Alerting: hide "silence" button for external AM setups (#62133)

pkg/services/ngalert/api/api_configuration.go

@@ -148,8 +148,15 @@ func (srv ConfigSrv) RouteGetAlertingStatus(c *contextmodel.ReqContext) response
 		sendsAlertsTo = cfg.SendAlertsTo
 	}
 
+	// handle errors
+	externalAlertManagers, err := srv.externalAlertmanagers(c.Req.Context(), c.OrgID)
+	if err != nil {
+		return ErrResp(http.StatusInternalServerError, err, "")
+	}
+
 	resp := apimodels.AlertingStatus{
 		AlertmanagersChoice:      apimodels.AlertmanagersChoice(sendsAlertsTo.String()),
+		NumExternalAlertmanagers: len(externalAlertManagers),
 	}
 	return response.JSON(http.StatusOK, resp)
 }

pkg/services/ngalert/api/tooling/definitions/admin.go

@@ -93,4 +93,5 @@ type GettableAlertmanagers struct {
 // swagger:model
 type AlertingStatus struct {
 	AlertmanagersChoice      AlertmanagersChoice `json:"alertmanagersChoice"`
+	NumExternalAlertmanagers int                 `json:"numExternalAlertmanagers"`
 }

public/app/features/alerting/unified/AlertGroups.tsx

@@ -25,7 +25,7 @@ import { getFiltersFromUrlParams } from './utils/misc';
 import { initialAsyncRequestState } from './utils/redux';
 
 const AlertGroups = () => {
-  const { useGetAlertmanagerChoiceQuery } = alertmanagerApi;
+  const { useGetAlertmanagerChoiceStatusQuery } = alertmanagerApi;
 
   const alertManagers = useAlertManagersByPermission('instance');
   const [alertManagerSourceName] = useAlertManagerSourceName(alertManagers);
@@ -34,7 +34,7 @@ const AlertGroups = () => {
   const { groupBy = [] } = getFiltersFromUrlParams(queryParams);
   const styles = useStyles2(getStyles);
 
-  const { currentData: alertmanagerChoice } = useGetAlertmanagerChoiceQuery();
+  const { currentData: amConfigStatus } = useGetAlertmanagerChoiceStatusQuery();
 
   const alertGroups = useUnifiedAlertingSelector((state) => state.amAlertGroups);
   const {
@@ -47,7 +47,8 @@ const AlertGroups = () => {
   const filteredAlertGroups = useFilteredAmGroups(groupedAlerts);
 
   const grafanaAmDeliveryDisabled =
-    alertManagerSourceName === GRAFANA_RULES_SOURCE_NAME && alertmanagerChoice === AlertmanagerChoice.External;
+    alertManagerSourceName === GRAFANA_RULES_SOURCE_NAME &&
+    amConfigStatus?.alertmanagersChoice === AlertmanagerChoice.External;
 
   useEffect(() => {
     function fetchNotifications() {

public/app/features/alerting/unified/AmRoutes.tsx

@@ -7,7 +7,6 @@ import { useDispatch } from 'app/types';
 
 import { useCleanup } from '../../../core/hooks/useCleanup';
 
-import { alertmanagerApi } from './api/alertmanagerApi';
 import { AlertManagerPicker } from './components/AlertManagerPicker';
 import { AlertingPageWrapper } from './components/AlertingPageWrapper';
 import { GrafanaAlertmanagerDeliveryWarning } from './components/GrafanaAlertmanagerDeliveryWarning';
@@ -29,12 +28,11 @@ import { initialAsyncRequestState } from './utils/redux';
 
 const AmRoutes = () => {
   const dispatch = useDispatch();
-  const { useGetAlertmanagerChoiceQuery } = alertmanagerApi;
+
   const styles = useStyles2(getStyles);
   const [isRootRouteEditMode, setIsRootRouteEditMode] = useState(false);
   const alertManagers = useAlertManagersByPermission('notification');
   const [alertManagerSourceName, setAlertManagerSourceName] = useAlertManagerSourceName(alertManagers);
-  const { currentData: alertmanagerChoice } = useGetAlertmanagerChoiceQuery();
 
   const amConfigs = useUnifiedAlertingSelector((state) => state.amConfigs);
 
