Golang cadvisor.New函数代码示例

// containerRuntime checks that a suitable container runtime is installed and recognized by cadvisor: docker 1.7-1.9
func containerRuntime() error {
	dockerRegex, err := regexp.Compile(dockerVersionRegex)
	if err != nil {
		// This should never happen and can only be fixed by changing the code
		panic(err)
	}

	// Setup cadvisor to check the container environment
	c, err := cadvisor.New(0 /*don't start the http server*/)
	if err != nil {
		return printError("Container Runtime Check: %s Could not start cadvisor %v", failed, err)
	}

	vi, err := c.VersionInfo()
	if err != nil {
		return printError("Container Runtime Check: %s Could not get VersionInfo %v", failed, err)
	}

	d := vi.DockerVersion
	if !dockerRegex.Match([]byte(d)) {
		return printError(
			"Container Runtime Check: %s Docker version %s does not matching %s.  You may need to run as root or the "+
				"user the kubelet will run under.", failed, d, dockerVersionRegex)
	}

	return printSuccess("Container Runtime Check: %s", success)
}

func NewMesosCadvisor(cores int, mem uint64, port uint, runtime string) (*MesosCadvisor, error) {
	c, err := cadvisor.New(port, runtime, "/var/lib/mesos")
	if err != nil {
		return nil, err
	}
	return &MesosCadvisor{c, cores, mem}, nil
}

func NewMesosCadvisor(cores int, mem uint64, port uint) (*MesosCadvisor, error) {
	c, err := cadvisor.New(port)
	if err != nil {
		return nil, err
	}
	return &MesosCadvisor{c, cores, mem}, nil
}

// Run runs the specified KubeletServer for the given KubeletConfig.  This should never exit.
// The kcfg argument may be nil - if so, it is initialized from the settings on KubeletServer.
// Otherwise, the caller is assumed to have set up the KubeletConfig object and all defaults
// will be ignored.
func (s *KubeletServer) Run(kcfg *KubeletConfig) error {
	if kcfg == nil {
		cfg, err := s.UnsecuredKubeletConfig()
		if err != nil {
			return err
		}
		kcfg = cfg

		clientConfig, err := s.CreateAPIServerClientConfig()
		if err == nil {
			kcfg.KubeClient, err = client.New(clientConfig)
		}
		if err != nil && len(s.APIServerList) > 0 {
			glog.Warningf("No API client: %v", err)
		}

		cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
		if err != nil {
			return err
		}
		glog.V(2).Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
		kcfg.Cloud = cloud
	}

	if kcfg.CadvisorInterface == nil {
		ca, err := cadvisor.New(s.CadvisorPort)
		if err != nil {
			return err
		}
		kcfg.CadvisorInterface = ca
	}

	util.ReallyCrash = s.ReallyCrashForTesting
	rand.Seed(time.Now().UTC().UnixNano())

	credentialprovider.SetPreferredDockercfgPath(s.RootDirectory)

	glog.V(2).Infof("Using root directory: %v", s.RootDirectory)

	// TODO(vmarmol): Do this through container config.
	oomAdjuster := oom.NewOomAdjuster()
	if err := oomAdjuster.ApplyOomScoreAdj(0, s.OOMScoreAdj); err != nil {
		glog.Warning(err)
	}

	if err := RunKubelet(kcfg, nil); err != nil {
		return err
	}

	if s.HealthzPort > 0 {
		healthz.DefaultHealthz()
		go util.Until(func() {
			err := http.ListenAndServe(net.JoinHostPort(s.HealthzBindAddress.String(), strconv.Itoa(s.HealthzPort)), nil)
			if err != nil {
				glog.Errorf("Starting health server failed: %v", err)
			}
		}, 5*time.Second, util.NeverStop)
	}

	if s.RunOnce {
		return nil
	}

	// run forever
	select {}
}

// Run runs the specified KubeletExecutorServer.
func (s *KubeletExecutorServer) Run(hks hyperkube.Interface, _ []string) error {
	rand.Seed(time.Now().UTC().UnixNano())

	oomAdjuster := oom.NewOOMAdjuster()
	if err := oomAdjuster.ApplyOOMScoreAdj(0, s.OOMScoreAdj); err != nil {
		log.Info(err)
	}

