I did a rolling upgrade on our 3 node ES cluster from 5.6.3 to 6.0.0. In this process 2/3 nodes were able to discover each other and the 3rd node is still not able to discover master, and the cluster state is red since then. Here are the settings for ES: cluster.name: "es-at-221b" network.host: 0.…

Cannot Discover Master Node after upgrade to ES 6.0.0

shreyask (Shreyas Karnik) November 16, 2017, 10:31pm 3

Yes I did. It was a fresh docker image for 6.0.0 on top of which ran bin/elasticsearch-plugin install --batch discovery-ec2 to get the latest discovery plugin.

[Solved] Discovery_ec2 with ES 6.3.2 not finding other nodes

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