diff --git a/packages/kbn-test/src/functional_tests/lib/run_elasticsearch.js b/packages/kbn-test/src/functional_tests/lib/run_elasticsearch.js
deleted file mode 100644
index 3d174791fffc..000000000000
--- a/packages/kbn-test/src/functional_tests/lib/run_elasticsearch.js
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * Licensed to Elasticsearch B.V. under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch B.V. licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-import { resolve } from 'path';
-import { KIBANA_ROOT } from './paths';
-import { createLegacyEsTestCluster } from '../../legacy_es';
-
-import { setupUsers, DEFAULT_SUPERUSER_PASS } from './auth';
-
-export async function runElasticsearch({ config, options }) {
-  const { log, esFrom } = options;
-  const ssl = config.get('esTestCluster.ssl');
-  const license = config.get('esTestCluster.license');
-  const esArgs = config.get('esTestCluster.serverArgs');
-  const esEnvVars = config.get('esTestCluster.serverEnvVars');
-  const isSecurityEnabled = esArgs.includes('xpack.security.enabled=true');
-
-  const cluster = createLegacyEsTestCluster({
-    port: config.get('servers.elasticsearch.port'),
-    password: isSecurityEnabled
-      ? DEFAULT_SUPERUSER_PASS
-      : config.get('servers.elasticsearch.password'),
-    license,
-    log,
-    basePath: resolve(KIBANA_ROOT, '.es'),
-    esFrom: esFrom || config.get('esTestCluster.from'),
-    dataArchive: config.get('esTestCluster.dataArchive'),
-    esArgs,
-    esEnvVars,
-    ssl,
-  });
-
-  await cluster.start();
-
-  if (isSecurityEnabled) {
-    await setupUsers({
-      log,
-      esPort: config.get('servers.elasticsearch.port'),
-      updates: [config.get('servers.elasticsearch'), config.get('servers.kibana')],
-      protocol: config.get('servers.elasticsearch').protocol,
-      caPath: getRelativeCertificateAuthorityPath(config.get('kbnTestServer.serverArgs')),
-    });
-  }
-
-  return cluster;
-}
-
-function getRelativeCertificateAuthorityPath(esConfig = []) {
-  const caConfig = esConfig.find(
-    (config) => config.indexOf('--elasticsearch.ssl.certificateAuthorities') === 0
-  );
-  return caConfig ? caConfig.split('=')[1] : undefined;
-}
diff --git a/packages/kbn-test/src/functional_tests/cli/index.js b/packages/osd-test/src/functional_tests/cli/index.js
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/index.js
rename to packages/osd-test/src/functional_tests/cli/index.js
diff --git a/packages/kbn-test/src/functional_tests/cli/run_tests/__snapshots__/args.test.js.snap b/packages/osd-test/src/functional_tests/cli/run_tests/__snapshots__/args.test.js.snap
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/run_tests/__snapshots__/args.test.js.snap
rename to packages/osd-test/src/functional_tests/cli/run_tests/__snapshots__/args.test.js.snap
diff --git a/packages/kbn-test/src/functional_tests/cli/run_tests/__snapshots__/cli.test.js.snap b/packages/osd-test/src/functional_tests/cli/run_tests/__snapshots__/cli.test.js.snap
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/run_tests/__snapshots__/cli.test.js.snap
rename to packages/osd-test/src/functional_tests/cli/run_tests/__snapshots__/cli.test.js.snap
diff --git a/packages/kbn-test/src/functional_tests/cli/run_tests/args.js b/packages/osd-test/src/functional_tests/cli/run_tests/args.js
similarity index 87%
rename from packages/kbn-test/src/functional_tests/cli/run_tests/args.js
rename to packages/osd-test/src/functional_tests/cli/run_tests/args.js
index 94d510915d8e..270dff5afd78 100644
--- a/packages/kbn-test/src/functional_tests/cli/run_tests/args.js
+++ b/packages/osd-test/src/functional_tests/cli/run_tests/args.js
@@ -20,7 +20,7 @@
 import { resolve } from 'path';
 
 import dedent from 'dedent';
-import { ToolingLog, pickLevelFromFlags } from '@kbn/dev-utils';
+import { ToolingLog, pickLevelFromFlags } from '@osd/dev-utils';
 
 const options = {
   help: { desc: 'Display this menu and exit.' },
@@ -28,15 +28,15 @@ const options = {
     arg: '<file>',
     desc: 'Pass in a config. Can pass in multiple configs.',
   },
-  esFrom: {
+  opensearchFrom: {
     arg: '<snapshot|source>',
     choices: ['snapshot', 'source'],
-    desc: 'Build Elasticsearch from source or run from snapshot.',
-    defaultHelp: 'Default: $TEST_ES_FROM or snapshot',
+    desc: 'Build OpenSearch from source or run from snapshot.',
+    defaultHelp: 'Default: $TEST_OPENSEARCH_FROM or snapshot',
   },
-  'kibana-install-dir': {
+  'opensearch-dashboards-install-dir': {
     arg: '<dir>',
-    desc: 'Run Kibana from existing install directory instead of from source.',
+    desc: 'Run Opensearch Dashboards from existing install directory instead of from source.',
   },
   bail: { desc: 'Stop the test run at the first failure.' },
   grep: {
@@ -114,13 +114,13 @@ export function processOptions(userOptions, defaultConfigPaths) {
     }
   }
 
-  if (!userOptions.esFrom) {
-    userOptions.esFrom = process.env.TEST_ES_FROM || 'snapshot';
+  if (!userOptions.opensearchFrom) {
+    userOptions.opensearchFrom = process.env.TEST_OPENSEARCH_FROM || 'snapshot';
   }
 
