metricbeat/module/elasticsearch/_meta/README.md
Metricbeat will call the following Elasticsearch API endpoints corresponding to each metricset. The module stores a subset of the response in fields which can be found here. The Metricbeat exported fields generally follow the same paths as the elasticsearch API response, but may differ somewhat according to the schema in each metricset. They are namespaced with {module}.{metricset}.
/_ccr/stats/_cluster/stats/_enrich/_stats/_stats/docs,fielddata,indexing,merge,search,segments,store,refresh,query_cache,request_cache?filter_path=indices&expandWildcards=open/_recovery?active_only=trueactive_only value from index_recovery.active_only setting/_stats?level=cluster/_ml/anomaly_detectors/_all/_stats/_nodes/_local/_nodes/{_local|_all}/stats/jvm,indices,fs,os,process,transport,thread_pool,indexing_pressure,ingest/bulk,docs,get,merge,translog,fielddata,indexing,query_cache,request_cache,search,shard_stats,store,segments,refresh,flush_local | _all from scope setting/_cluster/pending_tasks/_cluster/state/version,nodes,master_node,routing_table