ES starts up, queries slow down, cluster crashes

Elastic Stack Elasticsearch
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Hi Everyone,

I have a 5.6.4 cluster that I previously had issues starting up, due possibly to a fusillade of dangling index errors combined with relocation shards. I set cluster.routing.allocation.enable=none and that's how I was able to get the cluster back up so I could eventually deal with the dangling index errors.

However, the cluster crashed again and will not come back up. The cluster starts back and then the _cluster/health?pretty queries slow way down over the course of 10 minutes and then the master node heartbeats time out.

I thought the issue could be GC pauses due to the dangling index errors, but that's not the case.

Any ideas?

Thanks

--John

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What is the full output of the cluster stats API?

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