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Merge pull request #88290 from tallclair/spr-deprecate

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Start deprecation process for StreamingProxyRedirects
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Kubernetes Prow Robot 2020-02-21 10:32:45 -08:00 committed by GitHub
commit 20e6883a75
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3 changed files with 6 additions and 2 deletions
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2
pkg/features/kube_features.go
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@ -627,7 +627,7 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
// inherited features from generic apiserver, relisted here to get a conflict if it is changed
// unintentionally on either side:
genericfeatures.StreamingProxyRedirects: {Default: true, PreRelease: featuregate.Beta},
genericfeatures.StreamingProxyRedirects: {Default: true, PreRelease: featuregate.Deprecated},
genericfeatures.ValidateProxyRedirects: {Default: true, PreRelease: featuregate.Beta},
genericfeatures.AdvancedAuditing: {Default: true, PreRelease: featuregate.GA},
genericfeatures.DynamicAuditing: {Default: false, PreRelease: featuregate.Alpha},

1
pkg/kubelet/config/flags.go
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@ -86,6 +86,7 @@ func (s *ContainerRuntimeOptions) AddFlags(fs *pflag.FlagSet) {
fs.StringVar(&s.ContainerRuntime, "container-runtime", s.ContainerRuntime, "The container runtime to use. Possible values: 'docker', 'remote'.")
fs.StringVar(&s.RuntimeCgroups, "runtime-cgroups", s.RuntimeCgroups, "Optional absolute name of cgroups to create and run the runtime in.")
fs.BoolVar(&s.RedirectContainerStreaming, "redirect-container-streaming", s.RedirectContainerStreaming, "Enables container streaming redirect. If false, kubelet will proxy container streaming data between apiserver and container runtime; if true, kubelet will return an http redirect to apiserver, and apiserver will access container runtime directly. The proxy approach is more secure, but introduces some overhead. The redirect approach is more performant, but less secure because the connection between apiserver and container runtime may not be authenticated.")
fs.MarkDeprecated("redirect-container-streaming", "Container streaming redirection will be removed from the kubelet in v1.20, and this flag will be removed in v1.22. For more details, see http://git.k8s.io/enhancements/keps/sig-node/20191205-container-streaming-requests.md")
// Docker-specific settings.
fs.BoolVar(&s.ExperimentalDockershim, "experimental-dockershim", s.ExperimentalDockershim, "Enable dockershim only mode. In this mode, kubelet will only start dockershim without any other functionalities. This flag only serves test purpose, please do not use it unless you are conscious of what you are doing. [default=false]")

5
staging/src/k8s.io/apiserver/pkg/features/kube_features.go
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@ -33,9 +33,12 @@ const (
// owner: @tallclair
// alpha: v1.5
// beta: v1.6
// deprecated: v1.18
//
// StreamingProxyRedirects controls whether the apiserver should intercept (and follow)
// redirects from the backend (Kubelet) for streaming requests (exec/attach/port-forward).
//
// This feature is deprecated, and will be removed in v1.22.
StreamingProxyRedirects featuregate.Feature = "StreamingProxyRedirects"
// owner: @tallclair
@ -156,7 +159,7 @@ func init() {
// To add a new feature, define a key for it above and add it here. The features will be
// available throughout Kubernetes binaries.
var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureSpec{
StreamingProxyRedirects: {Default: true, PreRelease: featuregate.Beta},
StreamingProxyRedirects: {Default: true, PreRelease: featuregate.Deprecated},
ValidateProxyRedirects: {Default: true, PreRelease: featuregate.Beta},
AdvancedAuditing: {Default: true, PreRelease: featuregate.GA},
DynamicAuditing: {Default: false, PreRelease: featuregate.Alpha},