-  if (userOptions['kibana-install-dir']) {
-    userOptions.installDir = userOptions['kibana-install-dir'];
-    delete userOptions['kibana-install-dir'];
+  if (userOptions['opensearch-dashboards-install-dir']) {
+    userOptions.installDir = userOptions['opensearch-dashboards-install-dir'];
+    delete userOptions['opensearch-dashboards-install-dir'];
   }
 
   userOptions.suiteFiles = {
@@ -151,7 +151,7 @@ export function processOptions(userOptions, defaultConfigPaths) {
     ...userOptions,
     configs: configs.map((c) => resolve(c)),
     createLogger,
-    extraKbnOpts: userOptions._,
+    extraOsdOpts: userOptions._,
   };
 }
 
diff --git a/packages/kbn-test/src/functional_tests/cli/run_tests/args.test.js b/packages/osd-test/src/functional_tests/cli/run_tests/args.test.js
similarity index 75%
rename from packages/kbn-test/src/functional_tests/cli/run_tests/args.test.js
rename to packages/osd-test/src/functional_tests/cli/run_tests/args.test.js
index 35e4cef5b3a6..6b27dcfc3560 100644
--- a/packages/kbn-test/src/functional_tests/cli/run_tests/args.test.js
+++ b/packages/osd-test/src/functional_tests/cli/run_tests/args.test.js
@@ -18,16 +18,16 @@
  */
 
 import { displayHelp, processOptions } from './args';
-import { createAbsolutePathSerializer } from '@kbn/dev-utils';
+import { createAbsolutePathSerializer } from '@osd/dev-utils';
 
 expect.addSnapshotSerializer(createAbsolutePathSerializer(process.cwd()));
 
-const INITIAL_TEST_ES_FROM = process.env.TEST_ES_FROM;
+const INITIAL_TEST_OPENSEARCH_FROM = process.env.TEST_OPENSEARCH_FROM;
 beforeEach(() => {
-  process.env.TEST_ES_FROM = 'snapshot';
+  process.env.TEST_OPENSEARCH_FROM = 'snapshot';
 });
 afterEach(() => {
-  process.env.TEST_ES_FROM = INITIAL_TEST_ES_FROM;
+  process.env.TEST_OPENSEARCH_FROM = INITIAL_TEST_OPENSEARCH_FROM;
 });
 
 describe('display help for run tests CLI', () => {
@@ -60,15 +60,15 @@ describe('process options for run tests CLI', () => {
     }).toThrow('functional_tests: invalid argument [peanut] to option [bail]');
   });
 
-  it('accepts string value for kibana-install-dir', () => {
-    const options = processOptions({ 'kibana-install-dir': 'foo' }, ['foo']);
+  it('accepts string value for opensearch-dashboards-install-dir', () => {
+    const options = processOptions({ 'opensearch-dashboards-install-dir': 'foo' }, ['foo']);
     expect(options).toMatchSnapshot();
   });
 
-  it('rejects boolean value for kibana-install-dir', () => {
+  it('rejects boolean value for opensearch-dashboards-install-dir', () => {
     expect(() => {
-      processOptions({ 'kibana-install-dir': true }, ['foo']);
-    }).toThrow('functional_tests: invalid argument [true] to option [kibana-install-dir]');
+      processOptions({ 'opensearch-dashboards-install-dir': true }, ['foo']);
+    }).toThrow('functional_tests: invalid argument [true] to option [opensearch-dashboards-install-dir]');
   });
 
   it('accepts boolean value for updateBaselines', () => {
@@ -76,27 +76,27 @@ describe('process options for run tests CLI', () => {
     expect(options).toMatchSnapshot();
   });
 
-  it('accepts source value for esFrom', () => {
-    const options = processOptions({ esFrom: 'source' }, ['foo']);
+  it('accepts source value for opensearchFrom', () => {
+    const options = processOptions({ opensearchFrom: 'source' }, ['foo']);
     expect(options).toMatchSnapshot();
   });
 
-  it('accepts source value for $TEST_ES_FROM', () => {
-    process.env.TEST_ES_FROM = 'source';
+  it('accepts source value for $TEST_OPENSEARCH_FROM', () => {
+    process.env.TEST_OPENSEARCH_FROM = 'source';
     const options = processOptions({}, ['foo']);
     expect(options).toMatchSnapshot();
   });
 
-  it('prioritizes source flag over $TEST_ES_FROM', () => {
-    process.env.TEST_ES_FROM = 'source';
-    const options = processOptions({ esFrom: 'snapshot' }, ['foo']);
+  it('prioritizes source flag over $TEST_OPENSEARCH_FROM', () => {
+    process.env.TEST_OPENSEARCH_FROM = 'source';
+    const options = processOptions({ opensearchFrom: 'snapshot' }, ['foo']);
     expect(options).toMatchSnapshot();
   });
 
-  it('rejects non-enum value for esFrom', () => {
+  it('rejects non-enum value for opensearchFrom', () => {
     expect(() => {
-      processOptions({ esFrom: 'butter' }, ['foo']);
-    }).toThrow('functional_tests: invalid argument [butter] to option [esFrom]');
+      processOptions({ opensearchFrom: 'butter' }, ['foo']);
+    }).toThrow('functional_tests: invalid argument [butter] to option [opensearchFrom]');
   });
 
   it('accepts value for grep', () => {
diff --git a/packages/kbn-test/src/functional_tests/cli/run_tests/cli.js b/packages/osd-test/src/functional_tests/cli/run_tests/cli.js
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/run_tests/cli.js
rename to packages/osd-test/src/functional_tests/cli/run_tests/cli.js
diff --git a/packages/kbn-test/src/functional_tests/cli/run_tests/cli.test.js b/packages/osd-test/src/functional_tests/cli/run_tests/cli.test.js
similarity index 88%
rename from packages/kbn-test/src/functional_tests/cli/run_tests/cli.test.js
rename to packages/osd-test/src/functional_tests/cli/run_tests/cli.test.js
index 97b74a3b2b54..4606ba48316e 100644
--- a/packages/kbn-test/src/functional_tests/cli/run_tests/cli.test.js
+++ b/packages/osd-test/src/functional_tests/cli/run_tests/cli.test.js
@@ -42,7 +42,7 @@ describe('run tests CLI', () => {
       cwd: jest.fn(),
       env: {
         ...originalObjects.process.env,
-        TEST_ES_FROM: 'snapshot',
+        TEST_OPENSEARCH_FROM: 'snapshot',
       },
     };
 
