diff --git a/backend/src/routes/__tests__/traceProcessorProxyRoutes.test.ts b/backend/src/routes/__tests__/traceProcessorProxyRoutes.test.ts
index 44059539..6c68cc41 100644
--- a/backend/src/routes/__tests__/traceProcessorProxyRoutes.test.ts
+++ b/backend/src/routes/__tests__/traceProcessorProxyRoutes.test.ts
@@ -43,6 +43,12 @@ let upstreamSockets: Set<NetSocket>;
 let upstreamPort: number;
 let lease: TraceProcessorLeaseRecord;
 let queryRawMock: jest.MockedFunction<(traceId: string, body: Buffer, options?: any) => Promise<Buffer>>;
+let restartLeaseMock: jest.MockedFunction<(
+  traceId: string,
+  leaseId: string,
+  mode: string,
+  scope: EnterpriseRepositoryScope,
+) => Promise<unknown>>;
 
 function restoreEnvValue(key: string, value: string | undefined): void {
   if (value === undefined) {
@@ -69,6 +75,17 @@ function ssoHeaders(req: request.Test, workspaceId = 'workspace-a'): request.Tes
     .set('X-Window-Id', 'window-a');
 }
 
+function adminHeaders(req: request.Test, workspaceId = 'workspace-a'): request.Test {
+  return req
+    .set('X-SmartPerfetto-SSO-User-Id', 'admin-a')
+    .set('X-SmartPerfetto-SSO-Email', 'admin-a@example.test')
+    .set('X-SmartPerfetto-SSO-Tenant-Id', 'tenant-a')
+    .set('X-SmartPerfetto-SSO-Workspace-Id', workspaceId)
+    .set('X-SmartPerfetto-SSO-Roles', 'workspace_admin')
+    .set('X-SmartPerfetto-SSO-Scopes', 'trace:read,trace:write,runtime:manage')
+    .set('X-Window-Id', 'admin-window');
+}
+
 function binaryParser(res: request.Response, callback: (err: Error | null, body: Buffer) => void): void {
   const chunks: Buffer[] = [];
   res.on('data', chunk => chunks.push(Buffer.from(chunk)));
@@ -176,6 +193,13 @@ beforeEach(async () => {
   seedEnterpriseGraph();
   lease = createReadyLease();
   queryRawMock = jest.fn(async (_traceId: string, body: Buffer) => body);
+  restartLeaseMock = jest.fn(async (traceId, leaseId, _mode, restartScope) => {
+    const store = getTraceProcessorLeaseStore();
+    store.markCrashed(restartScope, leaseId);
+    store.markRestarting(restartScope, leaseId);
+    store.markReady(restartScope, leaseId);
+    return { id: 'restarted-processor', traceId };
+  });
   setTraceProcessorServiceForTests({
     getOrLoadTrace: jest.fn(async () => ({
       id: 'trace-a',
@@ -204,6 +228,7 @@ beforeEach(async () => {
       processor: {status: 'ready'},
     })),
     queryRaw: queryRawMock,
+    restartLease: restartLeaseMock,
   } as any);
 });
 
@@ -273,6 +298,78 @@ describe('trace processor lease proxy routes', () => {
     expect(res.status).toBe(404);
   });
 
