10846cb361
* [DOCS] Updates Management docs to match UI * [DOCS] Incorporates review comments Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
73 lines
3.1 KiB
Text
73 lines
3.1 KiB
Text
[role="xpack"]
|
|
[[managing-cross-cluster-replication]]
|
|
== Cross-Cluster Replication
|
|
|
|
Use *Cross-Cluster Replication* to reproduce indices in
|
|
remote clusters on a local cluster. {ref}/xpack-ccr.html[Cross-cluster replication]
|
|
is commonly used to provide remote backups for disaster recovery and for
|
|
geo-proximite copies of data.
|
|
|
|
To get started, open the menu, then go to *Stack Management > Data > Cross-Cluster Replication*.
|
|
|
|
[role="screenshot"]
|
|
image::images/cross-cluster-replication-list-view.png[][Cross-cluster replication list view]
|
|
|
|
[float]
|
|
=== Prerequisites
|
|
|
|
* You must have a {ref}/modules-remote-clusters.html[remote cluster].
|
|
* Leader indices must meet {ref}/ccr-requirements.html[these requirements].
|
|
* The Elasticsearch version of the local cluster must be the same as or newer than the remote cluster.
|
|
Refer to {ref}/ccr-overview.html[this document] for more information.
|
|
|
|
[float]
|
|
[[configure-replication]]
|
|
=== Configure replication
|
|
|
|
Replication requires a leader index, the index being replicated, and a
|
|
follower index, which will contain the leader index's replicated data.
|
|
The follower index is passive in that it can read requests and searches,
|
|
but cannot accept direct writes. Only the leader index is active for direct writes.
|
|
|
|
You can configure follower indices in two ways:
|
|
|
|
* Create specific follower indices
|
|
* Create follower indices from an auto-follow pattern
|
|
|
|
[float]
|
|
==== Create specific follower indices
|
|
|
|
To replicate data from existing indices, or set up local followers on a case-by-case basis,
|
|
go to *Follower indices*. When you create the follower index, you must reference the
|
|
remote cluster and the leader index that you created in the remote cluster.
|
|
|
|
[role="screenshot"]
|
|
image::images/follower_indices.png[][UI for adding follower indices]
|
|
|
|
[float]
|
|
==== Create follower indices from an auto-follow pattern
|
|
|
|
To automatically detect and follow new indices when they are created on a remote cluster,
|
|
go to *Auto-follow patterns*. Creating an auto-follow pattern is useful when you have
|
|
time series data, like event logs, on the remote cluster that is created or rolled over on a daily basis.
|
|
|
|
When creating the pattern, you must reference the remote cluster that you
|
|
connected to your local cluster. You must also specify a collection of index patterns
|
|
that match the indices you want to automatically follow.
|
|
|
|
Once you configure an
|
|
auto-follow pattern, any time a new index with a name that matches the pattern is
|
|
created in the remote cluster, a follower index is automatically configured in the local cluster.
|
|
|
|
[role="screenshot"]
|
|
image::images/auto_follow_pattern.png[UI for adding an auto-follow pattern]
|
|
|
|
[float]
|
|
[[manage-replication]]
|
|
=== Manage replication
|
|
|
|
Use the list views in *Cross-Cluster Replication* to monitor whether the replication is active and
|
|
pause and resume replication. You can also edit and remove the follower indices and auto-follow patterns.
|
|
|
|
For an example of cross-cluster replication,
|
|
refer to https://www.elastic.co/blog/bi-directional-replication-with-elasticsearch-cross-cluster-replication-ccr[Bi-directional replication with Elasticsearch cross-cluster replication].
|