[Fleet] Disable ILM policy in serverless (#154460)

config/serverless.yml

@@ -1 +1,2 @@
 xpack.fleet.enableExperimental: ['fleetServerStandalone']
+xpack.fleet.internal.ILMPoliciesDisabled: true

x-pack/plugins/fleet/common/types/index.ts

@@ -44,6 +44,9 @@ export interface FleetConfigType {
     disableRegistryVersionCheck?: boolean;
     bundledPackageLocation?: string;
   };
+  internal?: {
+    disableILMPolicies: boolean;
+  };
 }
 
 // Calling Object.entries(PackagesGroupedByStatus) gave `status: string`

x-pack/plugins/fleet/server/config.ts

@@ -158,6 +158,14 @@ export const config: PluginConfigDescriptor = {
         }
       },
     }),
+
+    internal: schema.maybe(
+      schema.object({
+        disableILMPolicies: schema.boolean({
+          defaultValue: false,
+        }),
+      })
+    ),
   }),
 };
 

x-pack/plugins/fleet/server/services/epm/elasticsearch/template/default_settings.ts

@@ -61,12 +61,18 @@ export function buildDefaultSettings({
       : defaultFields
   ).map((field) => field.name);
 
+  const isILMPolicyDisabled = appContextService.getConfig()?.internal?.disableILMPolicies ?? false;
+
   return {
     index: {
-      // ILM Policy must be added here, for now point to the default global ILM policy name
-      lifecycle: {
-        name: ilmPolicy ? ilmPolicy : type,
-      },
+      ...(isILMPolicyDisabled
+        ? {}
+        : {
+            // ILM Policy must be added here, for now point to the default global ILM policy name
+            lifecycle: {
+              name: ilmPolicy ? ilmPolicy : type,
+            },
+          }),
       // What should be our default for the compression?
       codec: 'best_compression',
       // All the default fields which should be queried have to be added here.

x-pack/plugins/fleet/server/services/epm/packages/_install_package.test.ts

@@ -8,11 +8,13 @@
 import type { SavedObjectsClientContract, ElasticsearchClient } from '@kbn/core/server';
 import { savedObjectsClientMock, elasticsearchServiceMock } from '@kbn/core/server/mocks';
 import { loggerMock } from '@kbn/logging-mocks';
-
 import { DEFAULT_SPACE_ID } from '@kbn/spaces-plugin/common/constants';
 
 import { appContextService } from '../../app_context';
 import { createAppContextStartContractMock } from '../../../mocks';
+import { saveArchiveEntries } from '../archive/storage';
+import { installILMPolicy } from '../elasticsearch/ilm/install';
+import { installIlmForDataStream } from '../elasticsearch/datastream_ilm/install';
 
 jest.mock('../elasticsearch/template/template');
 jest.mock('../kibana/assets/install');
@@ -20,6 +22,10 @@ jest.mock('../kibana/index_pattern/install');
 jest.mock('./install');
 jest.mock('./get');
 
+jest.mock('../archive/storage');
+jest.mock('../elasticsearch/ilm/install');
+jest.mock('../elasticsearch/datastream_ilm/install');
+
 import { updateCurrentWriteIndices } from '../elasticsearch/template/template';
 import { installKibanaAssetsAndReferences } from '../kibana/assets/install';
 