	// empty string for the docker and system containers (= cgroup paths). This
	// stops the kubelet taking any control over other system processes.
	s.SystemContainer = ""
	s.DockerDaemonContainer = ""

	// create apiserver client
	var apiclient *client.Client
	clientConfig, err := s.CreateAPIServerClientConfig()
	if err == nil {
		apiclient, err = client.New(clientConfig)
	}
	if err != nil {
		// required for k8sm since we need to send api.Binding information
		// back to the apiserver
		log.Fatalf("No API client: %v", err)
	}

	log.Infof("Using root directory: %v", s.RootDirectory)
	credentialprovider.SetPreferredDockercfgPath(s.RootDirectory)

	cAdvisorInterface, err := cadvisor.New(s.CAdvisorPort)
	if err != nil {
		return err
	}

	imageGCPolicy := kubelet.ImageGCPolicy{
		HighThresholdPercent: s.ImageGCHighThresholdPercent,
		LowThresholdPercent:  s.ImageGCLowThresholdPercent,
	}

	diskSpacePolicy := kubelet.DiskSpacePolicy{
		DockerFreeDiskMB: s.LowDiskSpaceThresholdMB,
		RootFreeDiskMB:   s.LowDiskSpaceThresholdMB,
	}

	//TODO(jdef) intentionally NOT initializing a cloud provider here since:
	//(a) the kubelet doesn't actually use it
	//(b) we don't need to create N-kubelet connections to zookeeper for no good reason
	//cloud := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	//log.Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)

	hostNetworkSources, err := kubelet.GetValidatedSources(strings.Split(s.HostNetworkSources, ","))
	if err != nil {
		return err
	}

	hostPIDSources, err := kubelet.GetValidatedSources(strings.Split(s.HostPIDSources, ","))
	if err != nil {
		return err
	}

	hostIPCSources, err := kubelet.GetValidatedSources(strings.Split(s.HostIPCSources, ","))
	if err != nil {
		return err
	}

	tlsOptions, err := s.InitializeTLS()
	if err != nil {
		return err
	}
	mounter := mount.New()
	if s.Containerized {
		log.V(2).Info("Running kubelet in containerized mode (experimental)")
		mounter = &mount.NsenterMounter{}
	}

	var writer utilio.Writer = &utilio.StdWriter{}
	var dockerExecHandler dockertools.ExecHandler
	switch s.DockerExecHandlerName {
	case "native":
		dockerExecHandler = &dockertools.NativeExecHandler{}
	case "nsenter":
		writer = &utilio.NsenterWriter{}
		dockerExecHandler = &dockertools.NsenterExecHandler{}
	default:
		log.Warningf("Unknown Docker exec handler %q; defaulting to native", s.DockerExecHandlerName)
		dockerExecHandler = &dockertools.NativeExecHandler{}
	}

	manifestURLHeader := make(http.Header)
	if s.ManifestURLHeader != "" {
		pieces := strings.Split(s.ManifestURLHeader, ":")
		if len(pieces) != 2 {
			return fmt.Errorf("manifest-url-header must have a single ':' key-value separator, got %q", s.ManifestURLHeader)
		}
		manifestURLHeader.Set(pieces[0], pieces[1])
	}

	kcfg := app.KubeletConfig{
		Address:           s.Address,
		AllowPrivileged:   s.AllowPrivileged,
//.........这里部分代码省略.........

func run(s *options.KubeletServer, kubeDeps *kubelet.KubeletDeps) (err error) {
	// TODO: this should be replaced by a --standalone flag
	standaloneMode := (len(s.APIServerList) == 0 && !s.RequireKubeConfig)

	if s.ExitOnLockContention && s.LockFilePath == "" {
		return errors.New("cannot exit on lock file contention: no lock file specified")
	}

	done := make(chan struct{})
	if s.LockFilePath != "" {
		glog.Infof("acquiring file lock on %q", s.LockFilePath)
		if err := flock.Acquire(s.LockFilePath); err != nil {
			return fmt.Errorf("unable to acquire file lock on %q: %v", s.LockFilePath, err)
		}
		if s.ExitOnLockContention {
			glog.Infof("watching for inotify events for: %v", s.LockFilePath)
			if err := watchForLockfileContention(s.LockFilePath, done); err != nil {
				return err
			}
		}
	}

