# Prioritise health checks in ES cluster to prevent nodes falling out **URL:** \ **Category:** Elasticsearch\ **Created:** [April 5, 2022, 4:00am UTC](https://discuss.elastic.co/t/prioritise-health-checks-in-es-cluster-to-prevent-nodes-falling-out/301578 "2022-04-05T04:00:39Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![anon17386273](https://avatars.discourse-cdn.com/v4/letter/a/d2c977/32.png) [@anon17386273](https://discuss.elastic.co/u/anon17386273)\ **Post date:** [April 5, 2022, 4:00am UTC](https://discuss.elastic.co/t/prioritise-health-checks-in-es-cluster-to-prevent-nodes-falling-out/301578/1 "2022-04-05T04:00:39Z")
Hi I have a 30 node cluster. Occasionally, I encounter searches that spams the cluster, causing health checks to fail. I see errors like "SERVICE\_UNAVAILABLE/2/no master]" and my coordinating node falls out of the cluster I was wondering if there is any setting to prioritise health checking threads so that there is more resiliency ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [April 5, 2022, 4:04am UTC](https://discuss.elastic.co/t/prioritise-health-checks-in-es-cluster-to-prevent-nodes-falling-out/301578/2 "2022-04-05T04:04:58Z")
What version are you running? What is the output from the `_cluster/stats?pretty&human` API? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 3, 2022, 4:05am UTC](https://discuss.elastic.co/t/prioritise-health-checks-in-es-cluster-to-prevent-nodes-falling-out/301578/3 "2022-05-03T04:05:19Z")
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