Elasticsearch search response time / latency metrics

We are trying to use elasticsearch-exporter (GitHub - prometheus-community/elasticsearch_exporter: Elasticsearch stats exporter for Prometheus) for monitoring our clusters(v7.17) and we want to monitor the cluster performance. Especially search/indexing response time/latency.

It looks like we will have to derive this from available metrics, but its not clear for us. Could someone help with what metrics from node exporter can be used for this purpose?

Also, what are the top 5 things to monitor when it comes to an elasticsearch cluster apart from the above.

Perhaps take a look at this ...

Basically for example, average index latency would be the counter rate of index events divided by the counter rate of index time total.

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