• Review node types, number of shards, and number of replicas
  • With heavy loads master nodes, client nodes, and data nodes maybe best separate
  • Log location vs. data location
  • Data volumes - encrypted or not
  • ElasticSearch defaults to anonymous read/write access
  • Maybe you don't want your cluster on this list
  • Network protection anyone?
  • Don't trust humans - automate configuration and deployment

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