronjob, etc. For testing and simplicity, I will use a cronjob set to run every 10 minutes. \n \n Let's begin creating our GSLB configuration. If you've configured BIG-IP GTM/DNS before, one of the first objects you need to create is a GTM server. \n I've configured two Generic Servers representing the application in two different Data Centers. \n \n Next is we create a GTM Pool which we will associate the Virtual Server inside the GTM server we created earlier. \n (i.e. I'm assigning 1.1.1.1 and 2.2.2.2 as the members of the pool) \n \n Lastly, we will create the Wide-IP record and attach the GTM Pool we created earlier \n \n After this, the script should get triggered and convert this BIG-IP DNS Wide-IP configuration into F5XC DNS configuration. \n We should see that a new Primary Zone will be created in F5XC (gslb.f5sg.com) \n \n When you view the resource records, we should see a DNSLB record which has the record name equivalent to the subdomain of the wide-IP record. \n (BIG-IP DNS Wide-IP record is www.glsb.f5sg.com, In F5XC DNS zone gslb.f5sg.com, the record name is www and pointing to DNSLB object) \n \n The load balancing rules should have the DNSLB pool (pool-www) which is the equivalent of the GTM Pool (pool_www) configured in BIG-IP DNS \n \n The DNSLB pool members will include the same IP addresses we defined as GTM Pool members in BIG-IP DNS. \n There are four load balancing methods available in F5XC, and there is an equivalent BIG-IP DNS load balancing method. The script was created to match this methods but if you configure the BIG-IP DNS pool load balancing method to something other than these four, it will default to Round Robin. \n \n \n \n \n BIG-IP DNS \n F5XC DNS \n \n \n Round Robin \n Round-Robin \n \n \n Ratio \n Ratio-Member \n \n \n Static Persist \n Static-Persist \n \n \n Global Availability \n Priority \n \n \n \n \n \n Based on the results above, we have successfully converted and synchronize BIG-IP DNS Wide-IP configuration into F5XC DNSLB records! \n Conclusion \n \n We have resolved DNS challenges using the power and integration of F5 solutions! By utilizing both BIG-IP and F5XC platforms, which can sign and serve DNSSEC records, we can seamlessly implement DNSSEC in a hybrid setup without complexity. Furthermore, our scalable F5XC Cloud DNS will shield you from myriad DNS DoS attacks, which are continually evolving, especially with the rise of AI. In terms of DNS resiliency, with the power of our API-first platforms and automation, we can create a DNS hybrid solution capable of automatically failing over from Cloud DNS to on-prem DNS. Lastly, we can synchronize the configurations of both platforms using standards like Zone Transfer and APIs. This capability allows us to convert and synchronize GSLB configurations between our on-prem DNS and Cloud DNS, making administration easier, and establishing a single source of truth. 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I want for Christmas is a hybrid cloud","conversation":{"__ref":"Conversation:conversation:274900"},"id":"message:274900","revisionNum":1,"uid":274900,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:273745"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":380},"postTime":"2015-12-22T04:57:29.000-08:00","lastPublishTime":"2015-12-22T04:57:29.000-08:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" \n\n \n\n ********** \n\n \n\n Dear Santa, \n\n \n\n I hope you and the reindeers are as excited as I am about Christmas! Make sure you get plenty of rest between now and then, so you can deliver all those lovely presents all over the world on Christmas Eve. \n\n \n\n I’ve thought a lot about what I want for Christmas, and have finally made a decision. This Christmas all I want is a hybrid cloud. I’ve heard so much about them, and lots of people either already have them or are getting them soon, and I want to join the fun! \n\n \n\n I really want a hybrid cloud because of the benefits it brings: increased scalability, improved security, better resource allocation, better availability and resiliency, and it’s much more cost-effective. And who wouldn’t want that! I hope I wake up on Christmas morning with a lovely new hybrid cloud infrastructure! I just hope you can fit it on your sleigh. \n\n \n\n ********** \n\n \n\n I think Santa’s got some work to do to get me a hybrid cloud infrastructure for Christmas! But the point made above about lots of people going down the hybrid route is true: the recent Right Scale 2015 State of the Cloud Report revealed that 82% of businesses have a hybrid cloud strategy in place. That figure is up from 74% the year before. \n\n \n\n That’s because businesses are attracted by the cost savings it can offer, as well as the other benefits mentioned in my letter to Santa above. But they also don’t want to trade-off control in order to realise these benefits; they want to maintain the same visibility, security and control of a traditional infrastructure. \n\n \n\n The key to a good hybrid environment is the ability to unify all the hardware, software and managed services resources that make up both on-premises and cloud environments. This combination of