@@ -60,7 +60,7 @@ describe('run tests CLI', () => {
       global.process.argv = [...argvMock];
       global.process.env = {
         ...originalObjects.process.env,
-        TEST_ES_FROM: 'snapshot',
+        TEST_OPENSEARCH_FROM: 'snapshot',
       };
       jest.resetAllMocks();
     });
@@ -100,16 +100,16 @@ describe('run tests CLI', () => {
       checkMockConsoleLogSnapshot(logMock);
     });
 
-    it('accepts string value for kibana-install-dir', async () => {
-      global.process.argv.push('--kibana-install-dir', 'foo');
+    it('accepts string value for opensearch-dashboards-install-dir', async () => {
+      global.process.argv.push('--opensearch-dashboards-install-dir', 'foo');
 
       await runTestsCli(['foo']);
 
       expect(exitMock).not.toHaveBeenCalled();
     });
 
-    it('rejects boolean value for kibana-install-dir', async () => {
-      global.process.argv.push('--kibana-install-dir');
+    it('rejects boolean value for opensearch-dashboards-install-dir', async () => {
+      global.process.argv.push('--opensearch-dashboards-install-dir');
 
       await runTestsCli(['foo']);
 
@@ -125,16 +125,16 @@ describe('run tests CLI', () => {
       expect(exitMock).not.toHaveBeenCalledWith();
     });
 
-    it('accepts source value for esFrom', async () => {
-      global.process.argv.push('--esFrom', 'source');
+    it('accepts source value for opensearchFrom', async () => {
+      global.process.argv.push('--opensearchFrom', 'source');
 
       await runTestsCli(['foo']);
 
       expect(exitMock).not.toHaveBeenCalled();
     });
 
-    it('rejects non-enum value for esFrom', async () => {
-      global.process.argv.push('--esFrom', 'butter');
+    it('rejects non-enum value for opensearchFrom', async () => {
+      global.process.argv.push('--opensearchFrom', 'butter');
 
       await runTestsCli(['foo']);
 
diff --git a/packages/kbn-test/src/functional_tests/cli/start_servers/__snapshots__/args.test.js.snap b/packages/osd-test/src/functional_tests/cli/start_servers/__snapshots__/args.test.js.snap
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/start_servers/__snapshots__/args.test.js.snap
rename to packages/osd-test/src/functional_tests/cli/start_servers/__snapshots__/args.test.js.snap
diff --git a/packages/kbn-test/src/functional_tests/cli/start_servers/__snapshots__/cli.test.js.snap b/packages/osd-test/src/functional_tests/cli/start_servers/__snapshots__/cli.test.js.snap
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/start_servers/__snapshots__/cli.test.js.snap
rename to packages/osd-test/src/functional_tests/cli/start_servers/__snapshots__/cli.test.js.snap
diff --git a/packages/kbn-test/src/functional_tests/cli/start_servers/args.js b/packages/osd-test/src/functional_tests/cli/start_servers/args.js
similarity index 81%
rename from packages/kbn-test/src/functional_tests/cli/start_servers/args.js
rename to packages/osd-test/src/functional_tests/cli/start_servers/args.js
index e604e86de8b3..f5a8d6fe2bb8 100644
--- a/packages/kbn-test/src/functional_tests/cli/start_servers/args.js
+++ b/packages/osd-test/src/functional_tests/cli/start_servers/args.js
@@ -20,7 +20,7 @@
 import { resolve } from 'path';
 
 import dedent from 'dedent';
-import { ToolingLog, pickLevelFromFlags } from '@kbn/dev-utils';
+import { ToolingLog, pickLevelFromFlags } from '@osd/dev-utils';
 
 const options = {
   help: { desc: 'Display this menu and exit.' },
@@ -28,14 +28,14 @@ const options = {
     arg: '<file>',
     desc: 'Pass in a config',
   },
-  esFrom: {
+  opensearchFrom: {
     arg: '<snapshot|source|path>',
-    desc: 'Build Elasticsearch from source, snapshot or path to existing install dir.',
-    defaultHelp: 'Default: $TEST_ES_FROM or snapshot',
+    desc: 'Build OpenSearch from source, snapshot or path to existing install dir.',
+    defaultHelp: 'Default: $TEST_OPENSEARCH_FROM or snapshot',
   },
-  'kibana-install-dir': {
+  'opensearch-dashboards-install-dir': {
     arg: '<dir>',
-    desc: 'Run Kibana from existing install directory instead of from source.',
+    desc: 'Run Opensearch Dashboards from existing install directory instead of from source.',
   },
   verbose: { desc: 'Log everything.' },
   debug: { desc: 'Run in debug mode.' },
@@ -81,13 +81,13 @@ export function processOptions(userOptions, defaultConfigPath) {
     throw new Error(`functional_tests_server: config is required`);
   }
 
-  if (!userOptions.esFrom) {
-    userOptions.esFrom = process.env.TEST_ES_FROM || 'snapshot';
+  if (!userOptions.opensearchFrom) {
+    userOptions.opensearchFrom = process.env.TEST_OPENSEARCH_FROM || 'snapshot';
   }
 