@@ -47,8 +53,22 @@ describe('_installPackage', () => {
 
   beforeEach(async () => {
     soClient = savedObjectsClientMock.create();
+
+    soClient.update.mockImplementation(async (type, id, attributes) => {
+      return { id, attributes } as any;
+    });
+
     esClient = elasticsearchServiceMock.createClusterClient().asInternalUser;
     appContextService.start(createAppContextStartContractMock());
+    jest.mocked(installILMPolicy).mockReset();
+    jest.mocked(installIlmForDataStream).mockReset();
+    jest.mocked(installIlmForDataStream).mockResolvedValue({
+      esReferences: [],
+      installedIlms: [],
+    });
+    jest.mocked(saveArchiveEntries).mockResolvedValue({
+      saved_objects: [],
+    });
   });
   afterEach(async () => {
     appContextService.stop();
@@ -96,4 +116,100 @@ describe('_installPackage', () => {
     await expect(installationPromise).rejects.toThrow('mocked');
     await expect(installationPromise).rejects.toThrow('should be caught');
   });
+
+  it('do not install ILM policies if disabled in config', async () => {
+    appContextService.start(
+      createAppContextStartContractMock({
+        internal: {
+          disableILMPolicies: true,
+        },
+      })
+    );
+    // force errors from this function
+    mockedInstallKibanaAssetsAndReferences.mockResolvedValue([]);
+    // pick any function between when those are called and when await Promise.all is defined later
+    // and force it to take long enough for the errors to occur
+    // @ts-expect-error about call signature
+    mockedUpdateCurrentWriteIndices.mockImplementation(async () => await sleep(1000));
+    mockedInstallIndexTemplatesAndPipelines.mockResolvedValue({
+      installedTemplates: [],
+      esReferences: [],
+    });
+    await _installPackage({
+      savedObjectsClient: soClient,
+      // @ts-ignore
+      savedObjectsImporter: jest.fn(),
+      esClient,
+      logger: loggerMock.create(),
+      paths: [],
+      packageInfo: {
+        title: 'title',
+        name: 'xyz',
+        version: '4.5.6',
+        description: 'test',
+        type: 'integration',
+        categories: ['cloud', 'custom'],
+        format_version: 'string',
+        release: 'experimental',
+        conditions: { kibana: { version: 'x.y.z' } },
+        owner: { github: 'elastic/fleet' },
+      },
+      installType: 'install',
+      installSource: 'registry',
+      spaceId: DEFAULT_SPACE_ID,
+    });
+
+    expect(installILMPolicy).not.toBeCalled();
+    expect(installIlmForDataStream).not.toBeCalled();
+    // if we have a .catch this will fail nicely (test pass)
+    // otherwise the test will fail with either of the mocked errors
+    // await expect(installationPromise).rejects.toThrow('mocked');
+    // await expect(installationPromise).rejects.toThrow('should be caught');
+  });
+
+  it('install ILM policies if not disabled in config', async () => {
+    appContextService.start(
+      createAppContextStartContractMock({
+        internal: {
+          disableILMPolicies: false,
+        },
+      })
+    );
+    // force errors from this function
+    mockedInstallKibanaAssetsAndReferences.mockResolvedValue([]);
+    // pick any function between when those are called and when await Promise.all is defined later
+    // and force it to take long enough for the errors to occur
+    // @ts-expect-error about call signature
+    mockedUpdateCurrentWriteIndices.mockImplementation(async () => await sleep(1000));
+    mockedInstallIndexTemplatesAndPipelines.mockResolvedValue({
+      installedTemplates: [],
+      esReferences: [],
+    });
+    await _installPackage({
+      savedObjectsClient: soClient,
+      // @ts-ignore
+      savedObjectsImporter: jest.fn(),
+      esClient,
+      logger: loggerMock.create(),
+      paths: [],
+      packageInfo: {
+        title: 'title',
+        name: 'xyz',
+        version: '4.5.6',
+        description: 'test',
+        type: 'integration',
+        categories: ['cloud', 'custom'],
+        format_version: 'string',
+        release: 'experimental',
+        conditions: { kibana: { version: 'x.y.z' } },
+        owner: { github: 'elastic/fleet' },
+      },
+      installType: 'install',
+      installSource: 'registry',
+      spaceId: DEFAULT_SPACE_ID,
+    });
+
+    expect(installILMPolicy).toBeCalled();
+    expect(installIlmForDataStream).toBeCalled();
+  });
 });

x-pack/plugins/fleet/server/services/epm/packages/_install_package.ts

@@ -153,20 +153,24 @@ export async function _installPackage({
     // currently only the base package has an ILM policy
     // at some point ILM policies can be installed/modified
     // per data stream and we should then save them
-    esReferences = await withPackageSpan('Install ILM policies', () =>
-      installILMPolicy(packageInfo, paths, esClient, savedObjectsClient, logger, esReferences)
-    );
+    const isILMPoliciesDisabled =
+      appContextService.getConfig()?.internal?.disableILMPolicies ?? false;
+    if (!isILMPoliciesDisabled) {
+      esReferences = await withPackageSpan('Install ILM policies', () =>
+        installILMPolicy(packageInfo, paths, esClient, savedObjectsClient, logger, esReferences)
+      );
 
-    ({ esReferences } = await withPackageSpan('Install Data Stream ILM policies', () =>
-      installIlmForDataStream(
-        packageInfo,
-        paths,
-        esClient,
-        savedObjectsClient,
-        logger,
-        esReferences
-      )
-    ));
+      ({ esReferences } = await withPackageSpan('Install Data Stream ILM policies', () =>
+        installIlmForDataStream(
+          packageInfo,
+          paths,
+          esClient,
+          savedObjectsClient,
+          logger,
+          esReferences
+        )
+      ));
+    }
 
     // installs ml models
     esReferences = await withPackageSpan('Install ML models', () =>