physical and virtual resources makes it easier to transition workloads to the cloud as and when needed. \n\n \n\n Now, cloud is regularly considered a security risk for organisations. And that’s fair, to some extent: cloud computing and increased mobility has meant enterprise perimeters have changed; applications are now accessed from a variety of environments and from different devices (both corporate and personal) and locations. But having a hybrid environment means security processes and protocols that apply on-premises can be extended to the cloud, protecting your users - and your data - wherever they are. \n\n \n\n This approach not only secures cloud-based, web-based, and virtual applications but also ensures high availability and reliable access. \n\n \n\n Hybrid clouds are the best of both worlds, all the benefits of cloud computing without sacrificing security, flexibility, or cost savings. However, organisations must consider what it takes to ensure applications and services there are treated the same way as on-premises infrastructure, so they can embrace a hybrid cloud with the same confidence as they approach their own data centre. \n\n \n\n Thanks Santa, and have a great Christmas folks! ","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})@stringLength":"3084","kudosSumWeight":0,"repliesCount":0,"readOnly":false,"images":{"__typename":"AssociatedImageConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"videos":{"__typename":"VideoConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}}},"Conversation:conversation:285863":{"__typename":"Conversation","id":"conversation:285863","topic":{"__typename":"TkbTopicMessage","uid":285863},"lastPostingActivityTime":"2015-12-11T13:59:58.000-08:00","solved":false},"User:user:354407":{"__typename":"User","uid":354407,"login":"Robert_Haynes","registrationData":{"__typename":"RegistrationData","status":null},"deleted":false,"avatar":{"__typename":"UserAvatar","url":"https://community.f5.com/t5/s/zihoc95639/m_assets/avatars/default/avatar-10.svg?time=0"},"id":"user:354407"},"TkbTopicMessage:message:285863":{"__typename":"TkbTopicMessage","subject":"Bringing Consistency to Hybrid Cloud","conversation":{"__ref":"Conversation:conversation:285863"},"id":"message:285863","revisionNum":1,"uid":285863,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:354407"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":179},"postTime":"2015-12-11T13:59:58.000-08:00","lastPublishTime":"2015-12-11T13:59:58.000-08:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" The term Hybrid Cloud is at the same stage that ‘Cloud’ was a few years ago: Used everywhere but generally misrepresented. What most people have is basically a mix of on-premises, cloud based and SaaS applications, often with only limited interaction between them. And that’s OK. It represents a stage on our journey to a more integrated, flexible service delivery architecture where, eventually, policy will probably automatically determine where an application workload runs. What we need to know is what path we need to take to get from here to there with the minimum of wasted effort and dead ends. One of the things that seems necessary to me is having ubiquitous and consistent application services in all your locations. What are application services? They are all the things that are neither the application or the base infrastructure. Firewalls, application delivery controllers, protocol gateways: these are all services that help to make an application more salable, secure or available. To really create a flexible environment, we need to know that an application can be deployed in our chosen location and that it will have the services it needs to work. From an operational perspective we want consistency and homogenous management across our various infrastructures, a common set of tools and processes. One way to do this is to choose vendors that can supply services wherever we are going to need them, at the scale we require. This, I think is a significant advantage of F5. Whether you need a high capacity Viprion for a high performance application running on dedicated hardware, or a farm of lab-edition BIG-IP’s running in AWS for your test and development, and anything in between, we will be there with you. Providing our range of security, availability and optimization services wherever your applications need them, and helping you turn hybrid cloud into reality. ","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})@stringLength":"1902","kudosSumWeight":0,"repliesCount":0,"readOnly":false,"images":{"__typename":"AssociatedImageConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"videos":{"__typename":"VideoConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}}},"Conversation:conversation:276565":{"__typename":"Conversation","id":"conversation:276565","topic":{"__typename":"TkbTopicMessage","uid":276565},"lastPostingActivityTime":"2015-05-15T12:10:00.000-07:00","solved":false},"User:user:172184":{"__typename":"User","uid":172184,"login":"Andrew_Ragone_2","registrationData":{"__typename":"RegistrationData","status":null},"deleted":false,"avatar":{"__typename":"UserAvatar","url":"https://community.f5.com/t5/s/zihoc95639/m_assets/avatars/default/avatar-2.svg?time=0"},"id":"user:172184"},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yNzY1NjUtMTM3MzlpRTcxMDA1NjE2QzY3ODUzMA?