Rename ILM history index enablement setting (#51698)

* Rename ILM history index enablement setting

The previous setting was `index.lifecycle.history_index_enabled`, this commit changes it to
`indices.lifecycle.history_index_enabled` to indicate this is not an index-level setting (it's node
level).

client/rest-high-level/build.gradle

@@ -138,7 +138,7 @@ testClusters.all {
   setting 'xpack.security.authc.realms.pki.pki1.delegation.enabled', 'true'
 
   setting 'indices.lifecycle.poll_interval', '1000ms'
-  setting 'index.lifecycle.history_index_enabled', 'false'
+  setting 'indices.lifecycle.history_index_enabled', 'false'
   keystore 'xpack.security.transport.ssl.truststore.secure_password', 'testnode'
   extraConfigFile 'roles.yml', file('roles.yml')
   user username: System.getProperty('tests.rest.cluster.username', 'test_user'),

docs/build.gradle

@@ -44,6 +44,7 @@ buildRestTests.expectedUnconvertedCandidates = [
 testClusters.integTest {
   if (singleNode().testDistribution == DEFAULT) {
     setting 'xpack.license.self_generated.type', 'trial'
+    setting 'indices.lifecycle.history_index_enabled', 'false'
     if (BuildParams.isSnapshotBuild()) {
       setting 'xpack.autoscaling.enabled', 'true'
       setting 'xpack.eql.enabled', 'true'
@@ -67,7 +68,6 @@ testClusters.integTest {
   extraConfigFile 'hunspell/en_US/en_US.dic', project(":server").file('src/test/resources/indices/analyze/conf_dir/hunspell/en_US/en_US.dic')
   // Whitelist reindexing from the local node so we can test it.
   setting 'reindex.remote.whitelist', '127.0.0.1:*'
-  setting 'index.lifecycle.history_index_enabled', 'false'
 
   // TODO: remove this once cname is prepended to transport.publish_address by default in 8.0
   systemProperty 'es.transport.cname_in_publish_address', 'true'

docs/reference/settings/ilm-settings.asciidoc

@@ -14,7 +14,7 @@ ILM REST API endpoints and functionality. Defaults to `true`.
 (<<time-units, time units>>) How often {ilm} checks for indices that meet policy
 criteria. Defaults to `10m`.
 
-`index.lifecycle.history_index_enabled`::
+`indices.lifecycle.history_index_enabled`::
 Whether ILM's history index is enabled. If enabled, ILM will record the
 history of actions taken as part of ILM policies to the `ilm-history-*`
 indices. Defaults to `true`.

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/ilm/LifecycleSettings.java

@@ -19,7 +19,7 @@ public class LifecycleSettings {
     public static final String LIFECYCLE_INDEXING_COMPLETE = "index.lifecycle.indexing_complete";
     public static final String LIFECYCLE_ORIGINATION_DATE = "index.lifecycle.origination_date";
     public static final String LIFECYCLE_PARSE_ORIGINATION_DATE = "index.lifecycle.parse_origination_date";
-    public static final String LIFECYCLE_HISTORY_INDEX_ENABLED = "index.lifecycle.history_index_enabled";
+    public static final String LIFECYCLE_HISTORY_INDEX_ENABLED = "indices.lifecycle.history_index_enabled";
     public static final String LIFECYCLE_STEP_MASTER_TIMEOUT = "index.lifecycle.step.master_timeout";
 
     public static final String SLM_HISTORY_INDEX_ENABLED = "slm.history_index_enabled";

x-pack/plugin/monitoring/src/test/java/org/elasticsearch/xpack/monitoring/test/MonitoringIntegTestCase.java

@@ -54,7 +54,7 @@ public abstract class MonitoringIntegTestCase extends ESIntegTestCase {
 //                .put(MachineLearningField.AUTODETECT_PROCESS.getKey(), false)
 //                .put(XPackSettings.MACHINE_LEARNING_ENABLED.getKey(), false)
                 // we do this by default in core, but for monitoring this isn't needed and only adds noise.
-                .put("index.lifecycle.history_index_enabled", false)
+                .put("indices.lifecycle.history_index_enabled", false)
                 .put("index.store.mock.check_index_on_close", false);
 
         return builder.build();

x-pack/plugin/watcher/src/test/java/org/elasticsearch/xpack/watcher/test/AbstractWatcherIntegrationTestCase.java

@@ -115,7 +115,7 @@ public abstract class AbstractWatcherIntegrationTestCase extends ESIntegTestCase
                 // watcher settings that should work despite randomization
                 .put("xpack.watcher.execution.scroll.size", randomIntBetween(1, 100))
                 .put("xpack.watcher.watch.scroll.size", randomIntBetween(1, 100))
-                .put("index.lifecycle.history_index_enabled", false)
+                .put("indices.lifecycle.history_index_enabled", false)
                 // SLM can cause timing issues during testsuite teardown: https://github.com/elastic/elasticsearch/issues/50302
                 // SLM is not required for tests extending from this base class and only add noise.
                 .put("xpack.slm.enabled", false)