	// Set feature gates based on the value in KubeletConfiguration
	err = utilconfig.DefaultFeatureGate.Set(s.KubeletConfiguration.FeatureGates)
	if err != nil {
		return err
	}

	// Register current configuration with /configz endpoint
	cfgz, cfgzErr := initConfigz(&s.KubeletConfiguration)
	if utilconfig.DefaultFeatureGate.DynamicKubeletConfig() {
		// Look for config on the API server. If it exists, replace s.KubeletConfiguration
		// with it and continue. initKubeletConfigSync also starts the background thread that checks for new config.

		// Don't do dynamic Kubelet configuration in runonce mode
		if s.RunOnce == false {
			remoteKC, err := initKubeletConfigSync(s)
			if err == nil {
				// Update s (KubeletServer) with new config from API server
				s.KubeletConfiguration = *remoteKC
				// Ensure that /configz is up to date with the new config
				if cfgzErr != nil {
					glog.Errorf("was unable to register configz before due to %s, will not be able to set now", cfgzErr)
				} else {
					setConfigz(cfgz, &s.KubeletConfiguration)
				}
				// Update feature gates from the new config
				err = utilconfig.DefaultFeatureGate.Set(s.KubeletConfiguration.FeatureGates)
				if err != nil {
					return err
				}
			}
		}
	}

	if kubeDeps == nil {
		var kubeClient, eventClient *clientset.Clientset
		var cloud cloudprovider.Interface

		if s.CloudProvider != componentconfigv1alpha1.AutoDetectCloudProvider {
			cloud, err = cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
			if err != nil {
				return err
			}
			if cloud == nil {
				glog.V(2).Infof("No cloud provider specified: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
			} else {
				glog.V(2).Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
			}
		}

		if s.BootstrapKubeconfig != "" {
			nodeName, err := getNodeName(cloud, nodeutil.GetHostname(s.HostnameOverride))
			if err != nil {
				return err
			}
			if err := bootstrapClientCert(s.KubeConfig.Value(), s.BootstrapKubeconfig, s.CertDirectory, nodeName); err != nil {
				return err
			}
		}

		clientConfig, err := CreateAPIServerClientConfig(s)
		if err == nil {
			kubeClient, err = clientset.NewForConfig(clientConfig)
			if err != nil {
				glog.Warningf("New kubeClient from clientConfig error: %v", err)
			}
			// make a separate client for events
			eventClientConfig := *clientConfig
			eventClientConfig.QPS = float32(s.EventRecordQPS)
			eventClientConfig.Burst = int(s.EventBurst)
			eventClient, err = clientset.NewForConfig(&eventClientConfig)
		} else {
			if s.RequireKubeConfig {
				return fmt.Errorf("invalid kubeconfig: %v", err)
			}
			if standaloneMode {
				glog.Warningf("No API client: %v", err)
			}
		}
//.........这里部分代码省略.........

func run(s *options.KubeletServer, kcfg *KubeletConfig) (err error) {
	if s.ExitOnLockContention && s.LockFilePath == "" {
		return errors.New("cannot exit on lock file contention: no lock file specified")
	}

	done := make(chan struct{})
	if s.LockFilePath != "" {
		glog.Infof("acquiring lock on %q", s.LockFilePath)
		if err := flock.Acquire(s.LockFilePath); err != nil {
			return fmt.Errorf("unable to acquire file lock on %q: %v", s.LockFilePath, err)
		}
		if s.ExitOnLockContention {
			glog.Infof("watching for inotify events for: %v", s.LockFilePath)
			if err := watchForLockfileContention(s.LockFilePath, done); err != nil {
				return err
			}
		}
	}
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.KubeletConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	if kcfg == nil {
		cfg, err := UnsecuredKubeletConfig(s)
		if err != nil {
			return err
		}
		kcfg = cfg

		clientConfig, err := CreateAPIServerClientConfig(s)
		if err == nil {
			kcfg.KubeClient, err = clientset.NewForConfig(clientConfig)