@@ -130,10 +128,7 @@ const AmRoutes = () => {
           {resultError.message || 'Unknown error.'}
         </Alert>
       )}
-      <GrafanaAlertmanagerDeliveryWarning
-        currentAlertmanager={alertManagerSourceName}
-        alertmanagerChoice={alertmanagerChoice}
-      />
+      <GrafanaAlertmanagerDeliveryWarning currentAlertmanager={alertManagerSourceName} />
       {isProvisioned && <ProvisioningAlert resource={ProvisionedResource.RootNotificationPolicy} />}
       {resultLoading && <LoadingPlaceholder text="Loading Alertmanager config..." />}
       {result && !resultLoading && !resultError && (

public/app/features/alerting/unified/Receivers.test.tsx

@@ -24,6 +24,7 @@ import 'whatwg-fetch';
 
 import Receivers from './Receivers';
 import { fetchAlertManagerConfig, fetchStatus, testReceivers, updateAlertManagerConfig } from './api/alertmanager';
+import { AlertmanagersChoiceResponse } from './api/alertmanagerApi';
 import { discoverAlertmanagerFeatures } from './api/buildInfo';
 import { fetchNotifiers } from './api/grafana';
 import * as receiversApi from './api/receiversApi';
@@ -63,6 +64,11 @@ const mocks = {
   contextSrv: jest.mocked(contextSrv),
 };
 
+const alertmanagerChoiceMockedResponse: AlertmanagersChoiceResponse = {
+  alertmanagersChoice: AlertmanagerChoice.Internal,
+  numExternalAlertmanagers: 0,
+};
+
 const renderReceivers = (alertManagerSourceName?: string) => {
   const store = configureStore();
 
@@ -185,7 +191,7 @@ describe('Receivers', () => {
   });
 
   it('Template and receiver tables are rendered, alertmanager can be selected, no notification errors', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
     mocks.api.fetchConfig.mockImplementation((name) =>
       Promise.resolve(name === GRAFANA_RULES_SOURCE_NAME ? someGrafanaAlertManagerConfig : someCloudAlertManagerConfig)
     );
@@ -230,7 +236,7 @@ describe('Receivers', () => {
   });
 
   it('Grafana receiver can be tested', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
     mocks.api.fetchConfig.mockResolvedValue(someGrafanaAlertManagerConfig);
 
@@ -288,7 +294,7 @@ describe('Receivers', () => {
   });
 
   it('Grafana receiver can be created', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
     mocks.api.fetchConfig.mockResolvedValue(someGrafanaAlertManagerConfig);
     mocks.api.updateConfig.mockResolvedValue();
@@ -352,7 +358,7 @@ describe('Receivers', () => {
   });
 
   it('Hides create contact point button for users without permission', () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
     mocks.api.fetchConfig.mockResolvedValue(someGrafanaAlertManagerConfig);
     mocks.api.updateConfig.mockResolvedValue();
@@ -368,7 +374,7 @@ describe('Receivers', () => {
   });
 
   it('Cloud alertmanager receiver can be edited', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
     mocks.api.fetchConfig.mockResolvedValue(someCloudAlertManagerConfig);
     mocks.api.updateConfig.mockResolvedValue();
@@ -464,7 +470,7 @@ describe('Receivers', () => {
   });
 
   it('Prometheus Alertmanager receiver cannot be edited', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
     mocks.api.fetchStatus.mockResolvedValue({
       ...someCloudAlertManagerStatus,
@@ -503,7 +509,7 @@ describe('Receivers', () => {
   });
 
   it('Loads config from status endpoint if there is no user config', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
     // loading an empty config with make it fetch config from status endpoint
     mocks.api.fetchConfig.mockResolvedValue({
       template_files: {},
@@ -525,7 +531,7 @@ describe('Receivers', () => {
   });
 
