Exemplo n.º 1
0
Arquivo: http.go Projeto: orivej/grace
func serve(listeners []net.Listener, servers []*http.Server) error {
	hdServers := make([]httpdown.Server, len(listeners))
	for i, l := range listeners {
		if servers[i].TLSConfig != nil {
			l = tls.NewListener(l, servers[i].TLSConfig)
		}
		hdServers[i] = httpdown.HTTP{}.Serve(servers[i], l)
	}
	_ = daemon.SdNotify(sdReady) // ignore error

	ch := make(chan os.Signal)
	signal.Notify(ch, syscall.SIGTERM)
	<-ch
	signal.Stop(ch)

	errs := make([]error, len(listeners))
	wg := sync.WaitGroup{}
	for i := range hdServers {
		wg.Add(1)
		go func(i int) {
			defer wg.Done()
			errs[i] = hdServers[i].Stop()
		}(i)
	}
	wg.Wait()

	for _, err := range errs {
		if err != nil {
			return err
		}
	}
	return nil
}
Exemplo n.º 2
0
// StartAllInOne:
// 1.  Creates the signer certificate if needed
// 2.  Calls RunMaster
// 3.  Calls RunNode
// 4.  If only writing configs, it exits
// 5.  Waits forever
func (o AllInOneOptions) StartAllInOne() error {
	if o.PrintIP {
		host, _, err := net.SplitHostPort(o.NodeArgs.DefaultKubernetesURL.Host)
		if err != nil {
			return err
		}
		fmt.Fprintf(o.Output, "%s\n", host)
		return nil
	}
	masterOptions := *o.MasterOptions
	if err := masterOptions.RunMaster(); err != nil {
		return err
	}

	nodeOptions := NodeOptions{o.NodeArgs, o.NodeConfigFile, o.MasterOptions.Output}
	if err := nodeOptions.RunNode(); err != nil {
		return err
	}

	if o.IsWriteConfigOnly() {
		return nil
	}

	daemon.SdNotify("READY=1")
	select {}
}
Exemplo n.º 3
0
// StartEtcdServer calls RunEtcdServer and then waits forever
func (o *EtcdOptions) StartEtcdServer() error {
	if err := o.RunEtcdServer(); err != nil {
		return err
	}

	go daemon.SdNotify("READY=1")
	select {}
}
Exemplo n.º 4
0
func (s *Server) AcceptConnections() {
	go systemdDaemon.SdNotify("READY=1")
	// close the lock so the listeners start accepting connections
	select {
	case <-s.start:
	default:
		close(s.start)
	}
}
Exemplo n.º 5
0
func main() {
	flag.Parse()

	exists, err := dirExists(*outputDir)
	if err != nil {
		log.Fatal(err)
	}

	if !exists {
		if err := os.Mkdir(*outputDir, 0755); err != nil {
			log.Fatal(err)
		}
	}

	cfg := client.Config{
		Endpoints: []string{*endpoint},
		Transport: client.DefaultTransport,
		// set timeout per request to fail fast when the target endpoint is unavailable
		HeaderTimeoutPerRequest: time.Second,
	}

	c, err := client.New(cfg)
	if err != nil {
		log.Fatal(err)
	}

	if err := c.Sync(context.Background()); err != nil {
		log.Fatal(err)
	}

	kapi := client.NewKeysAPI(c)

	resp, err := generateConfig(kapi)
	if err != nil {
		log.Fatal(err)
	}
	if systemdutil.IsRunningSystemd() {
		err := daemon.SdNotify("READY=1")
		if err != nil {
			log.Printf("failed to notify systemd for readiness: %v", err)
			if err == daemon.SdNotifyNoSocket {
				log.Printf("forgot to set Type=notify in systemd service file?")
			}
		}
	}
	if *watch {
		for {
			resp, err = generateConfigWatcher(kapi, resp)
			if err != nil {
				log.Fatal(err)
			}
		}
	}
	os.Exit(0)
}
Exemplo n.º 6
0
func (r *SystemdConfig) Clean() {
	daemon.SdNotify("STOPPING=1")

	for service, filenames := range r.written {
		log.Printf("systemd: %s: removing configs...", service)
		for _, filename := range filenames {
			os.Remove(filename)
		}
		reload(service)
	}
}
Exemplo n.º 7
0
// StartNode calls RunNode and then waits forever
func (o NodeOptions) StartNode() error {
	if err := o.RunNode(); err != nil {
		return err
	}

	if o.IsWriteConfigOnly() {
		return nil
	}

	go daemon.SdNotify("READY=1")
	select {}
}
Exemplo n.º 8
0
// AcceptConnections allows clients to connect to the API server.
// Referenced Daemon is notified about this server, and waits for the
// daemon acknowledgement before the incoming connections are accepted.
func (s *Server) AcceptConnections(d *daemon.Daemon) {
	// Tell the init daemon we are accepting requests
	s.daemon = d
	s.registerSubRouter()
	go systemdDaemon.SdNotify("READY=1")
	// close the lock so the listeners start accepting connections
	select {
	case <-s.start:
	default:
		close(s.start)
	}
}
Exemplo n.º 9
0
// StartMaster calls RunMaster and then waits forever
func (o MasterOptions) StartMaster() error {
	if err := o.RunMaster(); err != nil {
		return err
	}

