✨ (go/v3-alpha) Add the liveness and readiness probe in the manager deployment

pkg/plugins/golang/v3/scaffolds/internal/templates/config/kdefault/manager_auth_proxy_patch.go

@@ -67,6 +67,7 @@ spec:
 {{- if not .ComponentConfig }}
       - name: manager
         args:
+        - "--health-probe-bind-address=:8081"
         - "--metrics-bind-address=127.0.0.1:8080"
         - "--leader-elect"
 {{- end }}

pkg/plugins/golang/v3/scaffolds/internal/templates/config/manager/config.go

@@ -81,6 +81,18 @@ spec:
         name: manager
         securityContext:
           allowPrivilegeEscalation: false
+        livenessProbe:
+          httpGet:
+            path: /readyz
+            port: 8081
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        readinessProbe:
+          httpGet:
+            path: /healthz
+            port: 8081
+          initialDelaySeconds: 5
+          periodSeconds: 10
         resources:
           limits:
             cpu: 100m

pkg/plugins/golang/v3/scaffolds/internal/templates/config/manager/controller_manager_config.go

@@ -46,6 +46,8 @@ func (f *ControllerManagerConfig) SetTemplateDefaults() error {
 
 const controllerManagerConfigTemplate = `apiVersion: controller-runtime.sigs.k8s.io/v1alpha1
 kind: ControllerManagerConfig
+health:
+  healthProbeBindAddress: :8081
 metrics:
   bindAddress: 127.0.0.1:8080
 webhook:

pkg/plugins/golang/v3/scaffolds/internal/templates/main.go

@@ -199,6 +199,7 @@ import (
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	%s
 )
 
@@ -217,7 +218,9 @@ func main() {
 {{- if not .ComponentConfig }}
 	var metricsAddr string
 	var enableLeaderElection bool
+	var probeAddr string
 	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
+	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
 		"Enable leader election for controller manager. " +
 		"Enabling this will ensure there is only one active controller manager.")
@@ -238,11 +241,12 @@ func main() {
 
 {{ if not .ComponentConfig }}
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
-		Scheme:             scheme,
-		MetricsBindAddress: metricsAddr,
-		Port:               9443,
-		LeaderElection:     enableLeaderElection,
-		LeaderElectionID:   "{{ hashFNV .Repo }}.{{ .Domain }}",
+		Scheme:                 scheme,
+		MetricsBindAddress:     metricsAddr,
+		Port:                   9443,
+		HealthProbeBindAddress: probeAddr,
+		LeaderElection:         enableLeaderElection,
+		LeaderElectionID:       "{{ hashFNV .Repo }}.{{ .Domain }}",
 	})
 {{- else }}
 	var err error
@@ -264,6 +268,15 @@ func main() {
 
 	%s
 
+	if err := mgr.AddHealthzCheck("health", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("check", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
 		setupLog.Error(err, "problem running manager")

testdata/project-v3-addon/config/default/manager_auth_proxy_patch.yaml

@@ -21,5 +21,6 @@ spec:
           name: https
       - name: manager
         args:
+        - "--health-probe-bind-address=:8081"
         - "--metrics-bind-address=127.0.0.1:8080"
         - "--leader-elect"

testdata/project-v3-addon/config/manager/controller_manager_config.yaml

@@ -1,5 +1,7 @@
 apiVersion: controller-runtime.sigs.k8s.io/v1alpha1
 kind: ControllerManagerConfig
+health:
+  healthProbeBindAddress: :8081
 metrics:
   bindAddress: 127.0.0.1:8080
 webhook:

testdata/project-v3-addon/config/manager/manager.yaml

@@ -33,6 +33,18 @@ spec:
         name: manager
         securityContext:
           allowPrivilegeEscalation: false
+        livenessProbe:
+          httpGet:
+            path: /readyz
+            port: 8081
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        readinessProbe:
+          httpGet:
+            path: /healthz
+            port: 8081
+          initialDelaySeconds: 5
+          periodSeconds: 10
         resources:
           limits:
             cpu: 100m