   it('Shows an empty config when config returns an error and the AM supports lazy config initialization', async () => {
-    mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+    mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
     mocks.api.discoverAlertmanagerFeatures.mockResolvedValue({ lazyConfigInit: true });
     mocks.api.fetchConfig.mockRejectedValue({ message: 'alertmanager storage object not found' });
@@ -542,7 +548,7 @@ describe('Receivers', () => {
 
   describe('Contact points state', () => {
     it('Should render error notifications when there are some points state ', async () => {
-      mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+      mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
       mocks.api.fetchConfig.mockResolvedValue(someGrafanaAlertManagerConfig);
       mocks.api.updateConfig.mockResolvedValue();
 
@@ -614,7 +620,7 @@ describe('Receivers', () => {
       expect(byText('OK').getAll(criticalDetailTable)).toHaveLength(2);
     });
     it('Should render no attempt message when there are some points state with null lastNotifyAttempt, and "-" in null values', async () => {
-      mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+      mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
       mocks.api.fetchConfig.mockResolvedValue(someGrafanaAlertManagerConfig);
       mocks.api.updateConfig.mockResolvedValue();
 
@@ -691,7 +697,7 @@ describe('Receivers', () => {
     });
 
     it('Should not render error notifications when fetching contact points state raises 404 error ', async () => {
-      mockAlertmanagerChoiceResponse(server, { alertmanagersChoice: AlertmanagerChoice.All });
+      mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
       mocks.api.fetchConfig.mockResolvedValue(someGrafanaAlertManagerConfig);
       mocks.api.updateConfig.mockResolvedValue();
 

public/app/features/alerting/unified/Receivers.tsx

@@ -10,7 +10,6 @@ import { useDispatch } from 'app/types';
 
 import { ContactPointsState } from '../../../types';
 
-import { alertmanagerApi } from './api/alertmanagerApi';
 import { useGetContactPointsState } from './api/receiversApi';
 import { AlertManagerPicker } from './components/AlertManagerPicker';
 import { AlertingPageWrapper } from './components/AlertingPageWrapper';
@@ -55,8 +54,6 @@ function NotificationError({ errorCount }: NotificationErrorProps) {
 type PageType = 'receivers' | 'templates' | 'global-config';
 
 const Receivers = () => {
-  const { useGetAlertmanagerChoiceQuery } = alertmanagerApi;
-
   const alertManagers = useAlertManagersByPermission('notification');
   const [alertManagerSourceName, setAlertManagerSourceName] = useAlertManagerSourceName(alertManagers);
   const dispatch = useDispatch();
@@ -97,8 +94,6 @@ const Receivers = () => {
   const contactPointsState: ContactPointsState = useGetContactPointsState(alertManagerSourceName ?? '');
   const integrationsErrorCount = contactPointsState?.errorCount ?? 0;
 
-  const { data: alertmanagerChoice } = useGetAlertmanagerChoiceQuery();
-
   const disableAmSelect = !isRoot;
 
   let pageNav = getPageNavigationModel(type, id);
@@ -131,10 +126,7 @@ const Receivers = () => {
           {error.message || 'Unknown error.'}
         </Alert>
       )}
-      <GrafanaAlertmanagerDeliveryWarning
-        alertmanagerChoice={alertmanagerChoice}
-        currentAlertmanager={alertManagerSourceName}
-      />
+      <GrafanaAlertmanagerDeliveryWarning currentAlertmanager={alertManagerSourceName} />
       {loading && !config && <LoadingPlaceholder text="loading configuration..." />}
       {config && !error && (
         <Switch>

public/app/features/alerting/unified/Silences.tsx

@@ -5,7 +5,6 @@ import { Alert, withErrorBoundary } from '@grafana/ui';
 import { Silence } from 'app/plugins/datasource/alertmanager/types';
 import { useDispatch } from 'app/types';
 
