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cluster-logging-elasticsearch-storage.adoc

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Configuring Elasticsearch storage

Elasticsearch requires persistent storage. The faster the storage, the faster the Elasticsearch performance is.

Prerequisites

  • Cluster logging and Elasticsearch must be installed.

Procedure

  1. Edit the Cluster Logging CR to specify that each data node in the cluster is bound to a Persistent Volume Claim.

    apiVersion: "logging.openshift.io/v1"
kind: "ClusterLogging"
metadata:
  name: "instance"

....

 spec:
    logStore:
      type: "elasticsearch"
      elasticsearch:
        nodeCount: 3
        storage:
          storageClassName: "gp2"
          size: "200G"

This example specifies each data node in the cluster is bound to a Persistent Volume Claim that requests "200G" of AWS General Purpose SSD (gp2) storage.