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yNzY1NjUtMTM3MzlpRTcxMDA1NjE2QzY3ODUzMA?revision=1","title":"0151T000003d6WRQAY.png","associationType":"BODY","width":800,"height":420,"altText":null},"TkbTopicMessage:message:276565":{"__typename":"TkbTopicMessage","subject":"Cloud bursting, the hybrid cloud, and why cloud-agnostic load balancers matter","conversation":{"__ref":"Conversation:conversation:276565"},"id":"message:276565","revisionNum":1,"uid":276565,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:172184"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":968},"postTime":"2015-05-15T12:10:00.000-07:00","lastPublishTime":"2015-05-15T12:10:00.000-07:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" Cloud Bursting and the Hybrid Cloud \n\n When researching cloud bursting, there are many directions Google may take you. Perhaps you come across services for airplanes that attempt to turn cloudy wedding days into memorable events. Perhaps you'd rather opt for a service that helps your IT organization avoid rainy days. Enter cloud bursting ... yes, the one involving computers and networks instead of airplanes. \n\n Cloud bursting is a term that has been around in the tech realm for quite a few years. It, in essence, is the ability to allocate resources across various public and private clouds as an organization's needs change. These needs could be economic drivers such as Cloud 2 having lower cost than Cloud 1, or perhaps capacity drivers where additional resources are needed during business hours to handle traffic. For intelligent applications, other interesting things are possible with cloud bursting where, for example, demand in a geographical region suddenly needs capacity that is not local to the primary, private cloud. Here, one can spin up resources to locally serve the demand and provide a better user experience. Nathan Pearce summarizes some of the aspects of cloud bursting in this minute long video, which is a great resource to remind oneself of some of the nuances of this architecture. \n\n While Cloud Bursting is a term that is generally accepted by the industry as an \"on-demand capacity burst,\" Lori MacVittie points out that this architectural solution eventually leads to a Hybrid Cloud where multiple compute centers are employed to serve demand among both private-based resources are and public-based resources, or clouds, all the time. The primary driver for this: practically speaking, there are limitations around how fast data that is critical to one's application (think databases, for example) can be replicated across the internet to different data centers. Thus, the promises of \"on-demand\" cloud bursting scenarios may be short lived, eventually leaning in favor of multiple \"always-on compute capacity centers\" as loads increase for a given application. In any case, it is important to understand that that multiple locations, across multiple clouds will ultimately be serving application content in the not-too-distant future. \n\n \n\n \n\n An example hybrid cloud architecture where services are deployed across multiple clouds. The \"application stack\" remains the same, using LineRate in each cloud to balance the local application, while a BIG-IP Local Traffic Manager balances application requests across all of clouds. \n\n Advantages of cloud-agnostic Load Balancing \n\n As one might conclude from the Cloud Bursting and Hybrid Cloud discussion above, having multiple clouds running an application creates a need for user requests to be distributed among the resources and for automated systems to be able to control application access and flow. In order to provide the best control over how one's application behaves, it is optimal to use a load balancer to serve requests. No DNS or network routing changes need to be made and clients continue using the application as they always did as resources come online or go offline; many times, too, these load balancers offer advanced functionality alongside the load balancing service that provide additional value to the application. Having a load balancer that operates the same way no matter where it is deployed becomes important when resources are distributed among many locations. Understanding expectations around configuration, management, reporting, and behavior of a system limits issues for application deployments and discrepancies between how one platform behaves versus another. \n\n With a load balancer like F5's LineRate product line, anyone can programmatically manage the servers providing an application to users. Leveraging this programatic control, application providers have an easy way spin up and down capacity in any arbitrary cloud, retain a familiar yet powerful feature-set for their load balancer, ultimately redistribute resources for an application, and provide a seamless experience back to the user. No matter where the load balancer deployment is, LineRate can work hand-in-hand with any web service