Forum Discussion
mbrandon32
Cirrus
CirrusGSLB - 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 G...
Amine_Kadimi
MVP
MVPHow is the LTM VIP green if you are using iRule to load balance, does it have a default pool which is green?
mbrandon32Cirrus
CirrusNo default pool. We use an Address List for destination IP.
- Amine_Kadimi
So the VIP itself is blue and not green, the GTM will report it as is because using iquery the system fetches the LTM virtual server status from the LTM without further monitoring.
You need to either implement some sort of monitoring on the LTM, but this is not be possible in your case unless you add a default pool (with monitoring enabled) to the VS, or to implement another type of monitoring except iquery on the GTM which will directly monitor the backend application.
- mbrandon32
That's just it - the VIP is green - which makes me think that the either the Address List availability or a default pool listed in the iRule is available - but in evaluating the iRule, there is no default pool listed. So will have to dig more on how that VIP is showing as green. I've mentioned the direct monitor to the back-end servers, which renders the LTMs useless at that point.