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Add CCS based reindex in doc page #117154

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docs: add CCS based reindex to docs
atsushi-matsui Nov 20, 2024
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atsushi-matsui Nov 24, 2024
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atsushi-matsui Nov 24, 2024
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atsushi-matsui Nov 24, 2024
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atsushi-matsui Nov 28, 2024
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Merge branch 'main' into feature/docs/add-css-based-reindex-to-docs
leemthompo Jan 29, 2025
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27 changes: 27 additions & 0 deletions docs/reference/docs/reindex.asciidoc
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Expand Up @@ -98,6 +98,9 @@ privilege for the source data stream, index, or alias.
in the `reindex.remote.whitelist` setting of `elasticsearch.yml`. See
<<reindex-from-remote>>.

* If ccs-based reindexing from a remote cluster, you must add the remote cluster setting. See
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* If ccs-based reindexing from a remote cluster, you must add the remote cluster setting. See
* If reindexing from a remote cluster, you must add the remote cluster setting. See

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Since it looks like a condition for performing an existing reindex, I think it would be better to give it a different name to avoid confusing users.

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Yes I agree that we should keep the terminology to "ccs-based reindexing" to distinguish this from the pre-existing functionality of reindexing from a remote cluster.

<<add-remote-clusters>>.

* Automatic data stream creation requires a matching index template with data
stream enabled. See <<set-up-a-data-stream>>.

Expand Down Expand Up @@ -1125,6 +1128,30 @@ POST _reindex
// TEST[s/otherhost:9200/\${host}/]
// TEST[s/\.\.\.,/"username": "test_admin", "password": "x-pack-test-password",/]

[[ccs-based-reindex-from-remote]]
==== ccs based reindex from remote

Reindex supports Cross-cluster search (<<modules-cross-cluster-search,{ccs}>>) based reindexing from a remote Elasticsearch cluster:
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[[ccs-based-reindex-from-remote]]
==== ccs based reindex from remote
Reindex supports Cross-cluster search (<<modules-cross-cluster-search,{ccs}>>) based reindexing from a remote Elasticsearch cluster:
[[reindex-from-remote-cluster]]
==== reindex from remote cluster
Reindex supports sourcing documents from a remote Elasticsearch cluster:

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Since a section named reindex-from-remote already exists, won't it be difficult to understand what the difference is with reindex-from-remote-cluster?
You said that ccs is a low-level feature and we don't need to worry about it too much, but I think it would be better to clarify the difference with the existing remote reindex.


[source,console]
--------------------------------------------------
POST _reindex
{
"source": {
"index": "cluster_one:my-index-000001"
},
"dest": {
"index": "my-new-index-000001"
}
}
--------------------------------------------------
// TEST[setup:my_index_big]

The `index` parameter must be specified with the remote cluster name and the index name, separated by
a colon (e.g., cluster_one:my-index-000001).

NOTE: Reindexing requires that the remote cluster be configured on the local cluster.

[[reindex-ssl]]
===== Configuring SSL parameters

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