provider, whether considered a cloud or not. Your data, and perhaps more importantly cost-centers, are no longer locked down to one vendor or one location. With the right application logic paired with LineRate Precision's scripting engine, an application can dynamically react to take advantage of market pricing or general capacity needs. Consider the following scenarios where cloud-agnostic load balancer have advantages over vendor-specific ones: \n\n Economic Drivers \n\n \n \n Time-dependent instance pricing\n\n Spot instances with much lower cost becoming available at night Example: my startup's billing system can take advantage in better pricing per unit of work in the public cloud at night versus the private datacenter \n Multiple vendor instance pricing\n Cloud 2 just dropped their high-memory instance pricing lower than Cloud 1's Example: Useful for your workload during normal business hours; My application's primary workload is migrated to Cloud 2 with a simple config change \n Competition\n Having multiple cloud deployments simultaneously increases competition, and thus your organization's negotiated pricing contracts become more attractive over time \n \n \n \n\n Computational Drivers \n\n \n \n Traffic Spikes\n\n Someone in marketing just tweeted about our new product. All of a sudden, the web servers that traditionally handled all the loads thrown at them just fine are getting slashdotted by people all around North America placing orders. Instead of having humans react to the load and spin up new instances to handle the load - or even worse: doing nothing - your LineRate system and application worked hand-in-hand to spin up a few instances in Microsoft Azure's Texas location and a few more in Amazon's Virginia region. This helps you distribute requests from geographically diverse locations: your existing datacenter in Oregon, the central US Microsoft Cloud, and the east-coast based Amazon Cloud. Orders continue to pour in without any system downtime, or worse: lost customers. \n Compute Orchestration\n A mission-critical application in your organization's private cloud unexpectedly needs extra computer power, but needs to stay internal for compliance reasons. Fortunately, your application can spin up public cloud instances and migrate traffic out of the private datacenter without affecting any users or data integrity. Your LineRate instance reaches out to Amazon to boot instances and migrate important data. More importantly, application developers and system administrators don't even realize the application has migrated since everything behaves exactly the same in the cloud location. Once the cloud systems boot, alerts are made to F5's LTM and LineRate instances that migrate traffic to the new servers, allowing the mission-critical app to compute away. You just saved the day! \n \n \n \n\n The benefit to having a cloud-agnostic load balancing solution for connecting users with an organization's applications not only provides a unified user experience, but provides powerful, unified way of controlling the application for its administrators as well. If all of a sudden an application needs to be moved from, say, a private datacenter with a 100 Mbps connection to a public cloud with a GigE connection, this can easily be done without having to relearn a new load balancing solution. \n\n F5's LineRate product is available for bare-metal deployments on x86 hardware, virtual machine deployments, and has recently deployed an Amazon Machine Image (AMI). All of these deployment types leverage the same familiar, powerful tools that LineRate offers: lightweight and scalable load balancing, modern management through its intuitive GUI or the industry-standard CLI, and automated control via its comprehensive REST API. LineRate Point Load Balancer provides hardened, enterprise-grade load balancing and availability services whereas LineRate Precision Load Balancer adds powerful Node.js programmability, enabling developers and DevOps teams to leverage thousands of Node.js modules to easily create custom controls for application network traffic. \n\n Learn about some of LineRate's advanced scripting and functionality here, or try it out for free to see if LineRate is the right cloud-agnostic load balancing solution for your organization. ","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})@stringLength":"8763","kudosSumWeight":0,"repliesCount":0,"readOnly":false,"images":{"__typename":"AssociatedImageConnection","edges":[{"__typename":"AssociatedImageEdge","cursor":"MjUuMnwyLjF8b3wyNXxfTlZffDE","node":{"__ref":"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yNzY1NjUtMTM3MzlpRTcxMDA1NjE2QzY3ODUzMA?revision=1\"}"}}],"totalCount":1,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"videos":{"__typename":"VideoConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}}},"Conversation:conversation:285098":{"__typename":"Conversation","id":"conversation:285098","topic":{"__typename":"TkbTopicMessage","uid":285098},"lastPostingActivityTime":"2015-02-02T08:41:02.000-08:00","solved":false},"User:user:171720":{"__typename":"User","uid":171720,"login":"Lori_MacVittie","registrationData":{"__typename":"RegistrationData","status":null},"deleted":false,"avatar":{"__typename":"UserAvatar","url":"https://community.f5.com/t5/s/zihoc95639/m_assets/avatars/default/avatar-10.svg?time=0"},"id":"user:171720"},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODUwOTgtMzY2OGlEMDM4RkVDNjExQTZBNTQw?