Convert kube-apiserver to hyperkube.

cmd/hyperkube/hyperkube.go

+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+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.
+*/
+
+// A binary that can morph into all of the other kubernetes binaries. You can
+// also soft-link to it busybox style.
+package main
+
+import (
+	"os"
+
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/hyperkube"
+	apiserver "github.com/GoogleCloudPlatform/kubernetes/pkg/master/server"
+)
+
+func main() {
+	hk := hyperkube.HyperKube{
+		Name: "hyperkube",
+		Long: "This is an all-in-one binary that can run any of the various Kubernetes servers.",
+	}
+
+	hk.AddServer(apiserver.NewHyperkubeServer())
+
+	hk.RunToExit(os.Args)
+}

docs/man/kube-apiserver.1.md

@@ -38,9 +38,6 @@ The the kube-apiserver several options.
 **--etcd_servers**=[]
 	List of etcd servers to watch (http://ip:port), comma separated
 
-**--health_check_minions**=
-	If true, health check minions and filter unhealthy ones. Default true.
-
 **--log_backtrace_at=**:0
 	when logging hits line file:N, emit a stack trace
 

pkg/hyperkube/hyperkube.go

@@ -26,6 +26,7 @@ import (
 	"path"
 
 	"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
+	"github.com/GoogleCloudPlatform/kubernetes/pkg/version/verflag"
 
 	"github.com/spf13/pflag"
 )
@@ -128,6 +129,9 @@ func (hk *HyperKube) Run(args []string) error {
 			hk.Usage()
 			return err
 		}
+
+		verflag.PrintAndExitIfRequested()
+
 		args = baseFlags.Args()
 		if len(args) > 0 && len(args[0]) > 0 {
 			serverName = args[0]
@@ -135,7 +139,7 @@ func (hk *HyperKube) Run(args []string) error {
 			args = args[1:]
 		} else {
 			err = errors.New("No server specified")
-			hk.Println("Error", err)
+			hk.Printf("Error: %v\n\n", err)
 			hk.Usage()
 			return err
 		}
@@ -143,7 +147,7 @@ func (hk *HyperKube) Run(args []string) error {
 
 	s, err := hk.FindServer(serverName)
 	if err != nil {
-		hk.Println("Error:", err)
+		hk.Printf("Error: %v\n\n", err)
 		hk.Usage()
 		return err
 	}
@@ -152,13 +156,17 @@ func (hk *HyperKube) Run(args []string) error {
 	err = s.Flags().Parse(args)
 	if err != nil || hk.helpFlagVal {
 		if err != nil {
-			hk.Println("Error:", err)
+			hk.Printf("Error: %v\n\n", err)
 		}
 		s.Usage()
 		return err
 	}
 
+	verflag.PrintAndExitIfRequested()
+
 	util.InitLogs()
+	defer util.FlushLogs()
+
 	err = s.Run(s, s.Flags().Args())
 	if err != nil {
 		hk.Println("Error:", err)
@@ -167,6 +175,15 @@ func (hk *HyperKube) Run(args []string) error {
 	return err
 }
 
+// RunToExit will run the hyperkube and then call os.Exit with an appropriate exit code.
+func (hk *HyperKube) RunToExit(args []string) {
+	err := hk.Run(args)
+	if err != nil {
+		os.Exit(1)
+	}
+	os.Exit(0)
+}
+
 // Usage will write out a summary for all servers that this binary supports.
 func (hk *HyperKube) Usage() {
 	tt := `{{if .Long}}{{.Long | trim | wrap ""}}

pkg/hyperkube/server.go

@@ -38,7 +38,7 @@ type Server struct {
 	hk    *HyperKube
 }
 
-// FullUsage returns the full usage string including all of the flags.
+// Usage returns the full usage string including all of the flags.
 func (s *Server) Usage() error {
 	tt := `{{if .Long}}{{.Long | trim | wrap ""}}
 {{end}}Usage:

cmd/kube-apiserver/plugins.go → pkg/master/server/plugins.go

@@ -14,18 +14,20 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package main
+package server
 
 // This file exists to force the desired plugin implementations to be linked.
 // This should probably be part of some configuration fed into the build for a
 // given binary target.
 import (
+	// Cloud providers
 	_ "github.com/GoogleCloudPlatform/kubernetes/pkg/cloudprovider/aws"
 	_ "github.com/GoogleCloudPlatform/kubernetes/pkg/cloudprovider/gce"
 	_ "github.com/GoogleCloudPlatform/kubernetes/pkg/cloudprovider/openstack"
 	_ "github.com/GoogleCloudPlatform/kubernetes/pkg/cloudprovider/ovirt"
 	_ "github.com/GoogleCloudPlatform/kubernetes/pkg/cloudprovider/vagrant"
 
+	// Admission policies
 	_ "github.com/GoogleCloudPlatform/kubernetes/plugin/pkg/admission/admit"
 	_ "github.com/GoogleCloudPlatform/kubernetes/plugin/pkg/admission/deny"
 	_ "github.com/GoogleCloudPlatform/kubernetes/plugin/pkg/admission/limitranger"