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Diagnose and Repair Elasticsearch Clusters

Hands-On Lab


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Training Architect





When configured correctly, Elasticsearch clusters are highly available and fault tolerant. That doesn't necessarily mean they are impervious to failure. Human error and hardware failure are always a possibility. Troubleshooting data availability issues on a distributed system can be a challenge so let's take some time to demystify some basic troubleshooting routines when you notice yellow or even red indexes in your Elasticsearch cluster. In this hands-on lab, you are given the opportunity to:

  • Use the _cat APIs to quickly get vital information about your cluster
  • Use the _cluster/allocation/explain API to find out why and index is or is not allocated
  • Use the _settings API to quickly update index settings
What are Hands-On Labs?

Hands-On Labs are scenario-based learning environments where learners can practice without consequences. Don't compromise a system or waste money on expensive downloads. Practice real-world skills without the real-world risk, no assembly required.