-import { alertmanagerApi } from './api/alertmanagerApi';
 import { featureDiscoveryApi } from './api/featureDiscoveryApi';
 import { AlertManagerPicker } from './components/AlertManagerPicker';
 import { AlertingPageWrapper } from './components/AlertingPageWrapper';
@@ -26,7 +25,6 @@ const Silences = () => {
   const [alertManagerSourceName, setAlertManagerSourceName] = useAlertManagerSourceName(alertManagers);
 
   const dispatch = useDispatch();
-  const { useGetAlertmanagerChoiceQuery } = alertmanagerApi;
   const silences = useUnifiedAlertingSelector((state) => state.silences);
   const alertsRequests = useUnifiedAlertingSelector((state) => state.amAlerts);
   const alertsRequest = alertManagerSourceName
@@ -42,8 +40,6 @@ const Silences = () => {
     { skip: !alertManagerSourceName }
   );
 
-  const { currentData: alertmanagerChoice } = useGetAlertmanagerChoiceQuery();
-
   useEffect(() => {
     function fetchAll() {
       if (alertManagerSourceName) {
@@ -84,10 +80,7 @@ const Silences = () => {
         onChange={setAlertManagerSourceName}
         dataSources={alertManagers}
       />
-      <GrafanaAlertmanagerDeliveryWarning
-        currentAlertmanager={alertManagerSourceName}
-        alertmanagerChoice={alertmanagerChoice}
-      />
+      <GrafanaAlertmanagerDeliveryWarning currentAlertmanager={alertManagerSourceName} />
 
       {mimirLazyInitError && (
         <Alert title="The selected Alertmanager has no configuration" severity="warning">

public/app/features/alerting/unified/api/alertmanagerApi.ts

@@ -9,14 +9,14 @@ import { alertingApi } from './alertingApi';
 
 export interface AlertmanagersChoiceResponse {
   alertmanagersChoice: AlertmanagerChoice;
+  numExternalAlertmanagers: number;
 }
 
 export const alertmanagerApi = alertingApi.injectEndpoints({
   endpoints: (build) => ({
-    getAlertmanagerChoice: build.query<AlertmanagerChoice, void>({
+    getAlertmanagerChoiceStatus: build.query<AlertmanagersChoiceResponse, void>({
       query: () => ({ url: '/api/v1/ngalert' }),
       providesTags: ['AlertmanagerChoice'],
-      transformResponse: (response: AlertmanagersChoiceResponse) => response.alertmanagersChoice,
     }),
 
     getExternalAlertmanagerConfig: build.query<ExternalAlertmanagerConfig, void>({

public/app/features/alerting/unified/components/GrafanaAlertmanagerDeliveryWarning.test.tsx

@@ -1,47 +1,100 @@
-import { render } from '@testing-library/react';
+import { render, screen } from '@testing-library/react';
+import { setupServer } from 'msw/node';
 import React from 'react';
+import { Provider } from 'react-redux';
+
+import 'whatwg-fetch';
+
+import { setBackendSrv } from '@grafana/runtime';
+import { backendSrv } from 'app/core/services/backend_srv';
+import { configureStore } from 'app/store/configureStore';
 
 import { AlertmanagerChoice } from '../../../../plugins/datasource/alertmanager/types';
+import { mockAlertmanagerChoiceResponse } from '../mocks/alertmanagerApi';
 import { GRAFANA_RULES_SOURCE_NAME } from '../utils/datasource';
 
 import { GrafanaAlertmanagerDeliveryWarning } from './GrafanaAlertmanagerDeliveryWarning';
 
 describe('GrafanaAlertmanagerDeliveryWarning', () => {
-  describe('When AlertmanagerChoice set to External', () => {
+  const server = setupServer();
+
+  beforeAll(() => {
+    setBackendSrv(backendSrv);
+    server.listen({ onUnhandledRequest: 'error' });
+  });
+
+  afterAll(() => {
+    server.close();
+  });
+
+  beforeEach(() => {
+    server.resetHandlers();
+  });
+
   it('Should not render when the datasource is not Grafana', () => {
-      const { container } = render(
-        <GrafanaAlertmanagerDeliveryWarning
-          currentAlertmanager="custom-alertmanager"
-          alertmanagerChoice={AlertmanagerChoice.External}
-        />
+    mockAlertmanagerChoiceResponse(server, {
+      alertmanagersChoice: AlertmanagerChoice.External,
+      numExternalAlertmanagers: 0,
+    });
+
+    const { container } = renderWithStore(
+      <GrafanaAlertmanagerDeliveryWarning currentAlertmanager="custom-alertmanager" />
     );
 
     expect(container).toBeEmptyDOMElement();
   });
 
