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[7.12] Document CCR auto-follow patterns and searchable snapshots indices #71320

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Apr 6, 2021
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[7.12] Document CCR auto-follow patterns and searchable snapshots indices #71320

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7 changes: 7 additions & 0 deletions docs/reference/ccr/auto-follow.asciidoc
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Expand Up @@ -7,6 +7,13 @@ each new index in the series is replicated automatically. Whenever the name of
a new index on the remote cluster matches the auto-follow pattern, a
corresponding follower index is added to the local cluster.

NOTE: Auto-follow patterns only match open indices on the remote cluster that
have all primary shards started. Auto-follow patterns do not match indices that
can't be used for {ccr-init} such as <<open-index-api-desc,closed indices>> or
<<searchable-snapshots,{search-snaps}>>. Avoid using an auto-follow pattern
that matches indices with a <<index-block-settings, read or write block>>. These
blocks prevent follower indices from replicating such indices.

You can also create auto-follow patterns for data streams. When a new backing
index is generated on a remote cluster, that index and its data stream are
automatically followed if the data stream name matches an auto-follow
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