			// make a separate client for events
			eventClientConfig := *clientConfig
			eventClientConfig.QPS = float32(s.EventRecordQPS)
			eventClientConfig.Burst = int(s.EventBurst)
			kcfg.EventClient, err = clientset.NewForConfig(&eventClientConfig)
		}
		if err != nil && len(s.APIServerList) > 0 {
			glog.Warningf("No API client: %v", err)
		}

		if s.CloudProvider == kubeExternal.AutoDetectCloudProvider {
			kcfg.AutoDetectCloudProvider = true
		} else {
			cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
			if err != nil {
				return err
			}
			if cloud == nil {
				glog.V(2).Infof("No cloud provider specified: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
			} else {
				glog.V(2).Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
				kcfg.Cloud = cloud
			}
		}
	}

	if kcfg.CAdvisorInterface == nil {
		kcfg.CAdvisorInterface, err = cadvisor.New(uint(s.CAdvisorPort), kcfg.ContainerRuntime)
		if err != nil {
			return err
		}
	}

	if kcfg.ContainerManager == nil {
		if kcfg.SystemCgroups != "" && kcfg.CgroupRoot == "" {
			return fmt.Errorf("invalid configuration: system container was specified and cgroup root was not specified")
		}
		kcfg.ContainerManager, err = cm.NewContainerManager(kcfg.Mounter, kcfg.CAdvisorInterface, cm.NodeConfig{
			RuntimeCgroupsName: kcfg.RuntimeCgroups,
			SystemCgroupsName:  kcfg.SystemCgroups,
			KubeletCgroupsName: kcfg.KubeletCgroups,
			ContainerRuntime:   kcfg.ContainerRuntime,
			CgroupsPerQOS:      kcfg.CgroupsPerQOS,
			CgroupRoot:         kcfg.CgroupRoot,
		})
		if err != nil {
			return err
		}
	}

	runtime.ReallyCrash = s.ReallyCrashForTesting
	rand.Seed(time.Now().UTC().UnixNano())

	// TODO(vmarmol): Do this through container config.
	oomAdjuster := kcfg.OOMAdjuster
	if err := oomAdjuster.ApplyOOMScoreAdj(0, int(s.OOMScoreAdj)); err != nil {
		glog.Warning(err)
	}

	if err := RunKubelet(kcfg); err != nil {
		return err
	}

	if s.HealthzPort > 0 {
		healthz.DefaultHealthz()
		go wait.Until(func() {
//.........这里部分代码省略.........

// Run runs the specified KubeletServer for the given KubeletConfig.  This should never exit.
// The kcfg argument may be nil - if so, it is initialized from the settings on KubeletServer.
// Otherwise, the caller is assumed to have set up the KubeletConfig object and all defaults
// will be ignored.
func Run(s *options.KubeletServer, kcfg *KubeletConfig) error {
	var err error
	if kcfg == nil {
		cfg, err := UnsecuredKubeletConfig(s)
		if err != nil {
			return err
		}
		kcfg = cfg

		clientConfig, err := CreateAPIServerClientConfig(s)
		if err == nil {
			kcfg.KubeClient, err = client.New(clientConfig)

			// make a separate client for events
			eventClientConfig := *clientConfig
			eventClientConfig.QPS = s.EventRecordQPS
			eventClientConfig.Burst = s.EventBurst
			kcfg.EventClient, err = client.New(&eventClientConfig)
		}
		if err != nil && len(s.APIServerList) > 0 {
			glog.Warningf("No API client: %v", err)
		}

		cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
		if err != nil {
			return err
		}
		glog.V(2).Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
		kcfg.Cloud = cloud
	}

	if kcfg.CAdvisorInterface == nil {
		kcfg.CAdvisorInterface, err = cadvisor.New(s.CAdvisorPort)
		if err != nil {
			return err
		}
	}

	if kcfg.ContainerManager == nil {
		kcfg.ContainerManager, err = cm.NewContainerManager(kcfg.Mounter, kcfg.CAdvisorInterface)
		if err != nil {
			return err
		}
	}

	runtime.ReallyCrash = s.ReallyCrashForTesting
	rand.Seed(time.Now().UTC().UnixNano())

	credentialprovider.SetPreferredDockercfgPath(s.RootDirectory)

	glog.V(2).Infof("Using root directory: %v", s.RootDirectory)

