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Alert when a jvm hits more than 100 old gc ops/hour
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Cloudelastic jvms are suffering from weird behaviors of the GC causing slowdowns of the whole cluster and therefor slowing consumption of production MW JobQueues.

We should alert when the GC operations hit a critical threshold, 100 ops seem a good value for raising a critical alert on the number of old gc/hour.
The prometheus metric is elasticsearch_jvm_gc_collection_seconds_count{gc="old"} (used in

Event Timeline

dcausse triaged this task as High priority.Aug 29 2019, 7:10 AM
dcausse moved this task from needs triage to Ops / SRE on the Discovery-Search board.
dcausse added a subscriber: Mathew.onipe.

Change 533189 had a related patch set uploaded (by Mathew.onipe; owner: Mathew.onipe):
[operations/puppet@production] icinga: add old JVM GC check

On another note, I think this check make sense for other clusters as well

Change 533189 merged by Gehel:
[operations/puppet@production] icinga: add old JVM GC check for elastic