Promote StartupProbe to beta for 1.18

Author: matthyx

api/openapi-spec/swagger.json

@@ -525,6 +525,7 @@ const (
 
 	// owner: @matthyx
 	// alpha: v1.16
+	// beta: v1.18
 	//
 	// Enables the startupProbe in kubelet worker.
 	StartupProbe featuregate.Feature = "StartupProbe"
@@ -629,7 +630,7 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 	IPv6DualStack:                                  {Default: false, PreRelease: featuregate.Alpha},
 	EndpointSlice:                                  {Default: false, PreRelease: featuregate.Beta},
 	EvenPodsSpread:                                 {Default: false, PreRelease: featuregate.Alpha},
-	StartupProbe:                                   {Default: false, PreRelease: featuregate.Alpha},
+	StartupProbe:                                   {Default: true, PreRelease: featuregate.Beta},
 	AllowInsecureBackendProxy:                      {Default: true, PreRelease: featuregate.Beta},
 	PodDisruptionBudget:                            {Default: true, PreRelease: featuregate.Beta},
 	ServiceTopology:                                {Default: false, PreRelease: featuregate.Alpha},

pkg/features/kube_features.go

@@ -2203,7 +2203,7 @@ type Container struct {
 	// This can be used to provide different probe parameters at the beginning of a Pod's lifecycle,
 	// when it might take a long time to load data or warm a cache, than during steady-state operation.
 	// This cannot be updated.
-	// This is an alpha feature enabled by the StartupProbe feature flag.
+	// This is a beta feature enabled by the StartupProbe feature flag.
 	// More info: https://kubernetes.io/docs/concepts/workloads/pods/pod-lifecycle#container-probes
 	// +optional
 	StartupProbe *Probe `json:"startupProbe,omitempty" protobuf:"bytes,22,opt,name=startupProbe"`

staging/src/k8s.io/api/core/v1/generated.proto

@@ -37,7 +37,7 @@ const (
 	defaultObservationTimeout = time.Minute * 4
 )
 
-var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive] [NodeAlphaFeature:StartupProbe]", func() {
+var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive]", func() {
 	f := framework.NewDefaultFramework("startup-probe-test")
 	var podClient *framework.PodClient
 	ginkgo.BeforeEach(func() {
@@ -61,7 +61,7 @@ var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive] [NodeAlphaFea
 			Testname: Pod startup probe restart
 			Description: A Pod is created with a failing startup probe. The Pod MUST be killed and restarted incrementing restart count to 1, even if liveness would succeed.
 		*/
-		framework.ConformanceIt("should be restarted startup probe fails [NodeConformance]", func() {
+		ginkgo.It("should be restarted startup probe fails", func() {
 			cmd := []string{"/bin/sh", "-c", "sleep 600"}
 			livenessProbe := &v1.Probe{
 				Handler: v1.Handler{
@@ -90,7 +90,7 @@ var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive] [NodeAlphaFea
 			Testname: Pod liveness probe delayed (long) by startup probe
 			Description: A Pod is created with failing liveness and startup probes. Liveness probe MUST NOT fail until startup probe expires.
 		*/
-		framework.ConformanceIt("should *not* be restarted by liveness probe because startup probe delays it [NodeConformance]", func() {
+		ginkgo.It("should *not* be restarted by liveness probe because startup probe delays it", func() {
 			cmd := []string{"/bin/sh", "-c", "sleep 600"}
 			livenessProbe := &v1.Probe{
 				Handler: v1.Handler{
@@ -119,7 +119,7 @@ var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive] [NodeAlphaFea
 			Testname: Pod liveness probe fails after startup success
 			Description: A Pod is created with failing liveness probe and delayed startup probe that uses ‘exec’ command to cat /temp/health file. The Container is started by creating /tmp/startup after 10 seconds, triggering liveness probe to fail. The Pod MUST now be killed and restarted incrementing restart count to 1.
 		*/
-		framework.ConformanceIt("should be restarted by liveness probe after startup probe enables it [NodeConformance]", func() {
+		ginkgo.It("should be restarted by liveness probe after startup probe enables it", func() {
 			cmd := []string{"/bin/sh", "-c", "sleep 10; echo ok >/tmp/startup; sleep 600"}
 			livenessProbe := &v1.Probe{
 				Handler: v1.Handler{
@@ -148,7 +148,7 @@ var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive] [NodeAlphaFea
 			Testname: Pod readiness probe, delayed by startup probe
 			Description: A Pod is created with startup and readiness probes. The Container is started by creating /tmp/startup after 45 seconds, delaying the ready state by this amount of time. This is similar to the "Pod readiness probe, with initial delay" test.
 		*/
-		framework.ConformanceIt("should not be ready until startupProbe succeeds [NodeConformance]", func() {
+		ginkgo.It("should not be ready until startupProbe succeeds", func() {
 			cmd := []string{"/bin/sh", "-c", "echo ok >/tmp/health; sleep 45; echo ok >/tmp/startup; sleep 600"}
 			readinessProbe := &v1.Probe{
 				Handler: v1.Handler{