+  it('requires runtime manage permission for lease admin actions', async () => {
+    const app = makeApp();
+
+    const res = await ssoHeaders(
+      request(app)
+        .post(`/api/tp/${lease.id}/restart`)
+        .send({ reason: 'hung query' }),
+    );
+
+    expect(res.status).toBe(403);
+    expect(restartLeaseMock).not.toHaveBeenCalled();
+  });
+
+  it('lets workspace admins drain a scoped lease and block new proxy work', async () => {
+    const app = makeApp();
+
+    const drainRes = await adminHeaders(
+      request(app)
+        .post(`/api/tp/${lease.id}/drain`)
+        .send({ reason: 'hung query' }),
+    );
+
+    expect(drainRes.status).toBe(200);
+    expect(drainRes.body).toMatchObject({
+      success: true,
+      action: 'drain',
+      reason: 'hung query',
+      lease: {
+        id: lease.id,
+        state: 'draining',
+      },
+    });
+
+    const blockedRes = await adminHeaders(
+      request(app).post(`/api/tp/${lease.id}/status`),
+    );
+    expect(blockedRes.status).toBe(409);
+    expect(blockedRes.body.error).toBe('Trace processor lease is draining');
+  });
+
+  it('lets workspace admins restart a scoped lease without changing the lease id', async () => {
+    const app = makeApp();
+
+    const restartRes = await adminHeaders(
+      request(app)
+        .post(`/api/tp/${lease.id}/restart`)
+        .send({ reason: 'operator restart after hung query' }),
+    );
+
+    expect(restartRes.status).toBe(200);
+    expect(restartRes.body).toMatchObject({
+      success: true,
+      action: 'restart',
+      reason: 'operator restart after hung query',
+      lease: {
+        id: lease.id,
+        traceId: 'trace-a',
+        state: 'active',
+      },
+    });
+    expect(restartLeaseMock).toHaveBeenCalledWith(
+      'trace-a',
+      lease.id,
+      'shared',
+      {
+        tenantId: 'tenant-a',
+        workspaceId: 'workspace-a',
+        userId: 'admin-a',
+      },
+    );
+  });
+
   it('tunnels websocket upgrades to the leased trace processor port', async () => {
     const app = makeApp();
     const proxyServer = http.createServer(app);
diff --git a/backend/src/routes/traceProcessorProxyRoutes.ts b/backend/src/routes/traceProcessorProxyRoutes.ts
index 282156b7..23dd826f 100644
--- a/backend/src/routes/traceProcessorProxyRoutes.ts
+++ b/backend/src/routes/traceProcessorProxyRoutes.ts
@@ -239,6 +239,17 @@ function ensureTraceRead(context: RequestContext): void {
   }
 }
 
+function ensureRuntimeManage(context: RequestContext): void {
+  if (!hasRbacPermission(context, 'runtime:manage')) {
+    throw new TraceProcessorProxyError(403, 'Trace processor lease admin requires runtime:manage permission');
+  }
+}
+
+function leaseAdminReason(req: Request): string | undefined {
+  const reason = typeof req.body?.reason === 'string' ? req.body.reason.trim() : '';
+  return reason ? reason.slice(0, 500) : undefined;
+}
+
 async function resolveProxyTargetForContext(
   context: RequestContext,
   leaseId: string,
@@ -360,6 +371,69 @@ async function forwardQueryRpc(req: Request, res: Response): Promise<void> {
   res.status(200).send(responseBody);
 }
 
