Questions about performance degradation when used with DNS features in GTM solutions
Hi team. Here's the situation I'm in and the questions I have. Situation : A customer is using Window DNS, and in this configuration, an F5 device has been introduced for GSLB purposes. However, the performance of Window DNS is not good, so I am checking if it is possible to use the DNS function on the F5 device introduced for GSLB. Q: I have heard that the performance of the F5 GTM solution degrades when used for DNS functions other than GSLB (I heard from someone that the performance degrades a lot when using BIND). So, I've been looking for official F5 documentation to see if that's true, but I'm not finding it, so I'm asking. Thanks.BIG-IP DNS: Check Status Of Multiple Monitors Against Pool Member
Good day, everyone! Within the LTM platform, if a Pool is configured with "Min 1 of" with multiple monitors, you can check the status per monitor viatmsh show ltm monitor <name>, or you can click the Pool member in the TMUI and it will show you the status of each monitor for that member. I cannot seem to locate a similar function on the GTM/BIG-IP DNS platform. We'd typically use this methodology when transitioning to a new type of monitor, where we can passively test connectivity without the potential for impact prior to removing the previous monitor. Does anyone have a way through tmsh or the TMUI where you can check an individual pool member's status against the multiple monitors configured for its pool? Thanks, all!
GSLB - Monitoring LTM VIP load balancing via iRule
In one of our environments we are configuring a single LTM VIP and load balancing multiple applications via an iRule. We currently have other LTM environments integrated via iQuery with our GTM for GSLB configuration and monitoring. Is there a way to monitor the VIP at the GTM level via iQuery that would give a true back-end pool status? Since, let's say, we are load balancing 100 different applications via a single VIP, if 99 of them went offline, the VIP would still show as ONLINE/GREEN. Or would we even go as far as integrating via iQuery and adding a dependency monitor of the pool itself instead?
GTM answer based on pool member status
Hello, I'd like to configure GTM to answer FQDN request with specific IP address in answer based on status of another GSLB pool member. Example: I have two GSLB pools: pool1 (there are members located in datacenter1) and pool2 (members located in dc2). Required answer to FQDN e.g. 'service.domain.com' is IP1 when pool1 is up, or IP2 when IP2 is up. IP1 and IP2 are not IP addresses of pool members pool1/pool2 but statically defined on GTM (I'm not sure where). I can't use fallback IP (because it is not reflecting pool availability status) Is it possible to configure GTM based on above example?When user goes through LB the server page has stripped information
I have created a pretty simple round robin load balancing for a user with three servers. As a part of this I also have DNS LB in place that sends the traffic to two VIPs that are connected to the three nodes in a pool I have created on my LTM F5. User accesses the LB DNS URL I provide via Https://<>.com > VIP > Pool > Nodes. There is a certificate applied to the clientssl and serverssl profiles attached to the VIPs. The user is able to get to their backend servers/nodes when going through the load balancer, but we are coming across an interesting issue. When the user goes through the F5 the server dashboard page they usually see is stripped of information on that dashboard. Typically, there would be tiles shown on the server dashboard, but it is just the basic UI and none of the tiles. When the user goes directly to their server, all the information/tiles are shown as normal. I have never experienced this problem before and am not sure how to prove out the F5 is causing the issue or how it is happening. Any insight would be greatly appreciated! *Attached file shows what I'm explaining.
F5 GTM Upgrade in Viprion with LTM
We have to plan a Viprion Software upgrade. Suppose we have two data center (say A and B) and 4 Viprion. 2(A1,A2) dedicated for one data center and 2(B1,B2) dedicated for other. A1 contains - a1(LTM), a2(LTM),a3(LTM) and a4(GTM Internal) A2 Contains - a5(LTM), a6(LTM), a7(LTM), a4(GTM External) B1 contains - b1(LTM), b2(LTM),b3(LTM) and b4(GTM Internal) B2 Contains - b5(LTM), b6(LTM), b7(LTM), b8(GTM External) Now we are planning to upgrade to both Viprion pair in two different weeks. But GTM is creating issue. Note - a4 and b4 are stand alone and synced. Similarly a8 and b are stand alone and synced. My question - If I plan upgrade A1 in first week, I have to upgrade a4 and a8. In that a4 and b4 will be in different version and a8 and b8 will be in different version for one week. I just wanted to know, will there be any issue if GTM pairs are in different versions for one week(Note pairs are standalone but synced). Will there be any kind of traffic of conflict issue? Or any suggestion how to plan?Retrieve GTM pool member addresses (Bigrest)
A wide-IP has a pool of servers that are virtual-servers on an LTM. I would like to retrieve the pool member addresses of the virtual servers used in the wide-IP pool using the Bigrest Python library. wide-ip = site.com Pool Name = site_pool Pool Member A = site_a_vs (server = ltm_a) Pool Member B = site_b_vs (server = ltm_b) I can load the wide-IP which provides a poolReference. I can then load the pool, which provides a membersReference. The membersReference provides a serverReference (the LTM) and the vs name. From here, I can load all virtual servers on the server provided by the serverRefence, but unsure how to retrieve only the virtual servers that are relevant to the wide-IP. There is no virtualserver ID provided by the membersReference or ServerReference.
