We are running a cluster with 3 nodes in prod. After a node failure cluster
started index reallocation. This process took several days with small
pauses (for hours each). When the process finished the cluster looked fine
- everything worked fast, workload was pretty low. After several days the
"rebalancing" or something else started again. The node 01 (which failed
earlier) has almost 100% CPU load and network traffic ~100 mbit from node
02 to node 01. The problem is that we have issues with ElasticSearch for
more that a week!
I have two questions
- What and why elasticsearch is doing?
- Why ES started "doing something" again after >24h pause?
- How to stop this process or understand when it gets finished? Our cliens
are not happy with this terrible lags while ES is doing something
I've attached a screenshot from Zabbix and our ES config which is equal for
Thanks in advance for any help
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