Best practices

This page was generated from content adapted from the AWS Developer Guide

Sizing domains

Dedicated master nodes

  • Note If your cluster doesn't have the necessary quorum to elect a new master node, write and read requests to the cluster both fail. This behavior differs from the OpenSearch default.
  • Note If you deploy the CloudFormation stack, the KMSKeyError and KMSKeyInaccessible alarms will exists in an Insufficient Data state because these metrics only appear if a domain encounters a problem with its encryption key.
  • Note If you just want to view metrics, see Monitoring OpenSearch cluster metrics with Amazon CloudWatch.