	// TODO(vmarmol): Do this through container config.
	oomAdjuster := kcfg.OOMAdjuster
	if err := oomAdjuster.ApplyOOMScoreAdj(0, s.OOMScoreAdj); err != nil {
		glog.Warning(err)
	}

	if err := RunKubelet(kcfg); err != nil {
		return err
	}

	if s.HealthzPort > 0 {
		healthz.DefaultHealthz()
		go util.Until(func() {
			err := http.ListenAndServe(net.JoinHostPort(s.HealthzBindAddress, strconv.Itoa(s.HealthzPort)), nil)
			if err != nil {
				glog.Errorf("Starting health server failed: %v", err)
			}
		}, 5*time.Second, util.NeverStop)
	}

	if s.RunOnce {
		return nil
	}

	// run forever
	select {}
}

func run(s *options.KubeletServer, kcfg *KubeletConfig) (err error) {
	if s.LockFilePath != "" {
		glog.Infof("aquiring lock on %q", s.LockFilePath)
		if err := flock.Acquire(s.LockFilePath); err != nil {
			return fmt.Errorf("unable to aquire file lock on %q: %v", s.LockFilePath, err)
		}
	}
	if c, err := configz.New("componentconfig"); err == nil {
		c.Set(s.KubeletConfiguration)
	} else {
		glog.Errorf("unable to register configz: %s", err)
	}
	if kcfg == nil {
		cfg, err := UnsecuredKubeletConfig(s)
		if err != nil {
			return err
		}
		kcfg = cfg

		clientConfig, err := CreateAPIServerClientConfig(s)
		if err == nil {
			kcfg.KubeClient, err = clientset.NewForConfig(clientConfig)

			// make a separate client for events
			eventClientConfig := *clientConfig
			eventClientConfig.QPS = s.EventRecordQPS
			eventClientConfig.Burst = s.EventBurst
			kcfg.EventClient, err = clientset.NewForConfig(&eventClientConfig)
		}
		if err != nil && len(s.APIServerList) > 0 {
			glog.Warningf("No API client: %v", err)
		}

		cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
		if err != nil {
			return err
		}
		glog.V(2).Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)
		kcfg.Cloud = cloud
	}

	if kcfg.CAdvisorInterface == nil {
		kcfg.CAdvisorInterface, err = cadvisor.New(s.CAdvisorPort)
		if err != nil {
			return err
		}
	}

	if kcfg.ContainerManager == nil {
		if kcfg.SystemCgroups != "" && kcfg.CgroupRoot == "" {
			return fmt.Errorf("invalid configuration: system container was specified and cgroup root was not specified")
		}

		kcfg.ContainerManager, err = cm.NewContainerManager(kcfg.Mounter, kcfg.CAdvisorInterface, cm.NodeConfig{
			RuntimeCgroupsName: kcfg.RuntimeCgroups,
			SystemCgroupsName:  kcfg.SystemCgroups,
			KubeletCgroupsName: kcfg.KubeletCgroups,
			ContainerRuntime:   kcfg.ContainerRuntime,
		})
		if err != nil {
			return err
		}
	}

	runtime.ReallyCrash = s.ReallyCrashForTesting
	rand.Seed(time.Now().UTC().UnixNano())

	credentialprovider.SetPreferredDockercfgPath(s.RootDirectory)

	glog.V(2).Infof("Using root directory: %v", s.RootDirectory)

