Merge pull request #53816 from marun/remove-federation

Automatic merge from submit-queue (batch tested with PRs 54112, 54150, 53816, 54321, 54338). 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>.

Remove federation

This PR removes the federation codebase and associated tooling from the tree.

The first commit just removes the `federation` path and should be uncontroversial.  The second commit removes references and associated tooling and suggests careful review.

Requirements for merge:

- [x] Bazel jobs no longer hard-code federation as a target ([test infra #4983](https://github.com/kubernetes/test-infra/pull/4983))
- [x] `federation-e2e` jobs are not run by default for k/k

**Release note**:

```release-note
Development of Kubernetes Federation has moved to github.com/kubernetes/federation.  This move out of tree also means that Federation will begin releasing separately from Kubernetes.  The impact of this is Federation-specific behavior will no longer be included in kubectl, kubefed will no longer be released as part of Kubernetes, and the Federation servers will no longer be included in the hyperkube binary and image.
```

cc: @kubernetes/sig-multicluster-pr-reviews @kubernetes/sig-testing-pr-reviews

cmd/hyperkube/BUILD

@@ -30,8 +30,6 @@ go_test(
 go_library(
     name = "go_default_library",
     srcs = [
-        "federation-apiserver.go",
-        "federation-controller-manager.go",
         "hyperkube.go",
         "kube-aggregator.go",
         "kube-apiserver.go",
@@ -52,10 +50,6 @@ go_library(
         "//cmd/kube-proxy/app:go_default_library",
         "//cmd/kubelet/app:go_default_library",
         "//cmd/kubelet/app/options:go_default_library",
-        "//federation/cmd/federation-apiserver/app:go_default_library",
-        "//federation/cmd/federation-apiserver/app/options:go_default_library",
-        "//federation/cmd/federation-controller-manager/app:go_default_library",
-        "//federation/cmd/federation-controller-manager/app/options:go_default_library",
         "//pkg/client/metrics/prometheus:go_default_library",
         "//pkg/kubectl/cmd:go_default_library",
         "//pkg/kubectl/cmd/util:go_default_library",

cmd/hyperkube/federation-apiserver.go

@@ -1,39 +0,0 @@
-/*
-Copyright 2016 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package main
-
-import (
-	"k8s.io/kubernetes/federation/cmd/federation-apiserver/app"
-	"k8s.io/kubernetes/federation/cmd/federation-apiserver/app/options"
-)
-
-// NewFederationAPIServer creates a new hyperkube Server object that includes the
-// description and flags.
-func NewFederationAPIServer() *Server {
-	s := options.NewServerRunOptions()
-
-	hks := Server{
-		SimpleUsage: "federation-apiserver",
-		Long:        "The API entrypoint for the federation control plane",
-		Run: func(_ *Server, args []string, stopCh <-chan struct{}) error {
-			return app.Run(s, stopCh)
-		},
-		RespectsStopCh: true,
-	}
-	s.AddFlags(hks.Flags())
-	return &hks
-}

cmd/hyperkube/federation-controller-manager.go

@@ -1,38 +0,0 @@
-/*
-Copyright 2016 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package main
-
-import (
-	"k8s.io/kubernetes/federation/cmd/federation-controller-manager/app"
-	"k8s.io/kubernetes/federation/cmd/federation-controller-manager/app/options"
-)
-
-// NewFederationCMServer creates a new hyperkube Server object that includes the
-// description and flags.
-func NewFederationCMServer() *Server {
-	s := options.NewCMServer()
-
-	hks := Server{
-		SimpleUsage: "federation-controller-manager",
-		Long:        "Controller manager for federation control plane. Manages federation service endpoints and controllers",
-		Run: func(_ *Server, args []string, stopCh <-chan struct{}) error {
-			return app.Run(s)
-		},
-	}
-	s.AddFlags(hks.Flags())
-	return &hks
-}

cmd/hyperkube/main.go

@@ -46,9 +46,5 @@ func main() {
 	hk.AddServer(NewKubeProxy())
 	hk.AddServer(NewKubeAggregator())
 
-	//Federation servers
-	hk.AddServer(NewFederationAPIServer())
-	hk.AddServer(NewFederationCMServer())
-
 	hk.RunToExit(os.Args)
 }