package-server-manager: add a PodMonitor, expose metrics

Signed-off-by: Steve Kuznetsov <[email protected]>

Author: stevekuznetsov

Diff for: cmd/package-server-manager/main.go

@@ -62,6 +62,10 @@ func run(cmd *cobra.Command, args []string) error {
 	if err != nil {
 		return err
 	}
+	metricsAddr, err := cmd.Flags().GetString("metrics")
+	if err != nil {
+		return err
+	}
 
 	ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
 	setupLog := ctrl.Log.WithName("setup")
@@ -73,7 +77,7 @@ func run(cmd *cobra.Command, args []string) error {
 	mgr, err := ctrl.NewManager(restConfig, manager.Options{
 		Scheme:                  setupScheme(),
 		Namespace:               namespace,
-		MetricsBindAddress:      defaultMetricsPort,
+		MetricsBindAddress:      metricsAddr,
 		LeaderElection:          !disableLeaderElection,
 		LeaderElectionNamespace: namespace,
 		LeaderElectionID:        leaderElectionConfigmapName,

Diff for: cmd/package-server-manager/start.go

@@ -16,6 +16,7 @@ func newStartCmd() *cobra.Command {
 	cmd.Flags().String("namespace", defaultNamespace, "configures the metadata.namespace that contains the packageserver csv resource")
 	cmd.Flags().String("health", defaultHealthCheckPort, "configures the health check port that the kubelet is configured to probe")
 	cmd.Flags().String("pprof", defaultPprofPort, "configures the pprof port that the process exposes")
+	cmd.Flags().String("metrics", defaultMetricsPort, "configures the metrics port that the process exposes")
 	cmd.Flags().Bool("disable-leader-election", false, "configures whether leader election will be disabled")
 
 	return cmd

Diff for: manifests/0000_50_olm_06-psm-operator.deployment.yaml

@@ -41,8 +41,12 @@ spec:
             - $(PACKAGESERVER_NAME)
             - --namespace
             - $(PACKAGESERVER_NAMESPACE)
+            - "--metrics=:9090"
           image: quay.io/operator-framework/olm@sha256:de396b540b82219812061d0d753440d5655250c621c753ed1dc67d6154741607
           imagePullPolicy: IfNotPresent
+          ports:
+            - containerPort: 9090
+              name: metrics
           env:
             - name: PACKAGESERVER_NAME
               value: packageserver

Diff for: manifests/0000_90_olm_00-service-monitor.yaml

@@ -98,3 +98,31 @@ spec:
   selector:
     matchLabels:
       app: catalog-operator
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: package-server-manager
+  namespace: openshift-operator-lifecycle-manager
+  labels:
+    app: package-server-manager
+  annotations:
+    include.release.openshift.io/ibm-cloud-managed: "true"
+    include.release.openshift.io/self-managed-high-availability: "true"
+spec:
+  podMetricsEndpoints:
+    - name: metrics
+      bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
+      interval: 30s
+      metricRelabelings:
+        - action: drop
+          regex: etcd_(debugging|disk|request|server).*
+          sourceLabels:
+            - __name__
+  jobLabel: component
+  namespaceSelector:
+    matchNames:
+      - openshift-operator-lifecycle-manager
+  selector:
+    matchLabels:
+      app: package-server-manager