+async function drainLease(req: Request, res: Response): Promise<void> {
+  const leaseId = sanitizeContextId(req.params.leaseId);
+  if (!leaseId) {
+    res.status(400).json({ success: false, error: 'leaseId is required' });
+    return;
+  }
+
+  const context = requireRequestContext(req);
+  ensureRuntimeManage(context);
+  const scope = leaseScopeFromContext(context);
+  const store = getTraceProcessorLeaseStore();
+  const lease = store.getLeaseById(scope, leaseId);
+  if (!lease) {
+    throw new TraceProcessorProxyError(404, 'Trace processor lease not found');
+  }
+  if (lease.state === 'released' || lease.state === 'failed') {
+    throw new TraceProcessorProxyError(409, `Trace processor lease is ${lease.state}`);
+  }
+
+  const drained = store.beginDraining(scope, lease.id);
+  res.json({
+    success: true,
+    action: 'drain',
+    reason: leaseAdminReason(req),
+    lease: drained,
+  });
+}
+
+async function restartLease(req: Request, res: Response): Promise<void> {
+  const leaseId = sanitizeContextId(req.params.leaseId);
+  if (!leaseId) {
+    res.status(400).json({ success: false, error: 'leaseId is required' });
+    return;
+  }
+
+  const context = requireRequestContext(req);
+  ensureRuntimeManage(context);
+  const scope = leaseScopeFromContext(context);
+  const store = getTraceProcessorLeaseStore();
+  const lease = store.getLeaseById(scope, leaseId);
+  if (!lease) {
+    throw new TraceProcessorProxyError(404, 'Trace processor lease not found');
+  }
+  if (CONFLICT_STATES.has(lease.state)) {
+    throw new TraceProcessorProxyError(409, `Trace processor lease is ${lease.state}`);
+  }
+
+  const traceProcessorService = getTraceProcessorService();
+  const trace = await traceProcessorService.getOrLoadTrace(lease.traceId);
+  if (!trace) {
+    throw new TraceProcessorProxyError(404, 'Trace not found for trace processor lease');
+  }
+
+  await traceProcessorService.restartLease(lease.traceId, lease.id, lease.mode, scope);
+  const restarted = store.getLeaseById(scope, lease.id);
+  res.json({
+    success: true,
+    action: 'restart',
+    reason: leaseAdminReason(req),
+    lease: restarted,
+  });
+}
+
 function sendProxyError(res: Response, error: unknown): void {
   if (error instanceof TraceProcessorProxyError) {
     if (error.statusCode === 403) {
@@ -472,6 +546,22 @@ router.post('/:leaseId/query', express.raw({ type: '*/*', limit: serverConfig.bo
   }
 });
 
+router.post('/:leaseId/drain', express.json({ limit: '32kb' }), async (req, res) => {
+  try {
+    await drainLease(req, res);
+  } catch (error) {
+    sendProxyError(res, error);
+  }
+});
+
+router.post('/:leaseId/restart', express.json({ limit: '32kb' }), async (req, res) => {
+  try {
+    await restartLease(req, res);
+  } catch (error) {
+    sendProxyError(res, error);
+  }
+});
+
 export function handleTraceProcessorProxyUpgrade(
   req: IncomingMessage,
   socket: Duplex,
diff --git a/backend/src/services/__tests__/rbac.test.ts b/backend/src/services/__tests__/rbac.test.ts
index 20c34b60..9b2d0d58 100644
--- a/backend/src/services/__tests__/rbac.test.ts
+++ b/backend/src/services/__tests__/rbac.test.ts
@@ -35,8 +35,10 @@ describe('enterprise RBAC matrix', () => {
     expect(hasRbacPermission(context('workspace_admin'), 'trace:delete_any')).toBe(true);
     expect(hasRbacPermission(context('workspace_admin'), 'provider:manage_workspace')).toBe(true);
     expect(hasRbacPermission(context('workspace_admin'), 'provider:manage_org')).toBe(false);
+    expect(hasRbacPermission(context('workspace_admin'), 'runtime:manage')).toBe(true);
 
     expect(hasRbacPermission(context('org_admin'), 'provider:manage_org')).toBe(true);
+    expect(hasRbacPermission(context('org_admin'), 'runtime:manage')).toBe(true);
   });
 
   test('lets explicit scopes authorize API key contexts without granting unrelated permissions', () => {
diff --git a/backend/src/services/__tests__/traceProcessorLeaseProcessorRouting.test.ts b/backend/src/services/__tests__/traceProcessorLeaseProcessorRouting.test.ts
index 098c50dd..9215b943 100644
--- a/backend/src/services/__tests__/traceProcessorLeaseProcessorRouting.test.ts
+++ b/backend/src/services/__tests__/traceProcessorLeaseProcessorRouting.test.ts
@@ -224,6 +224,53 @@ describe('TraceProcessorService lease restart supervisor', () => {
     }
   });
 
