Add setting and component templates

docs/reference/indices/put-component-template.asciidoc

@@ -85,7 +85,29 @@ except before the opening curly bracket.
 `<component-template>`::
 (Required, string)
 Name of the component template to create.
-
++
+[IMPORTANT]
+====
+{es} includes the following built-in component templates:
+
+// tag::built-in-component-templates[]
+- `logs-mappings`
+- `logs-settings`
+- `metrics-mappings`
+- `metrics-settings`
+- `synthetics-mapping`
+- `synthetics-settings`
+// end::built-in-component-templates[]
+
+The {fleet-guide}/fleet-overview.html[{agent}] uses these templates to configure
+backing indices for its data streams. If you use {agent} and want to overwrite
+one of these templates, set the `version` for your replacement template higher
+than the current version.
+
+If you don't use {agent} and want to disable all built-in component and index
+templates, set <<stack-templates-enabled,`stack.templates.enabled`>> to `false`
+in <<config-files-location,`elasticsearch.yml`>>.
+====
 
 [[put-component-template-api-query-params]]
 ==== {api-query-parms-title}

docs/reference/modules/indices/index_management.asciidoc

@@ -32,3 +32,22 @@ IMPORTANT: Closed indices are a data loss risk because they are not included whe
 (<<static-cluster-setting,Static>>)
 Specifies the hosts that can be <<reindex-from-remote,reindexed from remotely>>. Expects a YAML array of `host:port` strings. Consists of a comma-delimited list of `host:port` entries. Defaults to `["\*.io:*", "\*.com:*"]`.
 // end::reindex-remote-whitelist[]
+
+[[stack-templates-enabled]]
+`stack.templates.enabled` {ess-icon}::
++
+--
+(<<static-cluster-setting,Static>>)
+If `true`, enables built-in index and component templates. The
+{fleet-guide}/fleet-overview.html[{agent}] uses these templates to create data
+streams. If `false`, {es} disables these index and component templates. Defaults
+to `true`.
+
+This setting affects the following built-in index templates:
+
+include::{es-repo-dir}/indices/index-templates.asciidoc[tag=built-in-index-template-patterns]
+
+This setting also affects the following built-in component templates:
+
+include::{es-repo-dir}/indices/put-component-template.asciidoc[tag=built-in-component-templates]
+--