-  if (userOptions['kibana-install-dir']) {
-    userOptions.installDir = userOptions['kibana-install-dir'];
-    delete userOptions['kibana-install-dir'];
+  if (userOptions['opensearch-dashboards-install-dir']) {
+    userOptions.installDir = userOptions['opensearch-dashboards-install-dir'];
+    delete userOptions['opensearch-dashboards-install-dir'];
   }
 
   function createLogger() {
@@ -101,7 +101,7 @@ export function processOptions(userOptions, defaultConfigPath) {
     ...userOptions,
     config: resolve(config),
     createLogger,
-    extraKbnOpts: userOptions._,
+    extraOsdOpts: userOptions._,
   };
 }
 
diff --git a/packages/kbn-test/src/functional_tests/cli/start_servers/args.test.js b/packages/osd-test/src/functional_tests/cli/start_servers/args.test.js
similarity index 75%
rename from packages/kbn-test/src/functional_tests/cli/start_servers/args.test.js
rename to packages/osd-test/src/functional_tests/cli/start_servers/args.test.js
index 0c842c8c7df4..d257f9572c32 100644
--- a/packages/kbn-test/src/functional_tests/cli/start_servers/args.test.js
+++ b/packages/osd-test/src/functional_tests/cli/start_servers/args.test.js
@@ -18,16 +18,16 @@
  */
 
 import { displayHelp, processOptions } from './args';
-import { createAbsolutePathSerializer } from '@kbn/dev-utils';
+import { createAbsolutePathSerializer } from '@osd/dev-utils';
 
 expect.addSnapshotSerializer(createAbsolutePathSerializer(process.cwd()));
 
-const INITIAL_TEST_ES_FROM = process.env.TEST_ES_FROM;
+const INITIAL_TEST_OPENSEARCH_FROM = process.env.TEST_OPENSEARCH_FROM;
 beforeEach(() => {
-  process.env.TEST_ES_FROM = 'snapshot';
+  process.env.TEST_OPENSEARCH_FROM = 'snapshot';
 });
 afterEach(() => {
-  process.env.TEST_ES_FROM = INITIAL_TEST_ES_FROM;
+  process.env.TEST_OPENSEARCH_FROM = INITIAL_TEST_OPENSEARCH_FROM;
 });
 
 describe('display help for start servers CLI', () => {
@@ -60,31 +60,31 @@ describe('process options for start servers CLI', () => {
     }).toThrow('functional_tests_server: invalid option [bail]');
   });
 
-  it('accepts string value for kibana-install-dir', () => {
-    const options = processOptions({ 'kibana-install-dir': 'foo' }, 'foo');
+  it('accepts string value for opensearch-dashboards-install-dir', () => {
+    const options = processOptions({ 'opensearch-dashboards-install-dir': 'foo' }, 'foo');
     expect(options).toMatchSnapshot();
   });
 
-  it('rejects boolean value for kibana-install-dir', () => {
+  it('rejects boolean value for opensearch-dashboards-install-dir', () => {
     expect(() => {
-      processOptions({ 'kibana-install-dir': true }, 'foo');
-    }).toThrow('functional_tests_server: invalid argument [true] to option [kibana-install-dir]');
+      processOptions({ 'opensearch-dashboards-install-dir': true }, 'foo');
+    }).toThrow('functional_tests_server: invalid argument [true] to option [opensearch-dashboards-install-dir]');
   });
 
-  it('accepts source value for esFrom', () => {
-    const options = processOptions({ esFrom: 'source' }, 'foo');
+  it('accepts source value for opensearchFrom', () => {
+    const options = processOptions({ opensearchFrom: 'source' }, 'foo');
     expect(options).toMatchSnapshot();
   });
 
-  it('accepts source value for $TEST_ES_FROM', () => {
-    process.env.TEST_ES_FROM = 'source';
+  it('accepts source value for $TEST_OPENSEARCH_FROM', () => {
+    process.env.TEST_OPENSEARCH_FROM = 'source';
     const options = processOptions({}, 'foo');
     expect(options).toMatchSnapshot();
   });
 
-  it('prioritizes source flag over $TEST_ES_FROM', () => {
-    process.env.TEST_ES_FROM = 'source';
-    const options = processOptions({ esFrom: 'snapshot' }, 'foo');
+  it('prioritizes source flag over $TEST_OPENSEARCH_FROM', () => {
+    process.env.TEST_OPENSEARCH_FROM = 'source';
+    const options = processOptions({ opensearchFrom: 'snapshot' }, 'foo');
     expect(options).toMatchSnapshot();
   });
 
diff --git a/packages/kbn-test/src/functional_tests/cli/start_servers/cli.js b/packages/osd-test/src/functional_tests/cli/start_servers/cli.js
similarity index 100%
rename from packages/kbn-test/src/functional_tests/cli/start_servers/cli.js
rename to packages/osd-test/src/functional_tests/cli/start_servers/cli.js
diff --git a/packages/kbn-test/src/functional_tests/cli/start_servers/cli.test.js b/packages/osd-test/src/functional_tests/cli/start_servers/cli.test.js
similarity index 90%
rename from packages/kbn-test/src/functional_tests/cli/start_servers/cli.test.js
rename to packages/osd-test/src/functional_tests/cli/start_servers/cli.test.js
index 3ceecb280662..6331c6de2031 100644
--- a/packages/kbn-test/src/functional_tests/cli/start_servers/cli.test.js
+++ b/packages/osd-test/src/functional_tests/cli/start_servers/cli.test.js
@@ -42,7 +42,7 @@ describe('start servers CLI', () => {
       cwd: jest.fn(),
       env: {
         ...originalObjects.process.env,
-        TEST_ES_FROM: 'snapshot',
+        TEST_OPENSEARCH_FROM: 'snapshot',
       },
     };
 
