# ES starts up, queries slow down, cluster crashes

**URL:** <https://discuss.elastic.co/t/es-starts-up-queries-slow-down-cluster-crashes/149734>\
**Category:** Elasticsearch\
**Created:** [September 24, 2018, 8:34pm UTC](https://discuss.elastic.co/t/es-starts-up-queries-slow-down-cluster-crashes/149734 "2018-09-24T20:34:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![hokiegeek2](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hokiegeek2/32/11076_2.png) [@hokiegeek2](https://discuss.elastic.co/u/hokiegeek2)\
**Post date:** [September 24, 2018, 8:34pm UTC](https://discuss.elastic.co/t/es-starts-up-queries-slow-down-cluster-crashes/149734/1 "2018-09-24T20:34:09Z")

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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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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 24, 2018, 8:44pm UTC](https://discuss.elastic.co/t/es-starts-up-queries-slow-down-cluster-crashes/149734/2 "2018-09-24T20:44:46Z")

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What is the full output of the [cluster stats API](https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-stats.html)?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 22, 2018, 8:44pm UTC](https://discuss.elastic.co/t/es-starts-up-queries-slow-down-cluster-crashes/149734/3 "2018-10-22T20:44:51Z")

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Closed on October 22, 2018, 8:44pm UTC

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