ElasticSearch Agent and Memory metrics

Products

• CA Application Performance Management (APM / Wily / Introscope)

Issue/Introduction

How are the OS related metrics are collected using ElasticSearch Agent? 

Total: Elasticsearch|Cluster|es-cluster-verify-workflow|Nodes|es-cluster-verify-workflow-es-master-1|OS|Memory:Total (GB)

236

Total: Elasticsearch|Cluster|es-cluster-verify-workflow|Nodes|es-cluster-verify-workflow-es-master-0|OS|Memory:Total (GB)

503

Total: Elasticsearch|Cluster|es-cluster-verify-workflow|Nodes|es-cluster-verify-workflow-es-master-2|OS|Memory:Total (GB)

236

 

Cause

Lack of documentation 

Environment

Release : 20.2

Component : APM Agents

Resolution

The Memory or OS related metrics are collected using below Elasticsearch RestAPI
    
    http://<ELASTICSEARCH_SERVICE_URL>:<ELASTICSEARCH_PORT>/_nodes/stats
    
 

Additional Information

  We can get more info for these metrics from

https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-nodes-stats.html