Setup health endpoints

Author: bastjan

main.go

@@ -40,6 +40,7 @@ import (
 	"k8s.io/utils/ptr"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/cache"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 	"sigs.k8s.io/controller-runtime/pkg/metrics/server"
 
@@ -146,6 +147,15 @@ func runManager(metricsAddr, probeAddr, watchNamespace string, enableLeaderElect
 		os.Exit(1)
 	}
 
+	if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	versionString := "unknown"
 	if v, ok := debug.ReadBuildInfo(); ok {
 		versionString = fmt.Sprintf("%s (%s)", v.Main.Version, v.GoVersion)
@@ -226,6 +236,15 @@ func runMachineAPIControllersManager(metricsAddr, probeAddr, watchNamespace stri
 		os.Exit(1)
 	}
 
+	if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	if err := (&controllers.MachineAPIControllersReconciler{
 		Client: mgr.GetClient(),
 		Scheme: mgr.GetScheme(),