Allow kibana_system user to manage .reindexed-v8-internal.alerts indices (#118959) (#119461)

* Adding reindexed alerts as data backing index prefixes

* Update docs/changelog/118959.yaml

* Update docs/changelog/118959.yaml

---------

Co-authored-by: Ersin Erdal <[email protected]>

Author: ymao1

docs/changelog/118959.yaml

@@ -0,0 +1,5 @@
+pr: 118959
+summary: Allow kibana_system user to manage .reindexed-v8-internal.alerts indices
+area: Authorization
+type: enhancement
+issues: []

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/security/authz/store/KibanaOwnedReservedRoleDescriptors.java

@@ -233,7 +233,10 @@ static RoleDescriptor kibanaSystem(String name) {
                 // Observability, etc.
                 // Kibana system user creates these indices; reads / writes to them via the
                 // aliases (see below).
-                RoleDescriptor.IndicesPrivileges.builder().indices(ReservedRolesStore.ALERTS_BACKING_INDEX).privileges("all").build(),
+                RoleDescriptor.IndicesPrivileges.builder()
+                    .indices(ReservedRolesStore.ALERTS_BACKING_INDEX, ReservedRolesStore.ALERTS_BACKING_INDEX_REINDEXED)
+                    .privileges("all")
+                    .build(),
                 // "Alerts as data" public index aliases used in Security Solution,
                 // Observability, etc.
                 // Kibana system user uses them to read / write alerts.
@@ -245,7 +248,7 @@ static RoleDescriptor kibanaSystem(String name) {
                 // Kibana system user creates these indices; reads / writes to them via the
                 // aliases (see below).
                 RoleDescriptor.IndicesPrivileges.builder()
-                    .indices(ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX_ALIAS)
+                    .indices(ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX, ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX_REINDEXED)
                     .privileges("all")
                     .build(),
                 // Endpoint / Fleet policy responses. Kibana requires read access to send

x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/security/authz/store/ReservedRolesStore.java

@@ -47,6 +47,7 @@ public class ReservedRolesStore implements BiConsumer<Set<String>, ActionListene
 
     /** Alerts, Rules, Cases (RAC) index used by multiple solutions */
     public static final String ALERTS_BACKING_INDEX = ".internal.alerts*";
+    public static final String ALERTS_BACKING_INDEX_REINDEXED = ".reindexed-v8-internal.alerts*";
 
     /** Alerts, Rules, Cases (RAC) index used by multiple solutions */
     public static final String ALERTS_INDEX_ALIAS = ".alerts*";
@@ -55,7 +56,8 @@ public class ReservedRolesStore implements BiConsumer<Set<String>, ActionListene
     public static final String PREVIEW_ALERTS_INDEX_ALIAS = ".preview.alerts*";
 
     /** Alerts, Rules, Cases (RAC) preview index used by multiple solutions */
-    public static final String PREVIEW_ALERTS_BACKING_INDEX_ALIAS = ".internal.preview.alerts*";
+    public static final String PREVIEW_ALERTS_BACKING_INDEX = ".internal.preview.alerts*";
+    public static final String PREVIEW_ALERTS_BACKING_INDEX_REINDEXED = ".reindexed-v8-internal.preview.alerts*";
 
     /** "Security Solutions" only lists index for value lists for detections */
     public static final String LISTS_INDEX = ".lists-*";
@@ -933,8 +935,10 @@ private static RoleDescriptor buildEditorRoleDescriptor() {
                 RoleDescriptor.IndicesPrivileges.builder()
                     .indices(
                         ReservedRolesStore.ALERTS_BACKING_INDEX,
+                        ReservedRolesStore.ALERTS_BACKING_INDEX_REINDEXED,
                         ReservedRolesStore.ALERTS_INDEX_ALIAS,
-                        ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX_ALIAS,
+                        ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX,
+                        ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX_REINDEXED,
                         ReservedRolesStore.PREVIEW_ALERTS_INDEX_ALIAS
                     )
                     .privileges("read", "view_index_metadata", "write", "maintenance")

x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/security/authz/store/ReservedRolesStoreTests.java

@@ -614,9 +614,11 @@ public void testKibanaSystemRole() {
             ".apm-source-map",
             ReservedRolesStore.ALERTS_LEGACY_INDEX + randomAlphaOfLength(randomIntBetween(0, 13)),
             ReservedRolesStore.ALERTS_BACKING_INDEX + randomAlphaOfLength(randomIntBetween(0, 13)),
+            ReservedRolesStore.ALERTS_BACKING_INDEX_REINDEXED + randomAlphaOfLength(randomIntBetween(0, 13)),
             ReservedRolesStore.ALERTS_INDEX_ALIAS + randomAlphaOfLength(randomIntBetween(0, 13)),
             ReservedRolesStore.PREVIEW_ALERTS_INDEX_ALIAS + randomAlphaOfLength(randomIntBetween(0, 13)),
-            ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX_ALIAS + randomAlphaOfLength(randomIntBetween(0, 13)),
+            ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX + randomAlphaOfLength(randomIntBetween(0, 13)),
+            ReservedRolesStore.PREVIEW_ALERTS_BACKING_INDEX_REINDEXED + randomAlphaOfLength(randomIntBetween(0, 13)),
             ReservedRolesStore.LISTS_INDEX + randomAlphaOfLength(randomIntBetween(0, 13)),
             ReservedRolesStore.LISTS_ITEMS_INDEX + randomAlphaOfLength(randomIntBetween(0, 13)),
             ".slo-observability." + randomAlphaOfLength(randomIntBetween(0, 13))