@@ -60,7 +60,7 @@ describe('start servers CLI', () => {
       global.process.argv = [...argvMock];
       global.process.env = {
         ...originalObjects.process.env,
-        TEST_ES_FROM: 'snapshot',
+        TEST_OPENSEARCH_FROM: 'snapshot',
       };
       jest.resetAllMocks();
     });
@@ -100,16 +100,16 @@ describe('start servers CLI', () => {
       checkMockConsoleLogSnapshot(logMock);
     });
 
-    it('accepts string value for kibana-install-dir', async () => {
-      global.process.argv.push('--kibana-install-dir', 'foo');
+    it('accepts string value for opensearch-dashboards-install-dir', async () => {
+      global.process.argv.push('--opensearch-dashboards-install-dir', 'foo');
 
       await startServersCli('foo');
 
       expect(exitMock).not.toHaveBeenCalled();
     });
 
-    it('rejects boolean value for kibana-install-dir', async () => {
-      global.process.argv.push('--kibana-install-dir');
+    it('rejects boolean value for opensearch-dashboards-install-dir', async () => {
+      global.process.argv.push('--opensearch-dashboards-install-dir');
 
       await startServersCli('foo');
 
@@ -126,8 +126,8 @@ describe('start servers CLI', () => {
       checkMockConsoleLogSnapshot(logMock);
     });
 
-    it('accepts source value for esFrom', async () => {
-      global.process.argv.push('--esFrom', 'source');
+    it('accepts source value for opensearchFrom', async () => {
+      global.process.argv.push('--opensearchFrom', 'source');
 
       await startServersCli('foo');
 
diff --git a/packages/kbn-test/src/functional_tests/lib/__snapshots__/run_cli.test.js.snap b/packages/osd-test/src/functional_tests/lib/__snapshots__/run_cli.test.js.snap
similarity index 100%
rename from packages/kbn-test/src/functional_tests/lib/__snapshots__/run_cli.test.js.snap
rename to packages/osd-test/src/functional_tests/lib/__snapshots__/run_cli.test.js.snap
diff --git a/packages/kbn-test/src/functional_tests/lib/auth.js b/packages/osd-test/src/functional_tests/lib/auth.js
similarity index 86%
rename from packages/kbn-test/src/functional_tests/lib/auth.js
rename to packages/osd-test/src/functional_tests/lib/auth.js
index 358b16c562b1..bef24a340774 100644
--- a/packages/kbn-test/src/functional_tests/lib/auth.js
+++ b/packages/osd-test/src/functional_tests/lib/auth.js
@@ -82,26 +82,26 @@ async function updateCredentials({
   throw new Error(`${statusCode} response, expected 200 -- ${JSON.stringify(body)}`);
 }
 
-export async function setupUsers({ log, esPort, updates, protocol = 'http', caPath }) {
-  // track the current credentials for the `elastic` user as
+export async function setupUsers({ log, opensearchPort, updates, protocol = 'http', caPath }) {
+  // track the current credentials for the `opensearch` user as
   // they will likely change as we apply updates
-  let auth = `elastic:${DEFAULT_SUPERUSER_PASS}`;
+  let auth = `opensearch:${DEFAULT_SUPERUSER_PASS}`;
   const caCert = caPath && (await readFile(caPath));
 
   for (const { username, password, roles } of updates) {
     // If working with a built-in user, just change the password
-    if (['logstash_system', 'elastic', 'kibana'].includes(username)) {
-      await updateCredentials({ port: esPort, auth, username, password, protocol, caCert });
+    if (['logstash_system', 'opensearch', 'opensearchDashboards'].includes(username)) {
+      await updateCredentials({ port: opensearchPort, auth, username, password, protocol, caCert });
       log.info('setting %j user password to %j', username, password);
 
       // If not a builtin user, add them
     } else {
-      await insertUser({ port: esPort, auth, username, password, roles, protocol, caCert });
+      await insertUser({ port: opensearchPort, auth, username, password, roles, protocol, caCert });
       log.info('Added %j user with password to %j', username, password);
     }
 
-    if (username === 'elastic') {
-      auth = `elastic:${password}`;
+    if (username === 'opensearch') {
+      auth = `opensearch:${password}`;
     }
   }
 }
diff --git a/packages/kbn-test/src/functional_tests/lib/babel_register_for_test_plugins.js b/packages/osd-test/src/functional_tests/lib/babel_register_for_test_plugins.js
similarity index 92%
rename from packages/kbn-test/src/functional_tests/lib/babel_register_for_test_plugins.js
rename to packages/osd-test/src/functional_tests/lib/babel_register_for_test_plugins.js
index 44ff579411bd..a66cdeba492b 100644
--- a/packages/kbn-test/src/functional_tests/lib/babel_register_for_test_plugins.js
+++ b/packages/osd-test/src/functional_tests/lib/babel_register_for_test_plugins.js
@@ -19,7 +19,7 @@
 
 const Path = require('path');
 
-const { REPO_ROOT } = require('@kbn/dev-utils');
+const { REPO_ROOT } = require('@osd/dev-utils');
 
 // modifies all future calls to require() to automatically
 // compile the required source with babel
@@ -34,6 +34,6 @@ require('@babel/register')({
     Path.resolve(REPO_ROOT, 'x-pack/plugins/task_manager/server/config.ts'),
   ],
   babelrc: false,
-  presets: [require.resolve('@kbn/babel-preset/node_preset')],
+  presets: [require.resolve('@osd/babel-preset/node_preset')],
   extensions: ['.js', '.ts', '.tsx'],
 });
diff --git a/packages/kbn-test/src/functional_tests/lib/index.js b/packages/osd-test/src/functional_tests/lib/index.js
similarity index 77%
rename from packages/kbn-test/src/functional_tests/lib/index.js
rename to packages/osd-test/src/functional_tests/lib/index.js
index ec381b56b069..096034f31a13 100644
--- a/packages/kbn-test/src/functional_tests/lib/index.js
+++ b/packages/osd-test/src/functional_tests/lib/index.js
@@ -17,8 +17,8 @@
  * under the License.
  */
 
