50 lines
1.9 KiB
Plaintext
50 lines
1.9 KiB
Plaintext
[[setup-upgrade]]
|
|
= Upgrade {es}
|
|
|
|
[partintro]
|
|
--
|
|
{es} can usually be upgraded using a <<rolling-upgrades,Rolling upgrade>>
|
|
process so upgrading does not interrupt service. Rolling upgrades are supported:
|
|
|
|
* Between minor versions
|
|
* From 5.6 to 6.7
|
|
* From 6.7 to {version}
|
|
|
|
{es} can read indices created in the previous major version. If you
|
|
have indices created in 5.x or before, you must reindex or delete them
|
|
before upgrading to {version}. {es} nodes will fail to start if
|
|
incompatible indices are present. Snapshots of 5.x or earlier indices cannot be
|
|
restored to a 7.x cluster even if they were created by a 6.x cluster. For
|
|
information about upgrading old indices, see <<reindex-upgrade, Reindex to upgrade>>.
|
|
|
|
When upgrading to a new version of {es}, you need to upgrade each
|
|
of the products in your Elastic Stack. For more information, see the
|
|
{stack-ref}/upgrading-elastic-stack.html[Elastic Stack Installation and Upgrade Guide].
|
|
|
|
To upgrade directly to {version} from 6.6 or earlier, you must shut down the
|
|
cluster, install {version}, and restart. For more information, see
|
|
<<restart-upgrade, Full cluster restart upgrade>>.
|
|
|
|
[float]
|
|
== Preparing to upgrade
|
|
|
|
Before upgrading {es}:
|
|
|
|
. Check the <<deprecation-logging, deprecation log>> to see if you are using
|
|
any deprecated features and update your code accordingly. By default,
|
|
deprecation warnings are logged when the log level is set to `WARN`.
|
|
. Review the <<breaking-changes,breaking changes>> and make any necessary changes
|
|
to your code and configuration for {version}.
|
|
. If you use custom plugins, make sure compatible versions are available.
|
|
. Test upgrades in a dev environment before upgrading your production cluster.
|
|
. <<modules-snapshots,Back up your data!>> You must have a snapshot of your
|
|
data to roll back to an earlier version.
|
|
|
|
--
|
|
|
|
include::upgrade/rolling_upgrade.asciidoc[]
|
|
|
|
include::upgrade/cluster_restart.asciidoc[]
|
|
|
|
include::upgrade/reindex_upgrade.asciidoc[]
|