elasticsearch/docs/reference/migration/migrate_8_0/settings.asciidoc

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[[breaking_80_settings_changes]]
=== Settings changes

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[[search-remote-settings-removed]]
==== The `search.remote` settings have been removed

In 6.5 these settings were deprecated in favor of `cluster.remote`. In 7.x we
provided automatic upgrading of these settings to their `cluster.remote`
counterparts. In 8.0.0, these settings have been removed. Elasticsearch will
refuse to start if you have these settings in your configuration or cluster
state.

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[[remove-pidfile]]
==== `pidfile` setting is replaced by `node.pidfile`

To ensure that all settings are in a proper namespace, the `pidfile` setting was
previously deprecated in version 7.4.0 of Elasticsearch, and is removed in
version 8.0.0. Instead, use `node.pidfile`.

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[[remove-processors]]
==== `processors` setting is replaced by `node.processors`

To ensure that all settings are in a proper namespace, the `processors` setting
was previously deprecated in version 7.4.0 of Elasticsearch, and is removed in
version 8.0.0. Instead, use `node.processors`.

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==== `node.processors` can no longer exceed the available number of processors

Previously it was possible to set the number of processors used to set the
default sizes for the thread pools to be more than the number of available
processors. As this leads to more context switches and more threads but without
an increase in the number of physical CPUs on which to schedule these additional
threads, the `node.processors` setting is now bounded by the number of available
processors.

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==== `cluster.remote.connect` is removed

In Elasticsearch 7.7.0, the setting `cluster.remote.connect` was deprecated in
favor of setting `node.remote_cluster_client`. In Elasticsearch 8.0.0, the
setting `cluster.remote.connect` is removed.

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==== `node.local_storage` is removed

In Elasticsearch 7.8.0, the setting `node.local_storage` was deprecated and
beginning in Elasticsearch 8.0.0 all nodes will require local storage. Therefore,
the `node.local_storage` setting has been removed.

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==== `auth.password` for HTTP monitoring is removed

In Elasticsearch 7.7.0, the setting `xpack.monitoring.exporters.<exporterName>.auth.password`
was deprecated in favor of setting `xpack.monitoring.exporters.<exporterName>.auth.secure_password`.
In Elasticsearch 8.0.0, the setting `xpack.monitoring.exporters.<exporterName>.auth.password` is
removed.

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==== Option to disable basic license features is deprecated

In Elasticsearch 7.8.0, the following settings have been deprecated:

* `xpack.enrich.enabled`
* `xpack.flattened.enabled`
* `xpack.ilm.enabled`
* `xpack.monitoring.enabled`
* `xpack.rollup.enabled`
* `xpack.slm.enabled`
* `xpack.sql.enabled`
* `xpack.transform.enabled`
* `xpack.vectors.enabled`

In future releases, it will not be possible to disable the APIs for Enrichment,
Flattened mappings, ILM, Monitoring, Rollup, SLM, SQL, Transforms, and Vectors.