-    it('Should render warning when the datasource is Grafana', () => {
-      const { container } = render(
-        <GrafanaAlertmanagerDeliveryWarning
-          currentAlertmanager={GRAFANA_RULES_SOURCE_NAME}
-          alertmanagerChoice={AlertmanagerChoice.External}
-        />
-      );
-
-      expect(container).toHaveTextContent('Grafana alerts are not delivered to Grafana Alertmanager');
-    });
+  it('Should render warning when the datasource is Grafana and using external AM', async () => {
+    mockAlertmanagerChoiceResponse(server, {
+      alertmanagersChoice: AlertmanagerChoice.External,
+      numExternalAlertmanagers: 1,
     });
 
-  it.each([AlertmanagerChoice.All, AlertmanagerChoice.Internal])(
-    'Should not render when datasource is Grafana and Alertmanager choice is %s',
-    (choice) => {
-      const { container } = render(
-        <GrafanaAlertmanagerDeliveryWarning
-          currentAlertmanager={GRAFANA_RULES_SOURCE_NAME}
-          alertmanagerChoice={choice}
-        />
+    renderWithStore(<GrafanaAlertmanagerDeliveryWarning currentAlertmanager={GRAFANA_RULES_SOURCE_NAME} />);
+
+    expect(await screen.findByText('Grafana alerts are not delivered to Grafana Alertmanager')).toBeVisible();
+  });
+
+  it('Should render warning when the datasource is Grafana and using All AM', async () => {
+    mockAlertmanagerChoiceResponse(server, {
+      alertmanagersChoice: AlertmanagerChoice.All,
+      numExternalAlertmanagers: 1,
+    });
+
+    renderWithStore(<GrafanaAlertmanagerDeliveryWarning currentAlertmanager={GRAFANA_RULES_SOURCE_NAME} />);
+
+    expect(await screen.findByText('You have additional Alertmanagers to configure')).toBeVisible();
+  });
+
+  it('Should render no warning when choice is Internal', async () => {
+    mockAlertmanagerChoiceResponse(server, {
+      alertmanagersChoice: AlertmanagerChoice.Internal,
+      numExternalAlertmanagers: 1,
+    });
+
+    const { container } = renderWithStore(
+      <GrafanaAlertmanagerDeliveryWarning currentAlertmanager={GRAFANA_RULES_SOURCE_NAME} />
     );
 
     expect(container).toBeEmptyDOMElement();
-    }
+  });
+
+  it('Should render no warning when choice is All but no active AM instances', async () => {
+    mockAlertmanagerChoiceResponse(server, {
+      alertmanagersChoice: AlertmanagerChoice.All,
+      numExternalAlertmanagers: 0,
+    });
+
+    const { container } = renderWithStore(
+      <GrafanaAlertmanagerDeliveryWarning currentAlertmanager={GRAFANA_RULES_SOURCE_NAME} />
     );
+
+    expect(container).toBeEmptyDOMElement();
+  });
 });
+
+function renderWithStore(element: JSX.Element) {
+  const store = configureStore();
+
+  return render(<Provider store={store}>{element}</Provider>);
+}

public/app/features/alerting/unified/components/GrafanaAlertmanagerDeliveryWarning.tsx

@@ -5,37 +5,58 @@ import { GrafanaTheme2 } from '@grafana/data/src';
 import { Alert, useStyles2 } from '@grafana/ui/src';
 
 import { AlertmanagerChoice } from '../../../../plugins/datasource/alertmanager/types';
+import { alertmanagerApi } from '../api/alertmanagerApi';
 import { GRAFANA_RULES_SOURCE_NAME } from '../utils/datasource';
 
 interface GrafanaAlertmanagerDeliveryWarningProps {
-  alertmanagerChoice?: AlertmanagerChoice;
   currentAlertmanager: string;
 }
 
