diff --git a/packages/osd-config/src/__mocks__/env.ts b/packages/osd-config/src/__mocks__/env.ts
index e74fdbe0792e..3e14d928fa7f 100644
--- a/packages/osd-config/src/__mocks__/env.ts
+++ b/packages/osd-config/src/__mocks__/env.ts
@@ -52,7 +52,7 @@ export function getEnvOptions(options: DeepPartial<EnvOptions> = {}): EnvOptions
       runExamples: false,
       ...(options.cliArgs || {}),
     },
-    isDevClusterMaster:
-      options.isDevClusterMaster !== undefined ? options.isDevClusterMaster : false,
+    isDevClusterManager:
+      options.isDevClusterManager !== undefined ? options.isDevClusterManager : false,
   };
 }
diff --git a/packages/osd-config/src/__snapshots__/env.test.ts.snap b/packages/osd-config/src/__snapshots__/env.test.ts.snap
index 74a59904411e..9fdc3f4d0a00 100644
--- a/packages/osd-config/src/__snapshots__/env.test.ts.snap
+++ b/packages/osd-config/src/__snapshots__/env.test.ts.snap
@@ -21,7 +21,7 @@ Env {
     "/some/other/path/some-opensearch-dashboards.yml",
   ],
   "homeDir": "/test/opensearchDashboardsRoot",
-  "isDevClusterMaster": false,
+  "isDevClusterManager": false,
   "logDir": "/test/opensearchDashboardsRoot/log",
   "mode": Object {
     "dev": true,
@@ -64,7 +64,7 @@ Env {
     "/some/other/path/some-opensearch-dashboards.yml",
   ],
   "homeDir": "/test/opensearchDashboardsRoot",
-  "isDevClusterMaster": false,
+  "isDevClusterManager": false,
   "logDir": "/test/opensearchDashboardsRoot/log",
   "mode": Object {
     "dev": false,
@@ -106,7 +106,7 @@ Env {
     "/test/cwd/config/opensearch_dashboards.yml",
   ],
   "homeDir": "/test/opensearchDashboardsRoot",
-  "isDevClusterMaster": true,
+  "isDevClusterManager": true,
   "logDir": "/test/opensearchDashboardsRoot/log",
   "mode": Object {
     "dev": true,
@@ -148,7 +148,7 @@ Env {
     "/some/other/path/some-opensearch-dashboards.yml",
   ],
   "homeDir": "/test/opensearchDashboardsRoot",
-  "isDevClusterMaster": false,
+  "isDevClusterManager": false,
   "logDir": "/test/opensearchDashboardsRoot/log",
   "mode": Object {
     "dev": false,
@@ -190,7 +190,7 @@ Env {
     "/some/other/path/some-opensearch-dashboards.yml",
   ],
   "homeDir": "/test/opensearchDashboardsRoot",
-  "isDevClusterMaster": false,
+  "isDevClusterManager": false,
   "logDir": "/test/opensearchDashboardsRoot/log",
   "mode": Object {
     "dev": false,
@@ -232,7 +232,7 @@ Env {
     "/some/other/path/some-opensearch-dashboards.yml",
   ],
   "homeDir": "/some/home/dir",
-  "isDevClusterMaster": false,
+  "isDevClusterManager": false,
   "logDir": "/some/home/dir/log",
   "mode": Object {
     "dev": false,
diff --git a/packages/osd-config/src/env.test.ts b/packages/osd-config/src/env.test.ts
index 65f44fef1feb..c0ec0d2d6ab3 100644
--- a/packages/osd-config/src/env.test.ts
+++ b/packages/osd-config/src/env.test.ts
@@ -58,7 +58,7 @@ test('correctly creates default environment in dev mode.', () => {
     REPO_ROOT,
     getEnvOptions({
       configs: ['/test/cwd/config/opensearch_dashboards.yml'],
-      isDevClusterMaster: true,
+      isDevClusterManager: true,
     })
   );
 
diff --git a/packages/osd-config/src/env.ts b/packages/osd-config/src/env.ts
index 913abe3b3c96..0b5b08be5f15 100644
--- a/packages/osd-config/src/env.ts
+++ b/packages/osd-config/src/env.ts
@@ -36,7 +36,7 @@ import { PackageInfo, EnvironmentMode } from './types';
 export interface EnvOptions {
   configs: string[];
   cliArgs: CliArgs;
-  isDevClusterMaster: boolean;
+  isDevClusterManager: boolean;
 }
 
