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?Usefulness of server ip on Big-IP DNS systems
I am trying to understand on a F5 GTM system, what purpose does the server ip fulfill? Say I am setting up a WideIP that's supposed to return the IP of a generic host. How I'd typically go about it is a.) create a "server" object that corresponds to a DataCenter and then b.) configure virtual servers that are part of this server. The Big-IP system requires an IP address for this 'server' object and it doesn't seem to matter what IP you enter - because ultimately - it's the IP of one of the virtual servers that gets returned as the WideIP anyway. I've set up Generic Host servers with made up IPs and it has still worked.
DNS LTM adding recommendation
Hello, What is the recommendation in adding GTM and LTM/AWAF devices in multi datacenter More explanation if we have HQ and DR datacenters HQ data center GTM device (One device) LTM/AWAF Device (Pair) DR data center GTM device (One device) LTM/AWAF Device (Pair) shall we add DR LTM/AWAF to HQ GTM by using DR LTM/AWAF self IP reachable through internet or internally? Please highlight pros and cons for each method Why are we think to add DR LTM/AWAF to HQ GTM is to ensure that HQ GTM will see VS on DR LTM/AWAF down when internet link is down in DR If there another way to ensure that by monitoring links please clarify
failover issue between datacenters with GSLB
Ok I have been looking for the best solution for an application requirement. I have an app that will be living in two datacenters. Each location has 4 servers running. What they want is the application to run 100% of the time in DC1 unless 2 or more servers fail in DC1 and then failover to DC2 I thought this would be rather easy, but I have been unable to find a way to get the VIP to go into a down state if two servers have gone down. Does anyone have a idea how I could implement this? Thanks
