The Average Memory Usage of an Elasticsearch Cluster Reaches 98%
Symptom
The cluster monitoring result shows that the average memory usage of a cluster is 98%. Does it affect cluster performance?
Possible Cause
In an ES cluster, 50% of the memory is occupied by Elasticsearch and the other 50% is used by Lucene to cache files. It is normal that the average memory usage reaches 98%.
Solution
You can monitor the cluster memory usage by checking the maximum JVM heap usage and average JVM heap usage.
Cluster Monitoring and O&M FAQs
- Which CSS Metrics Should I Focus On?
- The Average Memory Usage of an Elasticsearch Cluster Reaches 98%
- How Do I Check the Total Disk Usage of a Cluster?
- Will Cluster Services Be Affected If the Usage of a Single Node Is Too High?
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