 /** @internal */
@@ -110,10 +110,10 @@ export class Env {
   public readonly configs: readonly string[];
 
   /**
-   * Indicates that this OpenSearch Dashboards  instance is run as development Node Cluster master.
+   * Indicates that this OpenSearch Dashboards  instance is run as development Node Cluster manager.
    * @internal
    */
-  public readonly isDevClusterMaster: boolean;
+  public readonly isDevClusterManager: boolean;
 
   /**
    * @internal
@@ -137,7 +137,7 @@ export class Env {
 
     this.cliArgs = Object.freeze(options.cliArgs);
     this.configs = Object.freeze(options.configs);
-    this.isDevClusterMaster = options.isDevClusterMaster;
+    this.isDevClusterManager = options.isDevClusterManager;
 
     const isDevMode = this.cliArgs.dev || this.cliArgs.envName === 'development';
     this.mode = Object.freeze<EnvironmentMode>({
diff --git a/src/core/server/bootstrap.ts b/src/core/server/bootstrap.ts
index b16d59683043..e8e98112efd1 100644
--- a/src/core/server/bootstrap.ts
+++ b/src/core/server/bootstrap.ts
@@ -29,7 +29,7 @@
  */
 
 import chalk from 'chalk';
-import { isMaster } from 'cluster';
+import { isMaster as isClusterManager } from 'cluster';
 import { CliArgs, Env, RawConfigService } from './config';
 import { Root } from './root';
 import { CriticalError } from './errors';
@@ -82,7 +82,7 @@ export async function bootstrap({
   const env = Env.createDefault(REPO_ROOT, {
     configs,
     cliArgs,
-    isDevClusterMaster: isMaster && cliArgs.dev && features.isClusterModeSupported,
+    isDevClusterManager: isClusterManager && cliArgs.dev && features.isClusterModeSupported,
   });
 
   const rawConfigService = new RawConfigService(env.configs, applyConfigOverrides);
diff --git a/src/core/server/http/http_service.test.ts b/src/core/server/http/http_service.test.ts
index a261cd7bd3de..46cecb29e4e6 100644
--- a/src/core/server/http/http_service.test.ts
+++ b/src/core/server/http/http_service.test.ts
@@ -275,7 +275,7 @@ test('does not start http server if process is dev cluster master', async () =>
   const service = new HttpService({
     coreId,
     configService,
-    env: Env.createDefault(REPO_ROOT, getEnvOptions({ isDevClusterMaster: true })),
+    env: Env.createDefault(REPO_ROOT, getEnvOptions({ isDevClusterManager: true })),
     logger,
   });
 
diff --git a/src/core/server/http/http_service.ts b/src/core/server/http/http_service.ts
index 6fd900b51363..fa6842a9f064 100644
--- a/src/core/server/http/http_service.ts
+++ b/src/core/server/http/http_service.ts
@@ -169,7 +169,7 @@ export class HttpService
    * @internal
    * */
   private shouldListen(config: HttpConfig) {
-    return !this.coreContext.env.isDevClusterMaster && config.autoListen;
+    return !this.coreContext.env.isDevClusterManager && config.autoListen;
   }
 
   public async stop() {
diff --git a/src/core/server/legacy/legacy_service.test.ts b/src/core/server/legacy/legacy_service.test.ts
index 9b67542e5571..489f7f117b33 100644
--- a/src/core/server/legacy/legacy_service.test.ts
+++ b/src/core/server/legacy/legacy_service.test.ts
@@ -373,7 +373,7 @@ describe('once LegacyService is set up in `devClusterMaster` mode', () => {
         REPO_ROOT,
         getEnvOptions({
           cliArgs: { silent: true, basePath: false },
-          isDevClusterMaster: true,
+          isDevClusterManager: true,
         })
       ),
       logger,
@@ -402,7 +402,7 @@ describe('once LegacyService is set up in `devClusterMaster` mode', () => {
         REPO_ROOT,
         getEnvOptions({
           cliArgs: { quiet: true, basePath: true },
-          isDevClusterMaster: true,
+          isDevClusterManager: true,
         })
       ),
       logger,
diff --git a/src/core/server/legacy/legacy_service.ts b/src/core/server/legacy/legacy_service.ts
index 574734d18fef..ae7e85b98d67 100644
--- a/src/core/server/legacy/legacy_service.ts
+++ b/src/core/server/legacy/legacy_service.ts
@@ -155,7 +155,7 @@ export class LegacyService implements CoreService {
     this.log.debug('starting legacy service');
 
