CODEWITHSUNDEEP
elasticsearch
Orkun
Orkun

Reputation: 512

Defining master nodes in elasticsearch

I define my master nodes in elasticsearch.yml with below code

node.master: true
node.data: true
cluster.initial_master_nodes: ["...","...", "..."...]

I have 10 nodes and I set 6 of them as master.

When I check from kibana devtools with below code:

GET /_cat/nodes?v=

I see all nodes but just one of them is master. Why the other 5 didn't set ? Can someone answer ?

Thanks for answering

Upvotes: 0

Views: 1199

Answers (1)

leandrojmp
leandrojmp

Reputation: 7463

When you set a node as master in the configuration using node.master: true you are actually saying that this node is master eligible, it will be part of the voting process with the other master eligible nodes in the cluster and in the end only one node will be elected as the master node of the cluster.

The return of _cat/nodes is correct, only one node will appear as master, if this node fail for some reason, the other five eligible nodes in your cluster will start another voting process to choose the new master of the cluster.

Upvotes: 1

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