-export function GrafanaAlertmanagerDeliveryWarning({
-  alertmanagerChoice,
-  currentAlertmanager,
-}: GrafanaAlertmanagerDeliveryWarningProps) {
+export function GrafanaAlertmanagerDeliveryWarning({ currentAlertmanager }: GrafanaAlertmanagerDeliveryWarningProps) {
   const styles = useStyles2(getStyles);
 
-  if (currentAlertmanager !== GRAFANA_RULES_SOURCE_NAME) {
+  const { useGetAlertmanagerChoiceStatusQuery } = alertmanagerApi;
+  const { currentData: amChoiceStatus } = useGetAlertmanagerChoiceStatusQuery();
+
+  const viewingInternalAM = currentAlertmanager === GRAFANA_RULES_SOURCE_NAME;
+
+  const interactsWithExternalAMs =
+    amChoiceStatus?.alertmanagersChoice &&
+    [AlertmanagerChoice.External, AlertmanagerChoice.All].includes(amChoiceStatus?.alertmanagersChoice);
+
+  if (!interactsWithExternalAMs || !viewingInternalAM) {
     return null;
   }
 
-  if (alertmanagerChoice !== AlertmanagerChoice.External) {
-    return null;
-  }
+  const hasActiveExternalAMs = amChoiceStatus.numExternalAlertmanagers > 0;
 
+  if (amChoiceStatus.alertmanagersChoice === AlertmanagerChoice.External) {
     return (
       <Alert title="Grafana alerts are not delivered to Grafana Alertmanager">
         Grafana is configured to send alerts to external Alertmanagers only. Changing Grafana Alertmanager configuration
-      will not affect delivery of your alerts!
+        will not affect delivery of your alerts.
         <div className={styles.adminHint}>
-        You can change the configuration on the Alerting Admin page. If you do not have access, contact your
-        Administrator
+          To change your Alertmanager setup, go to the Alerting Admin page. If you do not have access, contact your
+          Administrator.
         </div>
       </Alert>
     );
+  }
+
+  if (amChoiceStatus.alertmanagersChoice === AlertmanagerChoice.All && hasActiveExternalAMs) {
+    return (
+      <Alert title="You have additional Alertmanagers to configure" severity="warning">
+        Ensure you make configuration changes in the correct Alertmanagers; both internal and external. Changing one
+        will not affect the others.
+        <div className={styles.adminHint}>
+          To change your Alertmanager setup, go to the Alerting Admin page. If you do not have access, contact your
+          Administrator.
+        </div>
+      </Alert>
+    );
+  }
+
+  return null;
 }
 
 const getStyles = (theme: GrafanaTheme2) => ({

public/app/features/alerting/unified/components/rules/RuleDetails.test.tsx

@@ -1,4 +1,5 @@
 import { render, screen, waitFor } from '@testing-library/react';
+import { setupServer } from 'msw/node';
 import React from 'react';
 import { Provider } from 'react-redux';
 import { MemoryRouter } from 'react-router-dom';
@@ -7,12 +8,15 @@ import { byRole } from 'testing-library-selector';
 import { setBackendSrv } from '@grafana/runtime';
 import { backendSrv } from 'app/core/services/backend_srv';
 import { contextSrv } from 'app/core/services/context_srv';
+import { AlertmanagerChoice } from 'app/plugins/datasource/alertmanager/types';
 import { configureStore } from 'app/store/configureStore';
 import { AccessControlAction } from 'app/types';
 import { CombinedRule } from 'app/types/unified-alerting';
 
+import { AlertmanagersChoiceResponse } from '../../api/alertmanagerApi';
 import { useIsRuleEditable } from '../../hooks/useIsRuleEditable';
 import { getCloudRule, getGrafanaRule } from '../../mocks';
+import { mockAlertmanagerChoiceResponse } from '../../mocks/alertmanagerApi';
 
 import { RuleDetails } from './RuleDetails';
 
