Chapter 5. Monitoring OpenShift Serverless components

Procedure

1. In the OpenShift Container Platform web console, navigate to the Operators OperatorHub page and install the Prometheus Operator in the namespace where your application is.
2. Navigate to the Operators Installed Operators page and install Prometheus, Alertmanager, Prometheus Rule, and Service Monitor in the same namespace.

Procedure

1. Verify that the ServiceMonitor objects are deployed.

   $ oc get servicemonitor -n knative-serving
   NAME         AGE
   activator    11m
   autoscaler   11m
   controller   11m

2. Verify that the openshift.io/cluster-monitoring=true label has been added to the Knative Serving namespace:

   $ oc get namespace knative-serving --show-labels
   NAME              STATUS   AGE   LABELS
   knative-serving   Active   4d    istio-injection=enabled,openshift.io/cluster-monitoring=true,serving.knative.dev/release=v0.7.0

Procedure

1. Navigate to the OpenShift Container Platform web console and authenticate.
2. Navigate to Monitoring Metrics.

3. Enter the Expression and select Run queries. To monitor Knative Serving autoscaler Pods, use this example expression.

   autoscaler_actual_pods

   You will now see monitoring information for the Knative Serving autoscaler Pods in the console.