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODUwOTgtMzY2OGlEMDM4RkVDNjExQTZBNTQw?revision=1","title":"0151T000003d9GYQAY.png","associationType":"BODY","width":188,"height":226,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODUwOTgtMTI5OTFpMzRGRjgxNjM3RTY1RjBGMg?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODUwOTgtMTI5OTFpMzRGRjgxNjM3RTY1RjBGMg?revision=1","title":"0151T000003d9GXQAY.gif","associationType":"BODY","width":46,"height":28,"altText":null},"TkbTopicMessage:message:285098":{"__typename":"TkbTopicMessage","subject":"The Three Reasons Hybrid Clouds Will Dominate","conversation":{"__ref":"Conversation:conversation:285098"},"id":"message:285098","revisionNum":1,"uid":285098,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:171720"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":362},"postTime":"2010-03-22T03:49:42.000-07:00","lastPublishTime":"2010-03-22T03:49:42.000-07:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" In the short term, hybrid cloud is going to be the cloud computing model of choice. Amidst all the disconnect at CloudConnect regarding standards and where “cloud” is going was an undercurrent of adoption of what most have come to refer to as a “hybrid cloud computing” model. This model essentially “extends” the data center into “the cloud” and takes advantage of less expensive compute resources on-demand. What’s interesting is that the use of this cheaper compute is the granularity of on-demand. The time interval for which resources are utilized is measured more in project timelines than in minutes or even hours. Organizations need additional compute for lab and quality assurance efforts, for certification testing, for production applications for which budget is limited. These are not snap decisions but rather methodically planned steps along the project management lifecycle. It is on-demand in the sense that it’s “when the organization needs it”, and in the sense that it’s certainly faster than the traditional compute resource acquisition process, which can take weeks or even months. Also mentioned more than once by multiple panelists and speakers was the notion of separating workload such that corporate data remains in the local data center while presentation layers and GUIs move into the cloud computing environment for optimal use of available compute resources. This model works well and addresses issues with data security and privacy, a constant top concern in surveys and polls regarding inhibitors of cloud computing. It’s not just the talk at the conference that makes such a conclusion probabilistic. An Evans Data developer survey last year indicated that more than 60 percent of developers would be focusing on hybrid cloud computing in 2010. Results of the Evans Data Cloud Development Survey, released Jan. 12, show that 61 percent of the more than 400 developers polled said some portion of their organizations' IT resources \"will move to the public cloud within the next year,\" Evans Data said. \"However, over 87 percent [of the developers] say half or less then half of their resources will move ... As a result, the hybrid cloud is set to dominate the coming IT landscape.\" There are three reasons why this model will become the de facto standard strategy for leveraging cloud computing, at least in the short term and probably for longer than some pundits (and providers) hope. ","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})@stringLength":"2456","kudosSumWeight":0,"repliesCount":2,"readOnly":false,"images":{"__typename":"AssociatedImageConnection","edges":[{"__typename":"AssociatedImageEdge","cursor":"MjUuMnwyLjF8b3wyNXxfTlZffDE","node":{"__ref":"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODUwOTgtMzY2OGlEMDM4RkVDNjExQTZBNTQw?revision=1\"}"}},{"__typename":"AssociatedImageEdge","cursor":"MjUuMnwyLjF8b3wyNXxfTlZffDI","node":{"__ref":"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODUwOTgtMTI5OTFpMzRGRjgxNjM3RTY1RjBGMg?revision=1\"}"}}],"totalCount":2,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"videos":{"__typename":"VideoConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}}},"Conversation:conversation:274701":{"__typename":"Conversation","id":"conversation:274701","topic":{"__typename":"TkbTopicMessage","uid":274701},"lastPostingActivityTime":"2015-01-15T16:25:00.000-08:00","solved":false},"User:user:157754":{"__typename":"User","uid":157754,"login":"Nathan_Pearce_1","registrationData":{"__typename":"RegistrationData","status":null},"deleted":false,"avatar":{"__typename":"UserAvatar","url":"https://community.f5.com/t5/s/zihoc95639/m_assets/avatars/default/avatar-9.svg?time=0"},"id":"user:157754"},"TkbTopicMessage:message:274701":{"__typename":"TkbTopicMessage","subject":"Don’t believe a word I say about Cloud – listen to my