What Do I Do If the Average Memory Usage of a CSS 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 Elasticsearch 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.
Parent topic: CSS Cluster Monitoring and O&M
- Symptom
- Possible Cause
- Solution