-export { runKibanaServer } from './run_kibana_server';
-export { runElasticsearch } from './run_elasticsearch';
+export { runOpenSearchDashboardsServer } from './run_opensearch_dashboards_server';
+export { runOpenSearch } from './run_opensearch';
 export { runFtr, hasTests, assertNoneExcluded } from './run_ftr';
-export { KIBANA_ROOT, KIBANA_FTR_SCRIPT, FUNCTIONAL_CONFIG_PATH, API_CONFIG_PATH } from './paths';
+export { OPENSEARCH_DASHBOARDS_ROOT, OPENSEARCH_DASHBOARDS_FTR_SCRIPT, FUNCTIONAL_CONFIG_PATH, API_CONFIG_PATH } from './paths';
 export { runCli } from './run_cli';
diff --git a/packages/kbn-test/src/functional_tests/lib/paths.js b/packages/osd-test/src/functional_tests/lib/paths.js
similarity index 67%
rename from packages/kbn-test/src/functional_tests/lib/paths.js
rename to packages/osd-test/src/functional_tests/lib/paths.js
index 9ede5a105b08..a83dc635bcde 100644
--- a/packages/kbn-test/src/functional_tests/lib/paths.js
+++ b/packages/osd-test/src/functional_tests/lib/paths.js
@@ -25,10 +25,10 @@ function resolveRelative(path) {
   return relative(process.cwd(), resolve(path));
 }
 
-export const KIBANA_EXEC = 'node';
-export const KIBANA_EXEC_PATH = resolveRelative('scripts/kibana');
-export const KIBANA_ROOT = resolve(__dirname, '../../../../../');
-export const KIBANA_FTR_SCRIPT = resolve(KIBANA_ROOT, 'scripts/functional_test_runner');
+export const OPENSEARCH_DASHBOARDS_EXEC = 'node';
+export const OPENSEARCH_DASHBOARDS_EXEC_PATH = resolveRelative('scripts/opensearch_dashboards');
+export const OPENSEARCH_DASHBOARDS_ROOT = resolve(__dirname, '../../../../../');
+export const OPENSEARCH_DASHBOARDS_FTR_SCRIPT = resolve(OPENSEARCH_DASHBOARDS_ROOT, 'scripts/functional_test_runner');
 export const PROJECT_ROOT = resolve(__dirname, '../../../../../../');
-export const FUNCTIONAL_CONFIG_PATH = resolve(KIBANA_ROOT, 'test/functional/config');
-export const API_CONFIG_PATH = resolve(KIBANA_ROOT, 'test/api_integration/config');
+export const FUNCTIONAL_CONFIG_PATH = resolve(OPENSEARCH_DASHBOARDS_ROOT, 'test/functional/config');
+export const API_CONFIG_PATH = resolve(OPENSEARCH_DASHBOARDS_ROOT, 'test/api_integration/config');
diff --git a/packages/kbn-test/src/functional_tests/lib/run_cli.js b/packages/osd-test/src/functional_tests/lib/run_cli.js
similarity index 100%
rename from packages/kbn-test/src/functional_tests/lib/run_cli.js
rename to packages/osd-test/src/functional_tests/lib/run_cli.js
diff --git a/packages/kbn-test/src/functional_tests/lib/run_cli.test.js b/packages/osd-test/src/functional_tests/lib/run_cli.test.js
similarity index 100%
rename from packages/kbn-test/src/functional_tests/lib/run_cli.test.js
rename to packages/osd-test/src/functional_tests/lib/run_cli.test.js
diff --git a/packages/kbn-test/src/functional_tests/lib/run_ftr.js b/packages/osd-test/src/functional_tests/lib/run_ftr.js
similarity index 99%
rename from packages/kbn-test/src/functional_tests/lib/run_ftr.js
rename to packages/osd-test/src/functional_tests/lib/run_ftr.js
index 14883ac977c4..bf49b78ed717 100644
--- a/packages/kbn-test/src/functional_tests/lib/run_ftr.js
+++ b/packages/osd-test/src/functional_tests/lib/run_ftr.js
@@ -33,7 +33,7 @@ async function createFtr({
         bail: !!bail,
         grep,
       },
-      kbnTestServer: {
+      osdTestServer: {
         installDir,
       },
       updateBaselines,
diff --git a/packages/osd-test/src/functional_tests/lib/run_opensearch.js b/packages/osd-test/src/functional_tests/lib/run_opensearch.js
new file mode 100644
index 000000000000..77239e64222d
--- /dev/null
+++ b/packages/osd-test/src/functional_tests/lib/run_opensearch.js
@@ -0,0 +1,69 @@
+/*
+ * Licensed to opensearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. opensearch B.V. licenses this file to you under
+ * the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import { resolve } from 'path';
+import { OPENSEARCH_DASHBOARDS_ROOT } from './paths';
+import { createLegacyOpenSearchTestCluster } from '../../legacy_opensearch';
+
+import { setupUsers, DEFAULT_SUPERUSER_PASS } from './auth';
+
+export async function runOpenSearch({ config, options }) {
+  const { log, opensearchFrom } = options;
+  const ssl = config.get('opensearchTestCluster.ssl');
+  const license = config.get('opensearchTestCluster.license');
+  const opensearchArgs = config.get('opensearchTestCluster.serverArgs');
+  const opensearchEnvVars = config.get('opensearchTestCluster.serverEnvVars');
+  const isSecurityEnabled = opensearchArgs.includes('xpack.security.enabled=true');
+
+  const cluster = createLegacyOpenSearchTestCluster({
+    port: config.get('servers.opensearch.port'),
+    password: isSecurityEnabled
+      ? DEFAULT_SUPERUSER_PASS
+      : config.get('servers.opensearch.password'),
+    license,
+    log,
+    basePath: resolve(OPENSEARCH_DASHBOARDS_ROOT, '.opensearch'),
+    opensearchFrom: opensearchFrom || config.get('opensearchTestCluster.from'),
+    dataArchive: config.get('opensearchTestCluster.dataArchive'),
+    opensearchArgs,
+    opensearchEnvVars,
+    ssl,
+  });
+
+  await cluster.start();
+
+  if (isSecurityEnabled) {
+    await setupUsers({
+      log,
+      opensearchPort: config.get('servers.opensearch.port'),
+      updates: [config.get('servers.opensearch'), config.get('servers.opensearchDashboards')],
+      protocol: config.get('servers.opensearch').protocol,
+      caPath: getRelativeCertificateAuthorityPath(config.get('osdTestServer.serverArgs')),
+    });
+  }
+
+  return cluster;
+}
+
+function getRelativeCertificateAuthorityPath(opensearchConfig = []) {
+  const caConfig = opensearchConfig.find(
+    (config) => config.indexOf('--opensearch.ssl.certificateAuthorities') === 0
+  );
+  return caConfig ? caConfig.split('=')[1] : undefined;
+}
diff --git a/packages/kbn-test/src/functional_tests/lib/run_kibana_server.js b/packages/osd-test/src/functional_tests/lib/run_opensearch_dashboards_server.js
similarity index 73%
rename from packages/kbn-test/src/functional_tests/lib/run_kibana_server.js
rename to packages/osd-test/src/functional_tests/lib/run_opensearch_dashboards_server.js
index e7ec99467ecf..c45709787769 100644
--- a/packages/kbn-test/src/functional_tests/lib/run_kibana_server.js
+++ b/packages/osd-test/src/functional_tests/lib/run_opensearch_dashboards_server.js
@@ -18,7 +18,7 @@
  */
 
