Merge pull request #1953 from CharlesQQ/karmada-agent-metrics

feat: agent add metrics-bind-address flag

cmd/agent/app/agent.go

@@ -143,6 +143,7 @@ func run(ctx context.Context, karmadaConfig karmadactl.KarmadaConfig, opts *opti
 		LeaderElectionID:           fmt.Sprintf("karmada-agent-%s", opts.ClusterName),
 		LeaderElectionNamespace:    opts.LeaderElection.ResourceNamespace,
 		LeaderElectionResourceLock: opts.LeaderElection.ResourceLock,
+		MetricsBindAddress:         opts.MetricsBindAddress,
 		Controller: v1alpha1.ControllerConfigurationSpec{
 			GroupKindConcurrency: map[string]int{
 				workv1alpha1.SchemeGroupVersion.WithKind("Work").GroupKind().String():       opts.ConcurrentWorkSyncs,

cmd/agent/app/options/options.go

@@ -64,6 +64,11 @@ type Options struct {
 	// ConcurrentWorkSyncs is the number of work objects that are
 	// allowed to sync concurrently.
 	ConcurrentWorkSyncs int
+	// MetricsBindAddress is the TCP address that the controller should bind to
+	// for serving prometheus metrics.
+	// It can be set to "0" to disable the metrics serving.
+	// Defaults to ":8080".
+	MetricsBindAddress string
 
 	RateLimiterOpts ratelimiterflag.Options
 }
@@ -111,5 +116,6 @@ func (o *Options) AddFlags(fs *pflag.FlagSet, allControllers []string) {
 	fs.DurationVar(&o.ResyncPeriod.Duration, "resync-period", 0, "Base frequency the informers are resynced.")
 	fs.IntVar(&o.ConcurrentClusterSyncs, "concurrent-cluster-syncs", 5, "The number of Clusters that are allowed to sync concurrently.")
 	fs.IntVar(&o.ConcurrentWorkSyncs, "concurrent-work-syncs", 5, "The number of Works that are allowed to sync concurrently.")
+	fs.StringVar(&o.MetricsBindAddress, "metrics-bind-address", ":8080", "The TCP address that the controller should bind to for serving prometheus metrics(e.g. 127.0.0.1:8088, :8088)")
 	o.RateLimiterOpts.AddFlags(fs)
 }