	// TODO(vmarmol): Do this through container config.
	oomAdjuster := kcfg.OOMAdjuster
	if err := oomAdjuster.ApplyOOMScoreAdj(0, s.OOMScoreAdj); err != nil {
		glog.Warning(err)
	}

	if err := RunKubelet(kcfg); err != nil {
		return err
	}

	if s.HealthzPort > 0 {
		healthz.DefaultHealthz()
		go wait.Until(func() {
			err := http.ListenAndServe(net.JoinHostPort(s.HealthzBindAddress, strconv.Itoa(s.HealthzPort)), nil)
			if err != nil {
				glog.Errorf("Starting health server failed: %v", err)
			}
		}, 5*time.Second, wait.NeverStop)
	}

	if s.RunOnce {
		return nil
	}

	// run forever
	select {}
}

// Run runs the specified KubeletExecutorServer.
func (s *KubeletExecutorServer) Run(hks hyperkube.Interface, _ []string) error {
	rand.Seed(time.Now().UTC().UnixNano())

	oomAdjuster := oom.NewOomAdjuster()
	if err := oomAdjuster.ApplyOomScoreAdj(0, s.OOMScoreAdj); err != nil {
		log.Info(err)
	}

	// derive the executor cgroup and use it as docker container cgroup root
	mesosCgroup := findMesosCgroup(s.cgroupPrefix)
	s.cgroupRoot = mesosCgroup
	log.V(2).Infof("passing cgroup %q to the kubelet as cgroup root", s.CgroupRoot)

	// empty string for the docker and system containers (= cgroup paths). This
	// stops the kubelet taking any control over other system processes.
	s.SystemContainer = ""
	s.DockerDaemonContainer = ""

	// We set kubelet container to its own cgroup below the executor cgroup.
	// In contrast to the docker and system container, this has no other
	// undesired side-effects.
	s.ResourceContainer = mesosCgroup + "/kubelet"

	// create apiserver client
	var apiclient *client.Client
	clientConfig, err := s.CreateAPIServerClientConfig()
	if err == nil {
		apiclient, err = client.New(clientConfig)
	}
	if err != nil {
		// required for k8sm since we need to send api.Binding information
		// back to the apiserver
		log.Fatalf("No API client: %v", err)
	}

	log.Infof("Using root directory: %v", s.RootDirectory)
	credentialprovider.SetPreferredDockercfgPath(s.RootDirectory)

	shutdownCloser, err := s.syncExternalShutdownWatcher()
	if err != nil {
		return err
	}

	cadvisorInterface, err := cadvisor.New(s.CadvisorPort)
	if err != nil {
		return err
	}

	imageGCPolicy := kubelet.ImageGCPolicy{
		HighThresholdPercent: s.ImageGCHighThresholdPercent,
		LowThresholdPercent:  s.ImageGCLowThresholdPercent,
	}

	diskSpacePolicy := kubelet.DiskSpacePolicy{
		DockerFreeDiskMB: s.LowDiskSpaceThresholdMB,
		RootFreeDiskMB:   s.LowDiskSpaceThresholdMB,
	}

	//TODO(jdef) intentionally NOT initializing a cloud provider here since:
	//(a) the kubelet doesn't actually use it
	//(b) we don't need to create N-kubelet connections to zookeeper for no good reason
	//cloud := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	//log.Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)

	hostNetworkSources, err := kubelet.GetValidatedSources(strings.Split(s.HostNetworkSources, ","))
	if err != nil {
		return err
	}

	tlsOptions, err := s.InitializeTLS()
	if err != nil {
		return err
	}
	mounter := mount.New()
	if s.Containerized {
		log.V(2).Info("Running kubelet in containerized mode (experimental)")
		mounter = &mount.NsenterMounter{}
	}

	var dockerExecHandler dockertools.ExecHandler
	switch s.DockerExecHandlerName {
	case "native":
		dockerExecHandler = &dockertools.NativeExecHandler{}
	case "nsenter":
		dockerExecHandler = &dockertools.NsenterExecHandler{}
	default:
		log.Warningf("Unknown Docker exec handler %q; defaulting to native", s.DockerExecHandlerName)
		dockerExecHandler = &dockertools.NativeExecHandler{}
	}

	kcfg := app.KubeletConfig{
		Address:            s.Address,
		AllowPrivileged:    s.AllowPrivileged,
		HostNetworkSources: hostNetworkSources,
		HostnameOverride:   s.HostnameOverride,
		RootDirectory:      s.RootDirectory,
		// ConfigFile: ""
		// ManifestURL: ""
		FileCheckFrequency: s.FileCheckFrequency,
//.........这里部分代码省略.........

