We have 3 node elastic search cluster and for certain reason we have to get rid of those VMs, now i need to migrate the data from the existing cluster to new one without a down time.
I thought of adding 3 new nodes to the existing cluster and then shut down the existing nodes one by one. is this a good idea at all?
or
please suggest a best method.
Thanks a lot, @xavierfacq
One quick question. should i stop logstash from feeding the old ES node? before I do the second step. I am bit confused at that.?
Not certain, but it's quite possible that Logstash will see new nodes even if you stop the old. But, I think that you shoud restart your Logstash with new nodes IPS before stopping old nodes.
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