testdata/project-v3-addon/main.go

@@ -28,6 +28,7 @@ import (
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 
 	crewv1 "sigs.k8s.io/kubebuilder/testdata/project-v3-addon/api/v1"
@@ -50,7 +51,9 @@ func init() {
 func main() {
 	var metricsAddr string
 	var enableLeaderElection bool
+	var probeAddr string
 	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
+	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
 		"Enable leader election for controller manager. "+
 			"Enabling this will ensure there is only one active controller manager.")
@@ -63,11 +66,12 @@ func main() {
 	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
 
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
-		Scheme:             scheme,
-		MetricsBindAddress: metricsAddr,
-		Port:               9443,
-		LeaderElection:     enableLeaderElection,
-		LeaderElectionID:   "52ea9610.testproject.org",
+		Scheme:                 scheme,
+		MetricsBindAddress:     metricsAddr,
+		Port:                   9443,
+		HealthProbeBindAddress: probeAddr,
+		LeaderElection:         enableLeaderElection,
+		LeaderElectionID:       "52ea9610.testproject.org",
 	})
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
@@ -100,6 +104,15 @@ func main() {
 	}
 	// +kubebuilder:scaffold:builder
 
+	if err := mgr.AddHealthzCheck("health", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("check", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
 		setupLog.Error(err, "problem running manager")

testdata/project-v3-config/config/manager/controller_manager_config.yaml

@@ -1,5 +1,7 @@
 apiVersion: controller-runtime.sigs.k8s.io/v1alpha1
 kind: ControllerManagerConfig
+health:
+  healthProbeBindAddress: :8081
 metrics:
   bindAddress: 127.0.0.1:8080
 webhook:

testdata/project-v3-config/config/manager/manager.yaml

@@ -31,6 +31,18 @@ spec:
         name: manager
         securityContext:
           allowPrivilegeEscalation: false
+        livenessProbe:
+          httpGet:
+            path: /readyz
+            port: 8081
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        readinessProbe:
+          httpGet:
+            path: /healthz
+            port: 8081
+          initialDelaySeconds: 5
+          periodSeconds: 10
         resources:
           limits:
             cpu: 100m

testdata/project-v3-config/main.go

@@ -28,6 +28,7 @@ import (
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 
 	crewv1 "sigs.k8s.io/kubebuilder/testdata/project-v3-config/api/v1"
@@ -123,6 +124,15 @@ func main() {
 	}
 	// +kubebuilder:scaffold:builder
 
+	if err := mgr.AddHealthzCheck("health", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("check", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
 		setupLog.Error(err, "problem running manager")

testdata/project-v3-multigroup/config/default/manager_auth_proxy_patch.yaml

@@ -21,5 +21,6 @@ spec:
           name: https
       - name: manager
         args:
+        - "--health-probe-bind-address=:8081"
         - "--metrics-bind-address=127.0.0.1:8080"
         - "--leader-elect"

testdata/project-v3-multigroup/config/manager/controller_manager_config.yaml

@@ -1,5 +1,7 @@
 apiVersion: controller-runtime.sigs.k8s.io/v1alpha1
 kind: ControllerManagerConfig
+health:
+  healthProbeBindAddress: :8081
 metrics:
   bindAddress: 127.0.0.1:8080
 webhook:

testdata/project-v3-multigroup/config/manager/manager.yaml

@@ -33,6 +33,18 @@ spec:
         name: manager
         securityContext:
           allowPrivilegeEscalation: false
+        livenessProbe:
+          httpGet:
+            path: /readyz
+            port: 8081
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        readinessProbe:
+          httpGet:
+            path: /healthz
+            port: 8081
+          initialDelaySeconds: 5
+          periodSeconds: 10
         resources:
           limits:
             cpu: 100m

testdata/project-v3-multigroup/main.go

@@ -28,6 +28,7 @@ import (
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 
 	crewv1 "sigs.k8s.io/kubebuilder/testdata/project-v3-multigroup/apis/crew/v1"
@@ -69,7 +70,9 @@ func init() {
 func main() {
 	var metricsAddr string
 	var enableLeaderElection bool
+	var probeAddr string
 	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
+	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
 		"Enable leader election for controller manager. "+
 			"Enabling this will ensure there is only one active controller manager.")
@@ -82,11 +85,12 @@ func main() {
 	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
 