// Run runs the specified KubeletServer.  This should never exit.
func (s *KubeletServer) Run(_ []string) error {
	util.ReallyCrash = s.ReallyCrashForTesting
	rand.Seed(time.Now().UTC().UnixNano())

	// TODO(vmarmol): Do this through container config.
	if err := util.ApplyOomScoreAdj(0, s.OOMScoreAdj); err != nil {
		glog.Warning(err)
	}

	var apiclient *client.Client
	clientConfig, err := s.CreateAPIServerClientConfig()
	if err == nil {
		apiclient, err = client.New(clientConfig)
	}
	if err != nil && len(s.APIServerList) > 0 {
		glog.Warningf("No API client: %v", err)
	}

	glog.V(2).Infof("Using root directory: %v", s.RootDirectory)

	credentialprovider.SetPreferredDockercfgPath(s.RootDirectory)

	cadvisorInterface, err := cadvisor.New(s.CadvisorPort)
	if err != nil {
		return err
	}

	imageGCPolicy := kubelet.ImageGCPolicy{
		HighThresholdPercent: s.ImageGCHighThresholdPercent,
		LowThresholdPercent:  s.ImageGCLowThresholdPercent,
	}

	diskSpacePolicy := kubelet.DiskSpacePolicy{
		DockerFreeDiskMB: s.LowDiskSpaceThresholdMB,
		RootFreeDiskMB:   s.LowDiskSpaceThresholdMB,
	}
	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	if err != nil {
		return err
	}
	glog.V(2).Infof("Successfully initialized cloud provider: %q from the config file: %q\n", s.CloudProvider, s.CloudConfigFile)

	manifestURLHeader := make(http.Header)
	if s.ManifestURLHeader != "" {
		pieces := strings.Split(s.ManifestURLHeader, ":")
		if len(pieces) != 2 {
			return fmt.Errorf("manifest-url-header must have a single ':' key-value separator, got %q", s.ManifestURLHeader)
		}
		manifestURLHeader.Set(pieces[0], pieces[1])
	}

	hostNetworkSources, err := kubelet.GetValidatedSources(strings.Split(s.HostNetworkSources, ","))
	if err != nil {
		return err
	}

	tlsOptions, err := s.InitializeTLS()
	if err != nil {
		return err
	}

	mounter := mount.New()
	if s.Containerized {
		glog.V(2).Info("Running kubelet in containerized mode (experimental)")
		mounter = mount.NewNsenterMounter()
	}

	var dockerExecHandler dockertools.ExecHandler
	switch s.DockerExecHandlerName {
	case "native":
		dockerExecHandler = &dockertools.NativeExecHandler{}
	case "nsenter":
		dockerExecHandler = &dockertools.NsenterExecHandler{}
	default:
		glog.Warningf("Unknown Docker exec handler %q; defaulting to native", s.DockerExecHandlerName)
		dockerExecHandler = &dockertools.NativeExecHandler{}
	}

	kcfg := KubeletConfig{
		Address:                        s.Address,
		AllowPrivileged:                s.AllowPrivileged,
		HostNetworkSources:             hostNetworkSources,
		HostnameOverride:               s.HostnameOverride,
		RootDirectory:                  s.RootDirectory,
		ConfigFile:                     s.Config,
		ManifestURL:                    s.ManifestURL,
		ManifestURLHeader:              manifestURLHeader,
		FileCheckFrequency:             s.FileCheckFrequency,
		HTTPCheckFrequency:             s.HTTPCheckFrequency,
		PodInfraContainerImage:         s.PodInfraContainerImage,
		SyncFrequency:                  s.SyncFrequency,
		RegistryPullQPS:                s.RegistryPullQPS,
		RegistryBurst:                  s.RegistryBurst,
		MinimumGCAge:                   s.MinimumGCAge,
		MaxPerPodContainerCount:        s.MaxPerPodContainerCount,
		MaxContainerCount:              s.MaxContainerCount,
		RegisterNode:                   s.RegisterNode,
		StandaloneMode:                 (len(s.APIServerList) == 0),
		ClusterDomain:                  s.ClusterDomain,
//.........这里部分代码省略.........