 import { resolve, relative } from 'path';
-import { KIBANA_ROOT, KIBANA_EXEC, KIBANA_EXEC_PATH } from './paths';
+import { OPENSEARCH_DASHBOARDS_ROOT, OPENSEARCH_DASHBOARDS_EXEC, OPENSEARCH_DASHBOARDS_EXEC_PATH } from './paths';
 
 function extendNodeOptions(installDir) {
   if (!installDir) {
@@ -37,48 +37,48 @@ function extendNodeOptions(installDir) {
   };
 }
 
-export async function runKibanaServer({ procs, config, options }) {
+export async function runOpenSearchDashboardsServer({ procs, config, options }) {
   const { installDir } = options;
 
-  await procs.run('kibana', {
-    cmd: getKibanaCmd(installDir),
+  await procs.run('opensearch-dashboards', {
+    cmd: getOpenSearchDashboardsCmd(installDir),
     args: filterCliArgs(collectCliArgs(config, options)),
     env: {
       FORCE_COLOR: 1,
       ...process.env,
       ...extendNodeOptions(installDir),
     },
-    cwd: installDir || KIBANA_ROOT,
+    cwd: installDir || OPENSEARCH_DASHBOARDS_ROOT,
     wait: /http server running/,
   });
 }
 
-function getKibanaCmd(installDir) {
+function getOpenSearchDashboardsCmd(installDir) {
   if (installDir) {
     return process.platform.startsWith('win')
-      ? resolve(installDir, 'bin/kibana.bat')
-      : resolve(installDir, 'bin/kibana');
+      ? resolve(installDir, 'bin/opensearch_dashboards.bat')
+      : resolve(installDir, 'bin/opensearch_dashboards');
   }
 
-  return KIBANA_EXEC;
+  return OPENSEARCH_DASHBOARDS_EXEC;
 }
 
 /**
- * When installDir is passed, we run from a built version of Kibana,
+ * When installDir is passed, we run from a built version of Opensearch Dashboards,
  * which uses different command line arguments. If installDir is not
  * passed, we run from source code. We also allow passing in extra
- * Kibana server options, so we tack those on here.
+ * Opensearch Dashboards server options, so we tack those on here.
  */
-function collectCliArgs(config, { installDir, extraKbnOpts }) {
-  const buildArgs = config.get('kbnTestServer.buildArgs') || [];
-  const sourceArgs = config.get('kbnTestServer.sourceArgs') || [];
-  const serverArgs = config.get('kbnTestServer.serverArgs') || [];
+function collectCliArgs(config, { installDir, extraOsdOpts }) {
+  const buildArgs = config.get('osdTestServer.buildArgs') || [];
+  const sourceArgs = config.get('osdTestServer.sourceArgs') || [];
+  const serverArgs = config.get('osdTestServer.serverArgs') || [];
 
   return pipe(
     serverArgs,
     (args) => (installDir ? args.filter((a) => a !== '--oss') : args),
-    (args) => (installDir ? [...buildArgs, ...args] : [KIBANA_EXEC_PATH, ...sourceArgs, ...args]),
-    (args) => args.concat(extraKbnOpts || [])
+    (args) => (installDir ? [...buildArgs, ...args] : [OPENSEARCH_DASHBOARDS_EXEC_PATH, ...sourceArgs, ...args]),
+    (args) => args.concat(extraOsdOpts || [])
   );
 }
 
