We are planning on upgrade from 0.90.5 to 0.90.10 in our live environment. Prior to that we want to do the same in the test environment. Please find below the environment, upgrade steps and post upgrade issue detail
Environment: - Master Only (no data node) - 3 - data only nodes - 3 - version 0.90.5 Upgrade step Not planning to have any down time and so followed the under mentioned steps while having the cluster up and running - upgraded the data nodes to 0.90.10 one by one - upgraded the eligible master nodes to 0.90.10 one by one - upgraded the master node to 0.90.10 The upgrade was successful without any impact to the application. Post upgrade, the following issue keeps occurring On accessing the plugin head url, there will be no data beyond the cluster overview section (no index, nodes, shard details). But if you access the browser tab, the index does exist. Also I see the following error [2014-02-04 22:40:15,518][DEBUG][action.admin.cluster.node.info] [ppmn-elastic01-21947.phx-os1.stratus.dev.ebay.com] failed to execute on node [ict1HABCQC-wGK3VvIHhXA] org.elasticsearch.transport.NodeDisconnectedException: [es-upgrade-0.90.10-3-163533.phx-os1.stratus.dev.ebay.com][inet[/10.9.218.139:9300]][cluster/nodes/info/n] disconnected. On restarting the data node with this issue, the cluster will come back normally. But after a while the same issue happens. Any pointers? Thanks Venkatesh Connectes-upgrade-0.90.10-161885.phx-os1.stratus.dev.ebay.comcluster health: green (6, 1)ElasticSearch Info Overview Browser Structured Query [+] Any Request [+] Cluster Overview New Index Sort Cluster Refresh -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/65d81f33-678f-4233-89a0-8c6e5dfe2ff4%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.