Chapter 7. Node Failure and Post-Mortem Analysis
In the previous chapter, we learned how to troubleshoot common performance and reliability issues that come up when using Elasticsearch using case studies with real-world examples. This chapter explores some common causes of node and cluster failures. Specific topics covered are as follows:
- How to determine the root cause of a failure
- How to take corrective action for node failures
- Case studies with real-world examples of diagnosing system failures
Diagnosing problems
Elasticsearch node failures can manifest in many different ways. Some of the symptoms of node failures are as follows:
- A node crashes during heavy data indexing
- Elasticsearch process stops running for an unknown reason
- A cluster won't recover ...
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