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[8.0] [DOCS] Organize breaking changes by component (#79162) #80723

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6 changes: 3 additions & 3 deletions docs/reference/migration/index.asciidoc
Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
[[breaking-changes]]
= Migration guide

[partintro]
--
:ess-setting-change: {ess-icon} indicates a change to a supported {cloud}/ec-add-user-settings.html[user setting] for {ess}.
:ess-skip-section: If you use {ess}, skip this section. {ess} handles these changes for you.

This section discusses the changes that you need to be aware of to migrate
your application to {version}. For more information about what's new in this
release, see the <<release-highlights>> and <<es-release-notes>>.
Expand Down Expand Up @@ -37,5 +38,4 @@ For information about how to upgrade your cluster, see <<setup-upgrade>>.

* <<migrating-8.0,Migrating to 8.0>>

--
include::migrate_8_0.asciidoc[]
162 changes: 42 additions & 120 deletions docs/reference/migration/migrate_8_0.asciidoc
Original file line number Diff line number Diff line change
Expand Up @@ -9,38 +9,7 @@ your application to {es} 8.0.

See also <<release-highlights>> and <<es-release-notes>>.

coming[8.0.0]

* <<breaking_80_aggregations_changes>>
* <<breaking_80_allocation_changes>>
* <<breaking_80_analysis_changes>>
* <<breaking_80_breaker_changes>>
* <<breaking_80_cluster_changes>>
* <<breaking_80_ccr_changes>>
* <<breaking_80_discovery_changes>>
* <<breaking_80_eql_changes>>
* <<breaking_80_http_changes>>
* <<breaking_80_ilm_changes>>
* <<breaking_80_indices_changes>>
* <<breaking_80_ingest_changes>>
* <<breaking_80_java_changes>>
* <<breaking_80_logging_changes>>
* <<breaking_80_mappings_changes>>
* <<breaking_80_network_changes>>
* <<breaking_80_node_changes>>
* <<breaking_80_packaging_changes>>
* <<breaking_80_reindex_changes>>
* <<breaking_80_api_changes>>
* <<breaking_80_rollup_changes>>
* <<breaking_80_scripting_changes>>
* <<breaking_80_search_changes>>
* <<breaking_80_security_changes>>
* <<breaking_80_settings_changes>>
* <<breaking_80_snapshots_changes>>
* <<breaking_80_threadpool_changes>>
* <<breaking_80_transform_changes>>
* <<breaking_80_transport_changes>>
* <<breaking_80_watcher_changes>>
coming::[8.0.0]

[discrete]
[[breaking-changes-8.0]]
Expand All @@ -58,93 +27,18 @@ the old behavior is supported until the next major release.
To find out if you are using any deprecated functionality,
enable <<deprecation-logging, deprecation logging>>.

//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide

//tag::notable-breaking-changes[]

.Indices created in {es} 6.x and earlier versions are not supported.
[%collapsible]
====
*Details* +
Elasticsearch 8.0 can read indices created in version 7.0 or above. An
Elasticsearch 8.0 node will not start in the presence of indices created in a
version of Elasticsearch before 7.0.

*Impact* +
Reindex indices created in {es} 6.x or before with {es} 7.x if they need to be carried forward to {es} 8.x.
====

.REST API endpoints containing `_xpack` have been removed.
[%collapsible]
====
*Details* +
In 7.0, we deprecated REST endpoints that contain `_xpack` in their path. These
endpoints are now removed in 8.0. Each endpoint that was deprecated and removed
is replaced with a new endpoint that does not contain `_xpack`. As an example,
`/{index}/_xpack/graph/_explore` is replaced by `/{index}/_graph/explore`.

*Impact* +
Use the replacement REST API endpoints. Requests submitted to the `_xpack`
API endpoints will return an error.
====

.Several EOL operating systems are no longer supported.
[%collapsible]
====
*Details* +
The following operating systems have reached their end of life and are no longer
supported by {es}:

* Amazon Linux
* CentOS 6
* Debian 8
* openSUSE Leap 42
* Oracle Enterprise Linux 6
* Ubuntu 16.04

We've also removed support for `SysV init`. No supported operating systems use
the `SysV init` process.

