Metric On Shard Reads and Writes

Elastic Stack Elasticsearch
1

We have a huge cluster with 250 nodes.
Multiple nodes go high load at various times, so want to know which shards are actually having higher READs and WRITEs so that I can see any hot shards are there.

How can log count of READs and WRITEs per shard? or is this already available?

2

What version are you on?
What is the output from the _cluster/stats?pretty&human API?

3

Which version of Elasticsearch are you using? Do you have monitoring enabled? Is there anything in the logs around the time this occurs?

4

using Elasticsearch 6.8

the output of _cluster/stats returns the node info, segment info, docs info & the plugins used

cant share everything since its company internal. I can share specifics if want anything specific.

I want to setup a metric says me which shard has most reads and writes

5

anyway to add the below metrics

  1. no of requests per Index & shard
  2. latency per index & shard
6

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