@@ -32,11 +36,27 @@ const ui = {
 
 jest.spyOn(contextSrv, 'accessControlEnabled').mockReturnValue(true);
 
+const server = setupServer();
+
+const alertmanagerChoiceMockedResponse: AlertmanagersChoiceResponse = {
+  alertmanagersChoice: AlertmanagerChoice.Internal,
+  numExternalAlertmanagers: 0,
+};
+
 beforeAll(() => {
   setBackendSrv(backendSrv);
+  server.listen({ onUnhandledRequest: 'error' });
   jest.clearAllMocks();
 });
 
+afterAll(() => {
+  server.close();
+});
+
+beforeEach(() => {
+  server.resetHandlers();
+});
+
 describe('RuleDetails RBAC', () => {
   describe('Grafana rules action buttons in details', () => {
     const grafanaRule = getGrafanaRule({ name: 'Grafana' });
@@ -68,6 +88,7 @@ describe('RuleDetails RBAC', () => {
     it('Should not render Silence button for users wihout the instance create permission', async () => {
       // Arrange
       jest.spyOn(contextSrv, 'hasPermission').mockReturnValue(false);
+      mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
 
       // Act
       renderRuleDetails(grafanaRule);
@@ -78,6 +99,8 @@ describe('RuleDetails RBAC', () => {
     });
 
     it('Should render Silence button for users with the instance create permissions', async () => {
+      mockAlertmanagerChoiceResponse(server, alertmanagerChoiceMockedResponse);
+
       // Arrange
       jest
         .spyOn(contextSrv, 'hasPermission')
@@ -91,6 +114,7 @@ describe('RuleDetails RBAC', () => {
       await waitFor(() => screen.queryByRole('button', { name: 'Declare incident' }));
     });
   });
+
   describe('Cloud rules action buttons', () => {
     const cloudRule = getCloudRule({ name: 'Cloud' });
 

public/app/features/alerting/unified/components/rules/RuleDetailsActionButtons.tsx

@@ -7,10 +7,12 @@ import { config } from '@grafana/runtime';
 import { Button, ClipboardButton, ConfirmModal, HorizontalGroup, LinkButton, useStyles2 } from '@grafana/ui';
 import { useAppNotification } from 'app/core/copy/appNotification';
 import { contextSrv } from 'app/core/services/context_srv';
+import { AlertmanagerChoice } from 'app/plugins/datasource/alertmanager/types';
 import { AccessControlAction, useDispatch } from 'app/types';
 import { CombinedRule, RulesSource } from 'app/types/unified-alerting';
 import { PromAlertingRuleState } from 'app/types/unified-alerting-dto';
 
+import { alertmanagerApi } from '../../api/alertmanagerApi';
 import { useIsRuleEditable } from '../../hooks/useIsRuleEditable';
 import { useStateHistoryModal } from '../../hooks/useStateHistoryModal';
 import { deleteRuleAction } from '../../state/actions';
@@ -84,6 +86,7 @@ export const RuleDetailsActionButtons: FC<Props> = ({ rule, rulesSource, isViewM
   const rulesPermissions = getRulesPermissions(rulesSourceName);
   const hasCreateRulePermission = contextSrv.hasPermission(rulesPermissions.create);
   const { isEditable, isRemovable } = useIsRuleEditable(rulesSourceName, rulerRule);
+  const canSilence = useCanSilence(rule);
 
   const returnTo = location.pathname + location.search;
   // explore does not support grafana rule queries atm
@@ -149,7 +152,7 @@ export const RuleDetailsActionButtons: FC<Props> = ({ rule, rulesSource, isViewM
     }
   }
 
-  if (alertmanagerSourceName && contextSrv.hasAccess(AccessControlAction.AlertingInstanceCreate, contextSrv.isEditor)) {
+  if (canSilence && alertmanagerSourceName) {
     buttons.push(
       <LinkButton
         size="sm"
@@ -263,6 +266,31 @@ export const RuleDetailsActionButtons: FC<Props> = ({ rule, rulesSource, isViewM
   return null;
 };
 
