diff --git a/public/app/plugins/datasource/cloud-monitoring/api.test.ts b/public/app/plugins/datasource/cloud-monitoring/api.test.ts
index 6b9dfe18546..992413d09c0 100644
--- a/public/app/plugins/datasource/cloud-monitoring/api.test.ts
+++ b/public/app/plugins/datasource/cloud-monitoring/api.test.ts
@@ -22,7 +22,7 @@ async function getTestContext({ path = 'some-resource', options = {}, response =
   const fetchMock = jest.spyOn(backendSrv, 'fetch');
 
   fetchMock.mockImplementation((options: any) => {
-    const data = { [options.url.match(/([^\/]*)\/*$/)[1]]: response };
+    const data = { [options.url.match(/([^\/]*)\/*$/)![1].split('?')[0]]: response };
     return of(createFetchResponse(data));
   });
 
@@ -39,35 +39,41 @@ async function getTestContext({ path = 'some-resource', options = {}, response =
 
 describe('api', () => {
   describe('when resource was cached', () => {
-    it('should return cached value and not load from source', async () => {
-      const path = 'some-resource';
-      const { res, api, fetchMock } = await getTestContext({ path, cache: response });
+    test.each(['some-resource', 'some-resource?some=param', 'test/some-resource?param'])(
+      'should return cached value and not load from source',
+      async (path) => {
+        const { res, api, fetchMock } = await getTestContext({ path, cache: response });
 
-      expect(res).toEqual(response);
-      expect(api.cache[path]).toEqual(response);
-      expect(fetchMock).not.toHaveBeenCalled();
-    });
+        expect(res).toEqual(response);
+        expect(api.cache[path]).toEqual(response);
+        expect(fetchMock).not.toHaveBeenCalled();
+      }
+    );
   });
 
   describe('when resource was not cached', () => {
-    it('should return from source and not from cache', async () => {
-      const path = 'some-resource';
-      const { res, api, fetchMock } = await getTestContext({ path, response });
+    test.each(['some-resource', 'some-resource?some=param', 'test/some-resource?param'])(
+      'should return from source and not from cache',
+      async (path) => {
+        const { res, api, fetchMock } = await getTestContext({ path, response });
 
-      expect(res).toEqual(response);
-      expect(api.cache[path]).toEqual(response);
-      expect(fetchMock).toHaveBeenCalled();
-    });
+        expect(res).toEqual(response);
+        expect(api.cache[path]).toEqual(response);
+        expect(fetchMock).toHaveBeenCalled();
+      }
+    );
   });
 
   describe('when cache should be bypassed', () => {
-    it('should return from source and not from cache', async () => {
-      const options = { useCache: false };
-      const path = 'some-resource';
-      const { res, fetchMock } = await getTestContext({ path, response, cache: response, options });
+    test.each(['some-resource', 'some-resource?some=param', 'test/some-resource?param'])(
+      'should return from source and not from cache',
+      async (path) => {
+        const options = { useCache: false };
+        const { res, fetchMock } = await getTestContext({ path, response, cache: response, options });
 
-      expect(res).toEqual(response);
-      expect(fetchMock).toHaveBeenCalled();
-    });
+        expect(res).toEqual(response);
+        expect(fetchMock).toHaveBeenCalled();
+      }
+    );
   });
 });
diff --git a/public/app/plugins/datasource/cloud-monitoring/api.ts b/public/app/plugins/datasource/cloud-monitoring/api.ts
index 34d530af8a8..87ba4fdff0a 100644
--- a/public/app/plugins/datasource/cloud-monitoring/api.ts
+++ b/public/app/plugins/datasource/cloud-monitoring/api.ts
@@ -45,7 +45,7 @@ export default class Api {
       })
       .pipe(
         map((response) => {
-          const responsePropName = path.match(/([^\/]*)\/*$/)![1];
+          const responsePropName = path.match(/([^\/]*)\/*$/)![1].split('?')[0];
           let res = [];
           if (response && response.data && response.data[responsePropName]) {
             res = response.data[responsePropName].map(responseMap);
diff --git a/public/app/plugins/datasource/cloud-monitoring/datasource.ts b/public/app/plugins/datasource/cloud-monitoring/datasource.ts
index a6268fe3f38..63ef0db86c7 100644
--- a/public/app/plugins/datasource/cloud-monitoring/datasource.ts
+++ b/public/app/plugins/datasource/cloud-monitoring/datasource.ts
@@ -256,7 +256,7 @@ export default class CloudMonitoringDatasource extends DataSourceWithBackend<
   }
 
   async getSLOServices(projectName: string): Promise<Array<SelectableValue<string>>> {
-    return this.api.get(`${this.templateSrv.replace(projectName)}/services`, {
+    return this.api.get(`${this.templateSrv.replace(projectName)}/services?pageSize=1000`, {
       responseMap: ({ name }: { name: string }) => ({
         value: name.match(/([^\/]*)\/*$/)![1],
         label: name.match(/([^\/]*)\/*$/)![1],