[DOCS] Merges duplicate pages for native realms (elastic#49198)

Author: lcawl

docs/reference/redirects.asciidoc

@@ -906,3 +906,13 @@ See <<docker-cli-run-dev-mode>>.
 
 See <<analysis-dict-decomp-tokenfilter>> and
 <<analysis-hyp-decomp-tokenfilter>>.
+
+[role="exclude",id="configuring-native-realm"]
+=== Configuring a native realm
+
+See <<native-realm-configuration>>.
+
+[role="exclude",id="native-settings"]
+==== Native realm settings
+
+See <<ref-native-settings>>. 

x-pack/docs/en/rest-api/security/change-password.asciidoc

@@ -28,7 +28,7 @@ You can use the <<security-api-put-user,create user API>> to update everything
 but a user's `username` and `password`. This API changes a user's password.
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 
 [[security-api-change-password-path-params]]

x-pack/docs/en/rest-api/security/clear-roles-cache.asciidoc

@@ -22,7 +22,7 @@ privilege.
 ==== {api-description-title}
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 [[security-api-clear-role-cache-path-params]]
 ==== {api-path-parms-title}

x-pack/docs/en/rest-api/security/create-users.asciidoc

@@ -31,7 +31,7 @@ To change a user's password, use the
 <<security-api-change-password, change password API>>.
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 [[security-api-put-user-path-params]]
 ==== {api-path-parms-title}

x-pack/docs/en/rest-api/security/delete-users.asciidoc

@@ -21,7 +21,7 @@ Deletes users from the native realm.
 ==== {api-description-title}
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 [[security-api-delete-user-path-params]]
 ==== {api-path-parms-title}

x-pack/docs/en/rest-api/security/disable-users.asciidoc

@@ -27,7 +27,7 @@ revoke a user's access to {es}. To re-enable a user, there is an
 <<security-api-enable-user,enable users API>>. 
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 [[security-api-disable-user-path-params]]
 ==== {api-path-parms-title}

x-pack/docs/en/rest-api/security/enable-users.asciidoc

@@ -26,7 +26,7 @@ By default, when you create users, they are enabled. You can use this enable
 users API and the <<security-api-disable-user,disable users API>> to change that attribute. 
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 [[security-api-enable-user-path-params]]
 ==== {api-path-parms-title}

x-pack/docs/en/rest-api/security/get-users.asciidoc

@@ -25,7 +25,7 @@ Retrieves information about users in the native realm and built-in users.
 ==== {api-description-title}
 
 For more information about the native realm, see 
-<<realms>> and <<configuring-native-realm>>. 
+<<realms>> and <<native-realm>>. 
 
 [[security-api-get-user-path-params]]
 ==== {api-path-parms-title}

x-pack/docs/en/security/authentication/configuring-native-realm.asciidoc

@@ -1,10 +1,3 @@
-[role="xpack"]
-[[configuring-native-realm]]
-=== Configuring a native realm
-
-The easiest way to manage and authenticate users is with the internal `native`
-realm. 
-
 The native realm is available by default when no other realms are 
 configured. If other realm settings have been configured in `elasticsearch.yml`, 
 you must add the native realm to the realm chain.
@@ -45,6 +38,3 @@ hash algorithm. To use different hash algorithms, see <<hashing-settings>>.
 
 . Restart {es}.
 
-. Manage your users in {kib} on the *Management / Security / Users* page. 
-Alternatively, use the <<security-api-users,User Management APIs>>.
-

x-pack/docs/en/security/authentication/native-realm.asciidoc

@@ -7,15 +7,9 @@ realm. You can use the REST APIs or Kibana to add and remove users, assign user
 roles, and manage user passwords.
 
 [[native-realm-configuration]]
-[float]
 ==== Configuring a native realm
 
-See {ref}/configuring-native-realm.html[Configuring a native realm]. 
-
-[[native-settings]]
-==== Native realm settings
-
-See {ref}/security-settings.html#ref-native-settings[Native realm settings]. 
+include::configuring-native-realm.asciidoc[]
 
 [[managing-native-users]]
 ==== Managing native users
@@ -24,9 +18,8 @@ The {stack} {security-features} enable you to easily manage users in {kib} on th
 *Management / Security / Users* page. 
 
 Alternatively, you can manage users through the `user` API. For more 
-information and examples, see
-{ref}/security-api.html#security-user-apis[user management APIs].
+information and examples, see <<security-user-apis>>.
 
 [[migrating-from-file]]
 NOTE: To migrate file-based users to the `native` realm, use the
-{ref}/migrate-tool.html[migrate tool].
+<<migrate-tool,migrate tool>>.