customer!","conversation":{"__ref":"Conversation:conversation:274701"},"id":"message:274701","revisionNum":1,"uid":274701,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:157754"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":261},"postTime":"2015-01-15T16:25:00.000-08:00","lastPublishTime":"2015-01-15T16:25:00.000-08:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" Everbridge is a critical communications platform provider - that’s what it says on their website. What their website won’t tell you is that the Everbridge IT team are a collective of experts when it comes to consuming cloud-based services, and they’ve put together a solid strategy that matches the high expectations of their customers without introducing risk to their business. \n\n Critical Communications Platform what? During critical events, Everbridge removes global, regional, and technology barriers, enabling organizations to quickly communicate and collaborate within the right context. They provide the most secure, comprehensive, and resilient platform on the market to improve critical communications and increase situational intelligence for diverse industries, including corporations, state and local government, healthcare, financial services, and higher education. \n\n The services provided by Everbridge save lives, and as you’ve likely worked out for yourself they do not have the luxury of backing out of deployments, or rescheduling the migration of a service to a cloud platform. Their business requires them to react, quickly and reliably, providing a consistent platform where ever required, anywhere in the world. \n\n How do you do it? Everbridge deliver their applications and services through a common set of application delivery policies across all of their chosen platforms: hardware and software, running on both private and public infrastructure. By using F5 for their application delivery, security and DNS services Everbridge is able to deploy predefined policies anywhere they workload is needed, anywhere in the world. This model eliminates the requirement of them to learn and manage an array of cloud provider services, and avoid adding unnecessary complexity deployment and administrative complexity, for their application availability, security and performance requirements. \n\n Anyway, don’t take my word for it, here’s a short video from Everbridge explaining how to reduce the associated risks with and to simplify the journey to cloud. \n\n \n\n \n\n ","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})@stringLength":"2106","kudosSumWeight":0,"repliesCount":0,"readOnly":false,"images":{"__typename":"AssociatedImageConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}},"videos":{"__typename":"VideoConnection","edges":[],"totalCount":0,"pageInfo":{"__typename":"PageInfo","hasNextPage":false,"endCursor":null,"hasPreviousPage":false,"startCursor":null}}},"Conversation:conversation:280593":{"__typename":"Conversation","id":"conversation:280593","topic":{"__typename":"TkbTopicMessage","uid":280593},"lastPostingActivityTime":"2014-08-12T11:19:00.000-07:00","solved":false},"User:user:321706":{"__typename":"User","uid":321706,"login":"PSilva","registrationData":{"__typename":"RegistrationData","status":null},"deleted":false,"avatar":{"__typename":"UserAvatar","url":"https://community.f5.com/t5/s/zihoc95639/images/dS0zMjE3MDYtMjE0NTFpRDA4NDA4QzE2MUZCREM5NA"},"id":"user:321706"},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMTE5NjhpNkZFMDBFMTg0MkRGQjREQQ?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMTE5NjhpNkZFMDBFMTg0MkRGQjREQQ?revision=1","title":"0151T000003d6EoQAI.jpg","associationType":"BODY","width":623,"height":269,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMzUyN2k1OUExNUNEM0ZEOUQ0QzZB?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMzUyN2k1OUExNUNEM0ZEOUQ0QzZB?revision=1","title":"0151T000003d5QFQAY.png","associationType":"BODY","width":24,"height":24,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtODU2MGk2QkNEN0U4RDIzMTRDODIx?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtODU2MGk2QkNEN0U4RDIzMTRDODIx?revision=1","title":"0151T000003d5QGQAY.png","associationType":"BODY","width":24,"height":24,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMTE3MzJpM0E4OEVGQkREODAwOEVEMw?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMTE3MzJpM0E4OEVGQkREODAwOEVEMw?revision=1","title":"0151T000003d5QIQAY.png","associationType":"BODY","width":24,"height":24,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtNzg5aTE0NUM2OUY4MUY3MUFFQjM?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtNzg5aTE0NUM2OUY4MUY3MUFFQjM?revision=1","title":"0151T000003d5QHQAY.png","associationType":"BODY","width":24,"height":24,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMzQ3NWk3Qjg2OTYyMzNERDMzOURC?