Performance tuning steps of Elasticsearch cluster

Elastic Stack Elasticsearch
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performance tuning steps of Elasticsearch cluster..

Please share the commands and analysis details which can be used as a template

Please do not provide link elastic.co

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Are you having issues?

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es heap size and circuit breaker limit needs to be reviewed for circuitbreaker/OOM exception .
How to check heap size before and after executing a query , and how much field data cache of heap size its used needs to be analyzed

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Are you using Marvel? If not I would suggest starting there as it has easy to view graphs on a bunch of important stats.

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currently we dont use marvel, how to check @ CLI command line interface .also jVM Vs field data cahce variation for query level

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You probably want to look over https://www.elastic.co/guide/en/elasticsearch/guide/current/cluster-admin.html then

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Also https://www.elastic.co/guide/en/elasticsearch/reference/current/cat.html has lots of handy stats.