Hello I am a beginner at elastic , I want to ask you what is the criteria to add another elasticsearch data node , meaning how to know if my elasticsearch node needs another node to perform better , is there a percentage of maximum usage or something like this?
Hello,
there are multiple reasons to scale/add nodes into the cluster. I put here some of then just for your reference.
- To achieve high availability and not lose the cluster if one node fails
- To replicate the data, and not lose data if the node containing the data fails
- To increase the resources and performance of the cluster. You should consider there are some kinds of nodes. Check official page. So you can add nodes for ingest, transform, master...
- Cross replication
- ......
Other references:
Hope it helps.
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