/
start.go
145 lines (117 loc) · 3.69 KB
/
start.go
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/*
Copyright 2016 The Kubernetes Authors 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.
*/
package cmd
import (
"fmt"
"os"
"os/signal"
"github.com/golang/glog"
"k8s.io/apiserver/pkg/util/feature"
"k8s.io/kubernetes/pkg/capabilities"
"k8s.io/kubernetes/pkg/kubelet/types"
"k8s.io/minikube/pkg/localkube"
"k8s.io/minikube/pkg/version"
)
// The main instance of the current localkube server that is started
var Server *localkube.LocalkubeServer
func StartLocalkube() {
if Server.ShowVersion {
fmt.Println("localkube version:", version.GetVersion())
os.Exit(0)
}
if Server.ShowHostIP {
hostIP, _ := Server.GetHostIP()
fmt.Println("localkube host ip: ", hostIP.String())
os.Exit(0)
}
if os.Geteuid() != 0 {
fmt.Println("localkube should run as root!")
os.Exit(1)
}
SetupServer(Server)
Server.StartAll()
defer Server.StopAll()
interruptChan := make(chan os.Signal, 1)
signal.Notify(interruptChan, os.Interrupt)
<-interruptChan
fmt.Println("Shutting down...")
}
func SetupServer(s *localkube.LocalkubeServer) {
if s.ContainerRuntime == "remote" && s.RemoteRuntimeEndpoint == "" {
panic("Failed to connect to --container-runtime='remote' with no --container-runtime-endpoint")
}
// localkube flags can handle `--container-runtime=remote --remote-runtime-endpoint=/var/run/crio/crio.sock --remote-image-endpoint=/var/run/crio/crio.sock`,
// but this allows for a convenience of just e.g.`--container-runtime=crio` and the same for minikube
switch s.ContainerRuntime {
case "crio", "cri-o":
s.ContainerRuntime = "remote"
s.RemoteRuntimeEndpoint = "unix:///var/run/crio/crio.sock"
s.RemoteImageEndpoint = "unix:///var/run/crio/crio.sock"
}
if s.ShouldGenerateCerts {
if err := s.GenerateCerts(); err != nil {
fmt.Println("Failed to create certificates!")
panic(err)
}
}
if s.ShouldGenerateKubeconfig {
if err := s.GenerateKubeconfig(); err != nil {
fmt.Println("Failed to create kubeconfig!")
panic(err)
}
}
// Set feature gates
if s.FeatureGates != "" {
glog.Infof("Setting Feature Gates: %s", s.FeatureGates)
err := feature.DefaultFeatureGate.Set(s.FeatureGates)
if err != nil {
fmt.Printf("Error setting feature gates: %s", err)
}
}
// Setup capabilities. This can only be done once per binary.
allSources, _ := types.GetValidatedSources([]string{types.AllSource})
c := capabilities.Capabilities{
AllowPrivileged: true,
PrivilegedSources: capabilities.PrivilegedSources{
HostNetworkSources: allSources,
HostIPCSources: allSources,
HostPIDSources: allSources,
},
}
capabilities.Initialize(c)
// setup etcd
etcd, err := s.NewEtcd(s.GetEtcdDataDirectory())
if err != nil {
panic(err)
}
// Start etcd first
etcd.Start()
// setup access to etcd
netIP, _ := s.GetHostIP()
fmt.Printf("localkube host ip address: %s\n", netIP.String())
// setup apiserver
apiserver := s.NewAPIServer()
s.AddServer(apiserver)
// setup controller-manager
controllerManager := s.NewControllerManagerServer()
s.AddServer(controllerManager)
// setup scheduler
scheduler := s.NewSchedulerServer()
s.AddServer(scheduler)
// setup kubelet
kubelet := s.NewKubeletServer()
s.AddServer(kubelet)
// setup proxy
proxy := s.NewProxyServer()
s.AddServer(proxy)
}