mirror of
https://github.com/elastic/elasticsearch.git
synced 2025-04-25 07:37:19 -04:00
2f03112b5b
This moves the bulk of the upgrade information into the consolidated upgrade guide, but leaves the primary upgrade topic in place as a cross reference.
Relates to: https://github.com/elastic/stack-docs/pull/1970
Co-authored-by: gchaps <33642766+gchaps@users.noreply.github.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
Co-authored-by: James Rodewig <40268737+jrodewig@users.noreply.github.com>
(cherry picked from commit f6473d71f9)
Co-authored-by: debadair <debadair@elastic.co>
42 lines
1.6 KiB
Text
42 lines
1.6 KiB
Text
[[setup-upgrade]]
|
|
= Upgrade {es}
|
|
|
|
{es} clusters can usually be upgraded one node at a time so
|
|
upgrading does not interrupt service. To upgrade to 8.0 or later,
|
|
**you must first upgrade to {prev-major-last}**, even if you opt to
|
|
do a full-cluster restart instead of a rolling upgrade.
|
|
|
|
This enables you to use the **Upgrade Assistant** to identify and resolve issues,
|
|
reindex indices created before 7.0, and then perform a rolling upgrade.
|
|
|
|
You must resolve all critical issues before proceeding with the upgrade.
|
|
|
|
For upgrade instructions, see {stack-ref}/upgrading-elastic-stack.html[Upgrading to Elastic {version}].
|
|
|
|
[discrete]
|
|
[[upgrade-index-compatibility]]
|
|
=== Index compatibility
|
|
|
|
{es} can read indices created in the previous major version. If you
|
|
have indices created in 6.x or earlier, you must reindex or delete them
|
|
before upgrading to {version}. {es} nodes will fail to start if
|
|
incompatible indices are present. Snapshots of 6.x or earlier indices cannot be
|
|
restored to a 8.x cluster even if they were created by a 7.x cluster.
|
|
The **Upgrade Assistant** in {prev-major-last} identifies any indices
|
|
that need to be reindexed or removed.
|
|
|
|
[discrete]
|
|
[[upgrade-rest-api-compatibility]]
|
|
=== REST API compatibility
|
|
|
|
REST API compatibility in a per-request opt-in feature that can help REST clients
|
|
mitigate non compatible (breaking) changes to the REST API.
|
|
See <<rest-api-compatibility>> for additional information.
|
|
|
|
[discrete]
|
|
[[upgrade-fips-java17]]
|
|
=== FIPS Compliance and Java 17
|
|
|
|
include::{xes-repo-dir}/security/fips-java17.asciidoc[]
|
|
|
|
include::upgrade/archived-settings.asciidoc[]
|