+  it('allows an explicit admin restart of a ready lease processor', async () => {
+    const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'smartperfetto-lease-admin-restart-'));
+    try {
+      const traceId = 'trace-admin-restart';
+      const tracePath = path.join(tmpDir, `${traceId}.trace`);
+      await fs.writeFile(tracePath, 'trace bytes');
+
+      db = new Database(':memory:');
+      applyEnterpriseMinimalSchema(db);
+      seedEnterpriseGraph(db, traceId);
+      const store = new TraceProcessorLeaseStore(db);
+      setTraceProcessorLeaseStoreForTests(store);
+      const leaseId = createActiveLease(store, traceId);
+
+      const service = new TraceProcessorService(tmpDir, {
+        backoffMs: [0],
+        jitterMs: 0,
+      });
+      await service.initializeUploadWithId(traceId, 'trace-admin-restart.trace', 11, tracePath);
+
+      const current = fakeProcessor('current-processor', traceId);
+      (service as any).processors.set(`${traceId}:lease:${leaseId}`, current);
+
+      const restarted = fakeProcessor('restarted-processor', traceId);
+      const createSpy = jest
+        .spyOn(TraceProcessorFactory, 'create')
+        .mockResolvedValue(restarted as any);
+
+      await expect(service.restartLease(traceId, leaseId, 'isolated', scope))
+        .resolves.toBe(restarted);
+
+      expect(createSpy).toHaveBeenCalledTimes(1);
+      expect(createSpy).toHaveBeenCalledWith(traceId, tracePath, expect.objectContaining({
+        processorKey: `${traceId}:lease:${leaseId}`,
+        leaseId,
+        leaseMode: 'isolated',
+      }));
+      expect(current.destroy).toHaveBeenCalledTimes(1);
+      expect(store.getLeaseById(scope, leaseId)).toMatchObject({
+        id: leaseId,
+        state: 'active',
+      });
+    } finally {
+      await fs.rm(tmpDir, { recursive: true, force: true });
+    }
+  });
+
   it('marks the lease failed after the 1s/5s/15s backoff restart attempts all fail', async () => {
     const tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'smartperfetto-lease-restart-fail-'));
     try {
diff --git a/backend/src/services/rbac.ts b/backend/src/services/rbac.ts
index 8294e691..333c290b 100644
--- a/backend/src/services/rbac.ts
+++ b/backend/src/services/rbac.ts
@@ -21,7 +21,8 @@ export type RbacPermission =
   | 'report:delete'
   | 'provider:manage_workspace'
   | 'provider:manage_org'
-  | 'audit:read';
+  | 'audit:read'
+  | 'runtime:manage';
 
 const ROLE_PERMISSIONS: Record<string, RbacPermission[]> = {
   viewer: ['trace:read', 'report:read'],
@@ -44,6 +45,7 @@ const ROLE_PERMISSIONS: Record<string, RbacPermission[]> = {
     'report:delete',
     'provider:manage_workspace',
     'audit:read',
+    'runtime:manage',
   ],
   org_admin: [
     'trace:read',
@@ -57,6 +59,7 @@ const ROLE_PERMISSIONS: Record<string, RbacPermission[]> = {
     'provider:manage_workspace',
     'provider:manage_org',
     'audit:read',
+    'runtime:manage',
   ],
 };
 
diff --git a/backend/src/services/traceProcessorService.ts b/backend/src/services/traceProcessorService.ts
index 97134209..e54704da 100644
--- a/backend/src/services/traceProcessorService.ts
+++ b/backend/src/services/traceProcessorService.ts
@@ -637,6 +637,20 @@ export class TraceProcessorService extends EventEmitter {
     return this.createProcessor(traceId, { leaseId, mode });
   }
 
+  public async restartLease(
+    traceId: string,
+    leaseId: string,
+    mode: TraceProcessorLeaseMode | string,
+    leaseScope: EnterpriseRepositoryScope,
+  ): Promise<TraceProcessor> {
+    return this.restartLeaseProcessor(traceId, {
+      traceId,
+      leaseId,
+      mode,
+      leaseScope,
+    });
+  }
+
   private async restartLeaseProcessor(
     traceId: string,
     leaseContext: TraceProcessorLeaseQueryContext,