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtMzQ3NWk3Qjg2OTYyMzNERDMzOURC?revision=1","title":"0151T000003d5QLQAY.png","associationType":"BODY","width":24,"height":24,"altText":null},"AssociatedImage:{\"url\":\"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtNTk4M2k1MzIwOUY5NEIzNUM0RUQ5?revision=1\"}":{"__typename":"AssociatedImage","url":"https://community.f5.com/t5/s/zihoc95639/images/bS0yODA1OTMtNTk4M2k1MzIwOUY5NEIzNUM0RUQ5?revision=1","title":"0151T000003d5QMQAY.png","associationType":"BODY","width":24,"height":24,"altText":null},"TkbTopicMessage:message:280593":{"__typename":"TkbTopicMessage","subject":"Highly Available Hybrid","conversation":{"__ref":"Conversation:conversation:280593"},"id":"message:280593","revisionNum":1,"uid":280593,"depth":0,"board":{"__ref":"Tkb:board:TechnicalArticles"},"author":{"__ref":"User:user:321706"},"teaser@stripHtml({\"removeProcessingText\":true,\"truncateLength\":-1})":"","introduction":"","metrics":{"__typename":"MessageMetrics","views":295},"postTime":"2014-08-12T11:19:00.000-07:00","lastPublishTime":"2014-08-12T11:19:00.000-07:00","body@stripHtml({\"removeProcessingText\":true,\"removeSpoilerMarkup\":true,\"removeTocMarkup\":true,\"truncateLength\":-1})":" Achieving the ultimate ‘Five Nines’ of web site availability (around 5 minutes of downtime a year) has been a goal of many organizations since the beginning of the internet era. There are several ways to accomplish this but essentially a few principles apply. \n\n Eliminate single points of failure by adding redundancy so if one component fails, the entire system still works. Have reliable crossover to the duplicate systems so they are ready when needed. And have the ability to detect failures as they occur so proper action can be taken. \n\n If the first two are in place, hopefully you never see a failure but maintenance is a must. \n\n BIG-IP high availability (HA) functionality, such as connection mirroring, configuration synchronization, and network failover, allow core system services to be available for BIG-IP to manage in the event that a particular application instance becomes unavailable. Organizations can synchronize BIG-IP configurations across data centers to ensure the most up to date policy is being enforced throughout the entire infrastructure. In addition, BIG-IP itself can be deployed as a redundant system either in active/standby or active/active mode. \n\n \n\n Web applications come in all shapes and sizes from static to dynamic, from simple to complex from specific to general. No matter the size, availability is important to support the customers and the business. The most basic high-availability architecture is the typical 3-tier design. A pair of ADCs in the DMZ terminates the connection; they in turn intelligently distribute the client request to a pool (multiple) of application servers which then query the database servers for the appropriate content. Each tier has redundant servers so in the event of a server outage, the others take the load and the system stays available. \n\n This is a tried and true design for most operations and provides resilient application availability within a typical data center. But fault tolerance between two data centers is even more reliable than multiple servers in a single location, simply because that one data center is a single point of failure. \n\n A hybrid data center approach allows organizations to not only distribute their applications when it makes sense but can also provide global fault tolerance to the system overall. Depending on how an organization’s disaster recovery infrastructure is designed, this can be an active site, a hot-standby, some leased hosting space, a cloud provider or some other contained compute location. As soon as that server, application, or even location starts to have trouble, organizations can seamlessly maneuver around the issue and continue to deliver their applications. \n\n Driven by applications and workloads, a hybrid data center is really a technology strategy of the entire infrastructure mix of on premise and off-premise data compute resources. IT workloads reside in conventional enterprise IT (legacy systems), an on premise private cloud (mission critical apps), at a third-party off-premise location (managed, hosting or cloud provider) or a combination of all three. \n\n The various combinations of hybrid data center types can be as diverse as the industries that use them. Enterprises probably already have some level of hybrid, even if it is a mix of owned space plus SaaS. Enterprises typically like to keep sensitive assets in house but have started to migrate workloads to hybrid data centers. Financial industries might have different requirements than retail. Startups might start completely with a cloud based service and then begin to build their own facility if needed. Mobile app developers, particularly games, often use the cloud for development and then bring it in-house once it is released. Enterprises, on the other hand, have (historically) developed in house and then pushed out to a data center when ready. The variants of industries, situations and challenges the hybrid approach can address is vast. \n\n Manage services rather than boxes. \n\n ps \n\n Related \n\n Hybrid DDoS Needs Hybrid Defense The Conspecific Hybrid Cloud The future of cloud is hybrid ... and seamless Hybrid–The New Normal Hybrid Architectures Do Not Require Private Cloud \n\n \n\n \n\n Technorati Tags: f5,hybrid,cloud,datacenter,applications,availability,silva \n\n \n\n Connect with Peter: Connect with F5: 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