Testing Prometheus

Run a few tests to verify that your Prometheus setup works.

1. Open the OpenShift web console.
2. In the navigation sidebar on the left, click Observe > Metrics
   The following page is displayed:

   

3. A good first test is a query of the Data Gate synchronization latency. To retrieve the values:
   1. Under the label Queries, select Select query.
   2. From the drop-down list next to the nameless text field underneath, select:
      datagate-table-sync-latency-milliseconds
   3. Click Run queries.
      If Prometheus has been set up correctly, you see a curve in the graph on top that shows the recent history of the synchronization latency.
4. Repeat the steps under 3 to check the status of the Data Gate synchronization function. In step 3.b, select:
   datagate-table-sync-state == 1
   In the table at the bottom of the window, you should see the value started in the State column on the right.
5. Repeat the steps under 3 to check the numbers of successful synchronization metric retrievals (refreshes) over the last 5 minutes. In step 3.b, select:
   rate(datagate_table_sync_metrics_refresh_success_total[5m])
   In the graph on the upper half of the window, you should see a curve that combines the individual values (numbers of successful refreshes.
6. Repeat the steps under 3 to check the numbers of unsuccessful synchronization metric retrievals (refreshes) over the last 5 minutes. In step 3.b, select:
   rate(datagate_table_sync_metrics_refresh_failures_total[5m])
   In the graph on the upper half of the window, you should see a curve that combines the individual values (numbers of refresh failures.