# Windows Node Joining Linux Master

**URL:** <https://discuss.elastic.co/t/windows-node-joining-linux-master/112050>\
**Category:** Elasticsearch\
**Created:** [December 15, 2017, 9:42pm UTC](https://discuss.elastic.co/t/windows-node-joining-linux-master/112050 "2017-12-15T21:42:35Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bitva77](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bitva77/32/66694_2.png) [@bitva77](https://discuss.elastic.co/u/bitva77)\
**Post date:** [December 15, 2017, 9:42pm UTC](https://discuss.elastic.co/t/windows-node-joining-linux-master/112050/1 "2017-12-15T21:42:35Z")

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Hi! I've been working on migrating an ES cluster from Windows to Linux. It went pretty smooth but have run into an issue with a ES on Windows joining the cluster. Here's what I see in the logs:

`[2017-12-15T13:27:48,916][INFO][o.e.d.z.ZenDiscovery] [node1] failed to send join request to master [{MASTER}{QSpArcEBR36stwxnB59egQ}{M_sRaowcTt2wlHIiP5WNoA}{10.10.10.157}{10.10.10.157:9300}{ml.max_open_jobs=10, ml.enabled=true}], reason [RemoteTransportException[[MASTER][172.17.0.2:9300][internal:discovery/zen/join]]; nested: IllegalStateException[failure when sending a validation request to node]; nested: RemoteTransportException[[node1][10.10.10.57:9300][internal:discovery/zen/join/validate]]; nested: IllegalArgumentException[Unknown NamedWriteable [org.elasticsearch.cluster.metadata.MetaData$Custom][licenses]]; ]`

Port 9300 is open between this server and the master. On the master side it says:

`[2017-12-15T20:27:49,226][WARN][o.e.d.z.ZenDiscovery] [MASTER] failed to validate incoming join request from node [{node1}{-_dQzvxmTy6hFxacXUUOxw}{0_7v0FDeSsK_0ObzQc7QkQ}{10.10.10.57}{10.10.10.57:9300}] org.elasticsearch.transport.RemoteTransportException: [node1][10.10.10.57:9300][internal:discovery/zen/join/validate] Caused by: java.lang.IllegalArgumentException: Unknown NamedWriteable [org.elasticsearch.cluster.metadata.MetaData$Custom][licenses]`

any help would be greatly appreciated.

Thanks!

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [December 16, 2017, 5:31am UTC](https://discuss.elastic.co/t/windows-node-joining-linux-master/112050/2 "2017-12-16T05:31:35Z")

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Which version are you using? Do you have the same set of plugins installed on all nodes?

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**Author:** ![bitva77](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bitva77/32/66694_2.png) [@bitva77](https://discuss.elastic.co/u/bitva77)\
**Post date:** [December 17, 2017, 3:12pm UTC](https://discuss.elastic.co/t/windows-node-joining-linux-master/112050/3 "2017-12-17T15:12:44Z")

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5.6.3. Regarding plugins, nothing additional installed. The Linux servers are running the docker image from Elastic. I am disabling x-pack when starting it up via docker.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [January 14, 2018, 3:12pm UTC](https://discuss.elastic.co/t/windows-node-joining-linux-master/112050/4 "2018-01-14T15:12:45Z")

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