When your application is deployed and exposed, you probably would like to get an alert when your application (service) is not available anymore. To automatically monitor you applications for availability, a probe to monitor your service is automatically configured.

In this lab we'll scale down the replicas of a workload to see how this works.

Check alerts in Alertmanager

1. In the left menu, click on Apps and open Alertmanager.

   

2. As you can see, there are currently no alerts:

   

Scale down the replicas of a Workload

In the lab Expose Services we exposed the blue service. Let's scale down the blue workload and see what happens:

1. Go to Workloads in the left menu and click on the blue workload.

2. Click on the Values tab.

3. In the workload values, set the replicaCount to 0:

   YAML

   replicaCount: 0
   

4. Click Submit.

Check the alerts again

1. Go back to Alertmanager and see if there are new alerts. You should see the following alert:

   

2. Click on +Info for more details about the alert:

   

3. In the summary field, you should see the following:

   Target https://blue-labs.labs.try-apl.net/ is down!