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Merge pull request #66726 from liggitt/kubelet-server

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Automatic merge from submit-queue (batch tested with PRs 62444, 66358, 66724, 66726). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Move kubelet serving cert rotation to beta

xref https://github.com/kubernetes/features/issues/267

This is exercised in the alpha gke e2es, and can be enabled in the non-alpha gke e2es once it no longer requires an alpha feature gate.

```release-note
Kubelet serving certificate bootstrapping and rotation has been promoted to beta status.
```
This commit is contained in:
Kubernetes Submit Queue 2018-07-27 22:17:09 -07:00 committed by GitHub
commit 0c1f933693
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2 changed files with 3 additions and 2 deletions
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2
cmd/kubelet/app/options/options.go
View File

@ -478,7 +478,7 @@ func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfig
"If --tls-cert-file and --tls-private-key-file are not provided, a self-signed certificate and key "+
"are generated for the public address and saved to the directory passed to --cert-dir.")
fs.StringVar(&c.TLSPrivateKeyFile, "tls-private-key-file", c.TLSPrivateKeyFile, "File containing x509 private key matching --tls-cert-file.")
fs.BoolVar(&c.ServerTLSBootstrap, "rotate-server-certificates", c.ServerTLSBootstrap, "<Warning: alpha feature> Auto request and rotate the kubelet serving certificates by requesting new certificates from the kube-apiserver when the certificate expiration approaches. Requires the RotateKubeletServerCertificate feature gate to be enabled.")
fs.BoolVar(&c.ServerTLSBootstrap, "rotate-server-certificates", c.ServerTLSBootstrap, "Auto-request and rotate the kubelet serving certificates by requesting new certificates from the kube-apiserver when the certificate expiration approaches. Requires the RotateKubeletServerCertificate feature gate to be enabled, and approval of the submitted CertificateSigningRequest objects.")
tlsCipherPossibleValues := flag.TLSCipherPossibleValues()
fs.StringSliceVar(&c.TLSCipherSuites, "tls-cipher-suites", c.TLSCipherSuites,

3
pkg/features/kube_features.go
View File

@ -69,6 +69,7 @@ const (
// owner: @mikedanese
// alpha: v1.7
// beta: v1.12
//
// Gets a server certificate for the kubelet from the Certificate Signing
// Request API instead of generating one self signed and auto rotates the
@ -359,7 +360,7 @@ var defaultKubernetesFeatureGates = map[utilfeature.Feature]utilfeature.FeatureS
ExperimentalCriticalPodAnnotation: {Default: false, PreRelease: utilfeature.Alpha},
DevicePlugins: {Default: true, PreRelease: utilfeature.Beta},
TaintBasedEvictions: {Default: false, PreRelease: utilfeature.Alpha},
RotateKubeletServerCertificate: {Default: false, PreRelease: utilfeature.Alpha},
RotateKubeletServerCertificate: {Default: true, PreRelease: utilfeature.Beta},
RotateKubeletClientCertificate: {Default: true, PreRelease: utilfeature.Beta},
PersistentLocalVolumes: {Default: true, PreRelease: utilfeature.Beta},
LocalStorageCapacityIsolation: {Default: true, PreRelease: utilfeature.Beta},