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[DOCS] Multiple clusters connected to the same repository (#23807)

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Ali Beyad 2017-03-30 13:08:41 -04:00 committed by GitHub
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docs/reference/modules/snapshots.asciidoc
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@ -16,6 +16,19 @@ a 2.x cluster and use <<reindex-from-remote,reindex-from-remote>> to rebuild
the index in a 5.x cluster. This is as time consuming as restoring from
archival copies of the original data.
Note: If a repository is connected to a 2.x cluster, and you want to connect
a 5.x cluster to the same repository, you will have to either first set the 2.x
repository to `readonly` mode (see below for details on `readonly` mode) or create
the 5.x repository in `readonly` mode. A 5.x cluster will update the repository
to conform to 5.x specific formats, which will mean that any new snapshots written
via the 2.x cluster will not be visible to the 5.x cluster, and vice versa.
In fact, as a general rule, only one cluster should connect to the same repository
location with write access; all other clusters connected to the same repository
should be set to `readonly` mode. While setting all but one repositories to
`readonly` should work with multiple clusters differing by one major version,
it is not a supported configuration.
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=== Repositories