Rolling upgrade problem

#1

Hi, I'm trying to perform a rolling upgrade (5.6 to 6.6) on 3 nodes. I successfully upgraded the first node according to the instructions in: https://www.elastic.co/guide/en/elasticsearch/reference/current/rolling-upgrades.html

I also started the new version of kibana on that node (node 1).

Now, I'm trying to upgrade the next node. I see that it is shutdown, so i cant disable shard allocation on it.

When I try to directly start elasticsearch 6.6 on this node (using the SAME config as the prev node), i get this error:

[2019-03-14T15:03:23,618][WARN ][o.e.g.DanglingIndicesState] [vm-b4cc-2505.nam.nsroot.net] [[.watcher-history-6-2019.03.01/0ZnUwEH9Qjy3jA7StVyspw]] can not be imported as a dangling index, as index with same name already exists in cluster metadata
[2019-03-14T15:03:27,568][WARN ][o.e.g.DanglingIndicesState] [vm-b4cc-2505.nam.nsroot.net] [[.watcher-history-6-2019.03.01/0ZnUwEH9Qjy3jA7StVyspw]] can not be imported as a dangling index, as index with same name already exists in cluster metadata
Elasticsearch upgrade 6.6
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