     // Receive initial config and create osdServer/ClusterManager.
-    if (this.coreContext.env.isDevClusterMaster) {
+    if (this.coreContext.env.isDevClusterManager) {
       await this.createClusterManager(this.legacyRawConfig!);
     } else {
       this.osdServer = await this.createOsdServer(
diff --git a/src/core/server/plugins/plugins_service.ts b/src/core/server/plugins/plugins_service.ts
index 3039cae7d9f7..a85c649e65ee 100644
--- a/src/core/server/plugins/plugins_service.ts
+++ b/src/core/server/plugins/plugins_service.ts
@@ -137,7 +137,7 @@ export class PluginsService implements CoreService<PluginsServiceSetup, PluginsS
     const config = await this.config$.pipe(first()).toPromise();
 
     let contracts = new Map<PluginName, unknown>();
-    const initialize = config.initialize && !this.coreContext.env.isDevClusterMaster;
+    const initialize = config.initialize && !this.coreContext.env.isDevClusterManager;
     if (initialize) {
       contracts = await this.pluginsSystem.setupPlugins(deps);
       this.registerPluginStaticDirs(deps);
diff --git a/src/core/test_helpers/osd_server.ts b/src/core/test_helpers/osd_server.ts
index d8ffe3b0824d..331b48d6a5f9 100644
--- a/src/core/test_helpers/osd_server.ts
+++ b/src/core/test_helpers/osd_server.ts
@@ -90,7 +90,7 @@ export function createRootWithSettings(
       dist: false,
       ...cliArgs,
     },
-    isDevClusterMaster: false,
+    isDevClusterManager: false,
   });
 
   return new Root(
diff --git a/src/legacy/server/logging/rotate/index.ts b/src/legacy/server/logging/rotate/index.ts
index b2820f1c8f85..f323d8c6b526 100644
--- a/src/legacy/server/logging/rotate/index.ts
+++ b/src/legacy/server/logging/rotate/index.ts
@@ -28,7 +28,7 @@
  * under the License.
  */
 
-import { isMaster, isWorker } from 'cluster';
+import { isMaster as isClusterManager, isWorker } from 'cluster';
 import { Server } from '@hapi/hapi';
 import { LogRotator } from './log_rotator';
 import { OpenSearchDashboardsConfig } from '../../osd_server';
@@ -43,7 +43,7 @@ export async function setupLoggingRotate(server: Server, config: OpenSearchDashb
 
   // We just want to start the logging rotate service once
   // and we choose to use the master (prod) or the worker server (dev)
-  if (!isMaster && isWorker && process.env.osdWorkerType !== 'server') {
+  if (!isClusterManager && isWorker && process.env.osdWorkerType !== 'server') {
     return;
   }
 
diff --git a/src/legacy/server/logging/rotate/log_rotator.ts b/src/legacy/server/logging/rotate/log_rotator.ts
index f1710cb5775e..7502631d22dd 100644
--- a/src/legacy/server/logging/rotate/log_rotator.ts
+++ b/src/legacy/server/logging/rotate/log_rotator.ts
@@ -29,7 +29,7 @@
  */
 
 import * as chokidar from 'chokidar';
-import { isMaster } from 'cluster';
+import { isMaster as isClusterManager } from 'cluster';
 import fs from 'fs';
 import { Server } from '@hapi/hapi';
 import { throttle } from 'lodash';
@@ -359,7 +359,7 @@ export class LogRotator {
   }
 
   _sendReloadLogConfigSignal() {
-    if (isMaster) {
+    if (isClusterManager) {
       (process as NodeJS.EventEmitter).emit('SIGHUP');
       return;
     }