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Forum Discussion

adharkrader's avatar
adharkrader
Icon for Nimbostratus rankNimbostratus
Aug 31, 2009

Missed monitor counter or log?

Many of our apps get "sick" before they die: they'll miss 1-2 keepalives over a period of hours or days before they miss enough to be marked down. We'd like to know when they're in that condition so ...
management
monitoring
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Aug 31, 2009
Sorry... I just realised nothing is logged when a single monitor attempt fails--only when a monitor marks a pool member down. So the above suggestions won't help much. You could add a second external monitor to the pool which runs a curl command and logs a message to /var/log/ltm on a single failure. You'd want to set the pool to mark the member up if at least one monitor succeeds so this second monitor won't actually take the pool member out of the rotation. You could then trigger an SNMP trap, email or syslog message to a remote host for single failures. I'd be surprised though if you didn't get a lot of false positives from temporarily busy pool members.

 

 

Aaron