Issue with node discovery

Elastic Stack Elasticsearch
1

I have a 2 node ES cluster setup for testing purpose (i know this is not recommended) everything was working fine until i increased the JVM heap to 8G for performance purpose.
Now this is throwing below exception
To add to this we had restored snapshot from different cluster.

[2017-10-27T04:09:23,661][INFO ][o.e.d.DiscoveryModule    ] [monelkescrt00.northamerica.******.net] using discovery type [zen]
[2017-10-27T04:09:27,671][INFO ][o.e.n.Node               ] [monelkescrt00.northamerica.******.net] initialized
[2017-10-27T04:09:27,671][INFO ][o.e.n.Node               ] [monelkescrt00.northamerica.******.net] starting ...
[2017-10-27T04:09:27,905][INFO ][o.e.t.TransportService   ] [monelkescrt00.northamerica.******.net] publish_address {10.162.***.235:9300}, bound_addresses {10.162.***.235:9300}
[2017-10-27T04:09:27,920][INFO ][o.e.b.BootstrapChecks    ] [monelkescrt00.northamerica.******.net] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2017-10-27T04:09:31,599][INFO ][o.e.d.z.ZenDiscovery     ] [monelkescrt00.northamerica.******.net] failed to send join request to master [{monelkescrt01.northamerica.******.net}{Gn5tyVUAQKmetNeJGyjSFg}{np_tpNVlRqSakfrGFS7RaA}{10.162.***.234}{10.162.***.234:9300}], reason [RemoteTransportException[[monelkescrt01.northamerica.******.net][10.162.***.234:9300][internal:discovery/zen/join]]; nested: IllegalStateException[index [access-2017.08.22/5sOKc68LSIqzWUNNiyNA5g] version not supported: 5.5.2 the node version is: 5.5.1]; ]
2

Did you install the same version of ES on both nodes? Which version is it?

3

Before it was 5.5.1 on 1 and 5.5.2 on 2nd node. Then i tried having the same version on both nodes but not able to download particular version on both the nodes.

4

Why?

5

I got it working, upgraded both nodes to 5.5.2 now all is well.

6

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