How to remove master nodes from the elasticsearch cluster

Elastic Stack Elasticsearch
1

How could I delete two master nodes that are in my cluster, I currently have 3 master nodes, the cluster version is 7.17.

thank you

2

You need to have at least 2 eligible master nodes + 1 master node in the cluster.

Once you have that, you can just stop the master only nodes, one by one.

1 Like
3

You can scale-down the master nodes to 1 if you want, although it's definitely better to have 3 in many cases. The manual describes how:

2 Likes
4

Hello good morning DavidTurner!

I followed the documentation you recommended and it was successful! I was able to remove the master nodes and only keep one in the cluster.

5

I did it like this and it worked wonderfully.
Thank you dadoonet!

6

Why are you reducing to only 1 master eligible node? Are you moving to a single-node cluster?

7

Hi Christian
My idea is to temporarily have a cluster on a single node, then upgrade the other nodes to version 8.10 and then migrate the data from the old cluster to the new one.

8

That seems like an unnecessarily complicated approach. Why not just do a normal rolling upgrade node-by-node?

1 Like
9

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.