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
-		Scheme:             scheme,
-		MetricsBindAddress: metricsAddr,
-		Port:               9443,
-		LeaderElection:     enableLeaderElection,
-		LeaderElectionID:   "14be1926.testproject.org",
+		Scheme:                 scheme,
+		MetricsBindAddress:     metricsAddr,
+		Port:                   9443,
+		HealthProbeBindAddress: probeAddr,
+		LeaderElection:         enableLeaderElection,
+		LeaderElectionID:       "14be1926.testproject.org",
 	})
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
@@ -187,6 +191,15 @@ func main() {
 	}
 	// +kubebuilder:scaffold:builder
 
+	if err := mgr.AddHealthzCheck("health", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("check", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
 		setupLog.Error(err, "problem running manager")

testdata/project-v3/config/default/manager_auth_proxy_patch.yaml

@@ -21,5 +21,6 @@ spec:
           name: https
       - name: manager
         args:
+        - "--health-probe-bind-address=:8081"
         - "--metrics-bind-address=127.0.0.1:8080"
         - "--leader-elect"

testdata/project-v3/config/manager/controller_manager_config.yaml

@@ -1,5 +1,7 @@
 apiVersion: controller-runtime.sigs.k8s.io/v1alpha1
 kind: ControllerManagerConfig
+health:
+  healthProbeBindAddress: :8081
 metrics:
   bindAddress: 127.0.0.1:8080
 webhook:

testdata/project-v3/config/manager/manager.yaml

@@ -33,6 +33,18 @@ spec:
         name: manager
         securityContext:
           allowPrivilegeEscalation: false
+        livenessProbe:
+          httpGet:
+            path: /readyz
+            port: 8081
+          initialDelaySeconds: 15
+          periodSeconds: 20
+        readinessProbe:
+          httpGet:
+            path: /healthz
+            port: 8081
+          initialDelaySeconds: 5
+          periodSeconds: 10
         resources:
           limits:
             cpu: 100m

testdata/project-v3/main.go

@@ -28,6 +28,7 @@ import (
 	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 
 	crewv1 "sigs.k8s.io/kubebuilder/testdata/project-v3/api/v1"
@@ -50,7 +51,9 @@ func init() {
 func main() {
 	var metricsAddr string
 	var enableLeaderElection bool
+	var probeAddr string
 	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
+	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
 		"Enable leader election for controller manager. "+
 			"Enabling this will ensure there is only one active controller manager.")
@@ -63,11 +66,12 @@ func main() {
 	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
 
 	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
-		Scheme:             scheme,
-		MetricsBindAddress: metricsAddr,
-		Port:               9443,
-		LeaderElection:     enableLeaderElection,
-		LeaderElectionID:   "dd1da13f.testproject.org",
+		Scheme:                 scheme,
+		MetricsBindAddress:     metricsAddr,
+		Port:                   9443,
+		HealthProbeBindAddress: probeAddr,
+		LeaderElection:         enableLeaderElection,
+		LeaderElectionID:       "dd1da13f.testproject.org",
 	})
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
@@ -120,6 +124,15 @@ func main() {
 	}
 	// +kubebuilder:scaffold:builder
 
+	if err := mgr.AddHealthzCheck("health", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up health check")
+		os.Exit(1)
+	}
+	if err := mgr.AddReadyzCheck("check", healthz.Ping); err != nil {
+		setupLog.Error(err, "unable to set up ready check")
+		os.Exit(1)
+	}
+
 	setupLog.Info("starting manager")
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
 		setupLog.Error(err, "problem running manager")