I have an ES 2.3 cluster of 6 nodes running in a data center holding ~60Gb of data.
I wish to find the smoothest migration path with the least downtime possible to move the data over to a similar size cluster running on a public cloud provider.
Is it possible to create nodes on the target data center and add them in the existing cluster then remove nodes on the old cluster one by one ? By reading the docs and blogs it seem like it would not work since they are not on the same subnet. Is there a workaroud ?
I don't have a shared storage on all nodes on the current cluster and the AWS backup plugin seems bugged on that version.
Is there any other path I should consider ?
I am also open to a short downtime < 1-2h if it simplifies thing a lot.