*Details* +
Ensure your nodes use a
https://www.elastic.co/support/matrix#matrix_os[supported operating system].
Running {es} on an unsupported operating system can result in unexpected errors
or failures.
====

// end::notable-breaking-changes[]

include::migrate_8_0/aggregations.asciidoc[]
include::migrate_8_0/allocation.asciidoc[]
include::migrate_8_0/analysis.asciidoc[]
include::migrate_8_0/breaker.asciidoc[]
include::migrate_8_0/cluster.asciidoc[]
include::migrate_8_0/ccr.asciidoc[]
include::migrate_8_0/discovery.asciidoc[]
include::migrate_8_0/eql.asciidoc[]
include::migrate_8_0/http.asciidoc[]
include::migrate_8_0/ilm.asciidoc[]
include::migrate_8_0/indices.asciidoc[]
include::migrate_8_0/ingest.asciidoc[]
include::migrate_8_0/java.asciidoc[]
include::migrate_8_0/logging.asciidoc[]
include::migrate_8_0/mappings.asciidoc[]
include::migrate_8_0/network.asciidoc[]
include::migrate_8_0/node.asciidoc[]
include::migrate_8_0/packaging.asciidoc[]
include::migrate_8_0/reindex.asciidoc[]
include::migrate_8_0/api.asciidoc[]
include::migrate_8_0/rollup.asciidoc[]
include::migrate_8_0/scripting.asciidoc[]
include::migrate_8_0/search.asciidoc[]
include::migrate_8_0/security.asciidoc[]
include::migrate_8_0/settings.asciidoc[]
include::migrate_8_0/snapshots.asciidoc[]
include::migrate_8_0/threadpool.asciidoc[]
include::migrate_8_0/_cluster-node-setting-changes.asciidoc[]
include::migrate_8_0/_command-line-tool-changes.asciidoc[]
include::migrate_8_0/_index-setting-changes.asciidoc[]
include::migrate_8_0/_java-api-changes.asciidoc[]
include::migrate_8_0/_jvm-option-changes.asciidoc[]
include::migrate_8_0/_logging-changes.asciidoc[]
include::migrate_8_0/_mapping-changes.asciidoc[]
include::migrate_8_0/_packaging-changes.asciidoc[]
include::migrate_8_0/_painless-changes.asciidoc[]
include::migrate_8_0/_rest-api-changes.asciidoc[]
include::migrate_8_0/_system-req-changes.asciidoc[]
include::migrate_8_0/transform.asciidoc[]
include::migrate_8_0/transport.asciidoc[]
include::migrate_8_0/watcher.asciidoc[]

[discrete]
[[deprecated-8.0]]
Expand All @@ -161,9 +55,12 @@ the old behavior is supported until the next major release.
To find out if you are using any deprecated functionality,
enable <<deprecation-logging, deprecation logging>>.

//NOTE: The notable-breaking-changes tagged regions are re-used in the
//Installation and Upgrade Guide
//tag::notable-breaking-changes[]
[discrete]
[[breaking_80_settings_deprecations]]
==== Settings deprecations
[[breaking_80_cluster_node_setting_deprecations]]
==== Cluster and node setting deprecations

[[deprecate-transient-cluster-settings]]
.Transient cluster settings are deprecated.
Expand All @@ -183,6 +80,31 @@ settings instead. See the
{ref}/transient-settings-migration-guide.html[Transient settings migration
guide].
====
//end::notable-breaking-changes[]

[discrete]
[[breaking_80_command_line_tool_deprecations]]
==== Command line tool deprecations

TIP: {ess-skip-section}

[[deprecate-elasticsearch-setup-passwords]]
.The `elasticsearch-setup-passwords` tool is deprecated.
[%collapsible]
====
*Details* +
The `elasticsearch-setup-passwords` tool is deprecated in 8.0. To
manually reset the password for built-in users (including the `elastic` user), use
the {ref}/reset-password.html[`elasticsearch-reset-password`] tool, the {es}
{ref}/security-api-change-password.html[change passwords API], or the
User Management features in {kib}.
`elasticsearch-setup-passwords` will be removed in a future release.

*Impact* +
Passwords are generated automatically for the `elastic` user when you start {es} for the first time. If you run `elasticsearch-setup-passwords` after
starting {es}, it will fail because the `elastic`
user password is already configured.
====

include::migrate_8_0/migrate_to_java_time.asciidoc[]
include::transient-settings-migration-guide.asciidoc[]
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