3.2. Specifying how a service is monitored by Cluster Observability Operator

Procedure

1. Create a YAML file named example-coo-app-service-monitor.yaml that contains the following ServiceMonitor object configuration details:

   apiVersion: monitoring.rhobs/v1
   kind: ServiceMonitor
   metadata:
     labels:
       k8s-app: prometheus-coo-example-monitor
     name: prometheus-coo-example-monitor
     namespace: ns1-coo
   spec:
     endpoints:
     - interval: 30s
       port: web
       scheme: http
     selector:
       matchLabels:
         app: prometheus-coo-example-app

   This configuration defines a ServiceMonitor object that the MonitoringStack object will reference to scrape the metrics data exposed by the prometheus-coo-example-app sample service.

2. Apply the configuration to the cluster by running the following command:

   $ oc apply -f example-coo-app-service-monitor.yaml

3. Verify that the ServiceMonitor resource is created by running the following command and observing the output:

   $ oc -n ns1-coo get servicemonitors.monitoring.rhobs

   Example output

   NAME                         AGE
   prometheus-coo-example-monitor   81m