@@ -119,7 +119,7 @@ function pipe(arr, ...fns) {
 
 /**
  * Checks whether a specific parameter is allowed to appear multiple
- * times in the Kibana parameters.
+ * times in the Opensearch Dashboards parameters.
  */
 function allowsDuplicate(val) {
   return ['--plugin-path'].includes(val.split('=')[0]);
diff --git a/packages/kbn-test/src/functional_tests/tasks.js b/packages/osd-test/src/functional_tests/tasks.js
similarity index 73%
rename from packages/kbn-test/src/functional_tests/tasks.js
rename to packages/osd-test/src/functional_tests/tasks.js
index 7d4fc84d47bd..7e42d8b3499c 100644
--- a/packages/kbn-test/src/functional_tests/tasks.js
+++ b/packages/osd-test/src/functional_tests/tasks.js
@@ -20,30 +20,30 @@
 import { relative } from 'path';
 import * as Rx from 'rxjs';
 import { startWith, switchMap, take } from 'rxjs/operators';
-import { withProcRunner } from '@kbn/dev-utils';
+import { withProcRunner } from '@osd/dev-utils';
 import dedent from 'dedent';
 
 import {
-  runElasticsearch,
-  runKibanaServer,
+  runOpenSearch,
+  runOpenSearchDashboardsServer,
   runFtr,
   assertNoneExcluded,
   hasTests,
-  KIBANA_FTR_SCRIPT,
+  OPENSEARCH_DASHBOARDS_FTR_SCRIPT,
 } from './lib';
 
 import { readConfigFile } from '../functional_test_runner/lib';
 
 const makeSuccessMessage = (options) => {
-  const installDirFlag = options.installDir ? ` --kibana-install-dir=${options.installDir}` : '';
+  const installDirFlag = options.installDir ? ` --opensearch-dashboards-install-dir=${options.installDir}` : '';
 
   return (
     '\n\n' +
     dedent`
-      Elasticsearch and Kibana are ready for functional testing. Start the functional tests
+      OpenSearch and Opensearch Dashboards are ready for functional testing. Start the functional tests
       in another terminal session by running this command from this directory:
 
-          node ${relative(process.cwd(), KIBANA_FTR_SCRIPT)}${installDirFlag}
+          node ${relative(process.cwd(), OPENSEARCH_DASHBOARDS_FTR_SCRIPT)}${installDirFlag}
     ` +
     '\n\n'
   );
@@ -54,18 +54,18 @@ const makeSuccessMessage = (options) => {
  * @param {object} options                   Optional
  * @property {string[]} options.configs      Array of paths to configs
  * @property {function} options.log          An instance of the ToolingLog
- * @property {string} options.installDir     Optional installation dir from which to run Kibana
+ * @property {string} options.installDir     Optional installation dir from which to run Opensearch Dashboards
  * @property {boolean} options.bail          Whether to exit test run at the first failure
- * @property {string} options.esFrom         Optionally run from source instead of snapshot
+ * @property {string} options.opensearchFrom         Optionally run from source instead of snapshot
  */
 export async function runTests(options) {
-  if (!process.env.KBN_NP_PLUGINS_BUILT) {
+  if (!process.env.OSD_NP_PLUGINS_BUILT) {
     const log = options.createLogger();
     log.warning('❗️❗️❗️');
     log.warning('❗️❗️❗️');
     log.warning('❗️❗️❗️');
     log.warning(
-      "   Don't forget to use `node scripts/build_kibana_platform_plugins` to build plugins you plan on testing"
+      "   Don't forget to use `node scripts/build_opensearch_dashboards_platform_plugins` to build plugins you plan on testing"
     );
     log.warning('❗️❗️❗️');
     log.warning('❗️❗️❗️');
@@ -95,17 +95,17 @@ export async function runTests(options) {
     await withProcRunner(log, async (procs) => {
       const config = await readConfigFile(log, configPath);
 
-      let es;
+      let opensearch;
       try {
-        es = await runElasticsearch({ config, options: opts });
-        await runKibanaServer({ procs, config, options: opts });
+        opensearch = await runOpenSearch({ config, options: opts });
+        await runOpenSearchDashboardsServer({ procs, config, options: opts });
         await runFtr({ configPath, options: opts });
       } finally {
         try {
-          await procs.stop('kibana');
+          await procs.stop('opensearch-dashboards');
         } finally {
-          if (es) {
-            await es.cleanup();
+          if (opensearch) {
+            await opensearch.cleanup();
           }
         }
       }
@@ -118,8 +118,8 @@ export async function runTests(options) {
  * @param {object} options                   Optional
  * @property {string} options.config         Path to a config file
  * @property {function} options.log          An instance of the ToolingLog
- * @property {string} options.installDir     Optional installation dir from which to run Kibana
- * @property {string} options.esFrom         Optionally run from source instead of snapshot
+ * @property {string} options.installDir     Optional installation dir from which to run Opensearch Dashboards
+ * @property {string} options.opensearchFrom         Optionally run from source instead of snapshot
  */
 export async function startServers(options) {
   const log = options.createLogger();
@@ -131,14 +131,14 @@ export async function startServers(options) {
   await withProcRunner(log, async (procs) => {
     const config = await readConfigFile(log, options.config);
 
-    const es = await runElasticsearch({ config, options: opts });
-    await runKibanaServer({
+    const opensearch = await runOpenSearch({ config, options: opts });
+    await runOpenSearchDashboardsServer({
       procs,
       config,
       options: {
         ...opts,
-        extraKbnOpts: [
-          ...options.extraKbnOpts,
+        extraOsdOpts: [
+          ...options.extraOsdOpts,
           ...(options.installDir ? [] : ['--dev', '--no-dev-config']),
         ],
       },
@@ -150,7 +150,7 @@ export async function startServers(options) {
     log.success(makeSuccessMessage(options));
 
     await procs.waitForAllToStop();
-    await es.cleanup();
+    await opensearch.cleanup();
   });
 }
 
diff --git a/packages/kbn-test/src/functional_tests/test_helpers.js b/packages/osd-test/src/functional_tests/test_helpers.js
similarity index 100%
rename from packages/kbn-test/src/functional_tests/test_helpers.js
rename to packages/osd-test/src/functional_tests/test_helpers.js