+/**
+ * We don't want to show the silence button if either
+ * 1. the user has no permissions to create silences
+ * 2. the admin has configured to only send instances to external AMs
+ */
+function useCanSilence(rule: CombinedRule) {
+  const isGrafanaManagedRule = isGrafanaRulerRule(rule.rulerRule);
+
+  const { useGetAlertmanagerChoiceStatusQuery } = alertmanagerApi;
+  const { currentData: amConfigStatus, isLoading } = useGetAlertmanagerChoiceStatusQuery(undefined, {
+    skip: !isGrafanaManagedRule,
+  });
+
+  if (!isGrafanaManagedRule || isLoading) {
+    return false;
+  }
+
+  const hasPermissions = contextSrv.hasAccess(AccessControlAction.AlertingInstanceCreate, contextSrv.isEditor);
+
+  const interactsOnlyWithExternalAMs = amConfigStatus?.alertmanagersChoice === AlertmanagerChoice.External;
+  const interactsWithAll = amConfigStatus?.alertmanagersChoice === AlertmanagerChoice.All;
+
+  return hasPermissions && (!interactsOnlyWithExternalAMs || interactsWithAll);
+}
+
 export const getStyles = (theme: GrafanaTheme2) => ({
   wrapper: css`
     padding: ${theme.spacing(2)} 0;

public/app/features/alerting/unified/components/silences/MatchedSilencedRules.tsx

@@ -64,12 +64,12 @@ export const MatchedSilencedRules = () => {
         {matchers.every((matcher) => !matcher.value && !matcher.name) ? (
           <span>Add a valid matcher to see affected alerts</span>
         ) : (
-          <>
-            <DynamicTable items={matchedAlertRules.slice(0, 5) ?? []} isExpandable={false} cols={columns} />
-            {matchedAlertRules.length > 5 && (
-              <div className={styles.moreMatches}>and {matchedAlertRules.length - 5} more</div>
-            )}
-          </>
+          <DynamicTable
+            items={matchedAlertRules}
+            isExpandable={false}
+            cols={columns}
+            pagination={{ itemsPerPage: 5 }}
+          />
         )}
       </div>
     </div>
@@ -92,7 +92,7 @@ function useColumns(): MatchedRulesTableColumnProps[] {
       renderCell: function renderName({ data: { matchedInstance } }) {
         return <AlertLabels labels={matchedInstance.labels} />;
       },
-      size: '250px',
+      size: 'auto',
     },
     {
       id: 'created',
@@ -106,7 +106,7 @@ function useColumns(): MatchedRulesTableColumnProps[] {
           </>
         );
       },
-      size: '400px',
+      size: '180px',
     },
   ];
 }

public/app/features/alerting/unified/mocks.ts

@@ -173,6 +173,25 @@ export const mockPromAlertingRule = (partial: Partial<AlertingRule> = {}): Alert
   };
 };
 
+export const mockGrafanaRulerRule = (partial: Partial<RulerGrafanaRuleDTO> = {}): RulerGrafanaRuleDTO => {
+  return {
+    for: '',
+    annotations: {},
+    labels: {},
+    grafana_alert: {
+      ...partial,
+      uid: '',
+      title: 'my rule',
+      namespace_uid: '',
+      namespace_id: 0,
+      condition: '',
+      no_data_state: GrafanaAlertStateDecision.NoData,
+      exec_err_state: GrafanaAlertStateDecision.Error,
+      data: [],
+    },
+  };
+};
+
 export const mockPromRecordingRule = (partial: Partial<RecordingRule> = {}): RecordingRule => {
   return {
     type: PromRuleType.Recording,
@@ -570,6 +589,7 @@ export function getGrafanaRule(override?: Partial<CombinedRule>) {
       name: 'Grafana',
       rulesSource: 'grafana',
     },
+    rulerRule: mockGrafanaRulerRule(),
     ...override,
   });
 }