	if o.IsWriteConfigOnly() {
		return nil
	}

	// TODO: this should be encapsulated by RunMaster, but StartAllInOne has no
	// way to communicate whether RunMaster should block.
	go daemon.SdNotify("READY=1")
	select {}
}
Exemplo n.º 10
0
// StartMaster calls RunMaster and then waits forever
func (o MasterOptions) StartMaster() error {
	if err := o.RunMaster(); err != nil {
		return err
	}

	if o.IsWriteConfigOnly() {
		return nil
	}

	go daemon.SdNotify("READY=1")
	select {}

	return nil
}
Exemplo n.º 11
0
// This function provides a CLI handler for 'start' command
func NewCommandStartAllInOne(fullName string, out io.Writer) (*cobra.Command, *AllInOneOptions) {
	options := &AllInOneOptions{}

	cmds := &cobra.Command{
		Use:   "start",
		Short: "Launch StraYard All-In-One",
		Long:  allinoneLongDesc,
		Run: func(c *cobra.Command, args []string) {
			fmt.Println("haha")
			daemon.SdNotify("READY=1")
			select {}
		},
	}
	cmds.SetOutput(out)
	return cmds, options
}
Exemplo n.º 12
0
func RunServer(ctx context.Context, sm subnet.Manager, listenAddr, cafile, certfile, keyfile string) {
	// {network} is always required a the API level but to
	// keep backward compat, special "_" network is allowed
	// that means "no network"

	r := mux.NewRouter()
	r.HandleFunc("/v1/{network}/config", bindHandler(handleGetNetworkConfig, ctx, sm)).Methods("GET")

	r.HandleFunc("/v1/{network}/leases", bindHandler(handleAcquireLease, ctx, sm)).Methods("POST")
	r.HandleFunc("/v1/{network}/leases/{subnet}", bindHandler(handleWatchLease, ctx, sm)).Methods("GET")
	r.HandleFunc("/v1/{network}/leases/{subnet}", bindHandler(handleRenewLease, ctx, sm)).Methods("PUT")
	r.HandleFunc("/v1/{network}/leases/{subnet}", bindHandler(handleRevokeLease, ctx, sm)).Methods("DELETE")
	r.HandleFunc("/v1/{network}/leases", bindHandler(handleWatchLeases, ctx, sm)).Methods("GET")
	r.HandleFunc("/v1/", bindHandler(handleNetworks, ctx, sm)).Methods("GET")

	r.HandleFunc("/v1/{network}/reservations", bindHandler(handleListReservations, ctx, sm)).Methods("GET")
	r.HandleFunc("/v1/{network}/reservations", bindHandler(handleAddReservation, ctx, sm)).Methods("POST")
	r.HandleFunc("/v1/{network}/reservations/{subnet}", bindHandler(handleRemoveReservation, ctx, sm)).Methods("DELETE")

	l, err := listener(listenAddr, cafile, certfile, keyfile)
	if err != nil {
		log.Errorf("Error listening on %v: %v", listenAddr, err)
		return
	}

	c := make(chan error, 1)
	go func() {
		c <- http.Serve(l, httpLogger(r))
	}()

	daemon.SdNotify("READY=1")

	select {
	case <-ctx.Done():
		l.Close()
		<-c

	case err := <-c:
		log.Errorf("Error serving on %v: %v", listenAddr, err)
	}
}
Exemplo n.º 13
0
func (r *SystemdConfig) StoreAddress(address string) error {
	data := templateArgs{address}

	for _, s := range r.services {
		pattern := filepath.Join(r.templatePath, s.dir, s.filepattern)

		log.Printf("systemd: %s: loading config from %s", s.name, pattern)

		templates, err := template.ParseGlob(pattern)
		if err != nil {
			log.Println("systemd:", err)
			continue
		}

		var written []string

		for _, t := range templates.Templates() {
			dest := filepath.Join(r.destPath, s.dir, t.Name())
			log.Println("systemd: generating", dest)
			fp, err := os.Create(dest)
			if err != nil {
				log.Println("systemd:", err)
				continue
			}
			written = append(written, dest)
			t.Execute(fp, data)
			fp.Close()
		}

		if written != nil {
			r.written[s.name] = written
			reload(s.name)
		} else {
			log.Println("systemd: %s: no configs written, skipping reload", s.name)
		}
	}

	daemon.SdNotify("READY=1")
	return nil
}
Exemplo n.º 14
0
// Run spawns the http servers (secure and insecure). It only returns if stopCh is closed
// or one of the ports cannot be listened on initially.
func (s preparedGenericAPIServer) Run(stopCh <-chan struct{}) {
	if s.SecureServingInfo != nil && s.Handler != nil {
		if err := s.serveSecurely(stopCh); err != nil {
			glog.Fatal(err)
		}
	}

	if s.InsecureServingInfo != nil && s.InsecureHandler != nil {
		if err := s.serveInsecurely(stopCh); err != nil {
			glog.Fatal(err)
		}
	}

	s.RunPostStartHooks()

	// err == systemd.SdNotifyNoSocket when not running on a systemd system
	if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
		glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
	}

	<-stopCh
}
Exemplo n.º 15
0
func (m *Manager) runNetwork(n *Network) {
	n.Run(m.extIface, func(bn backend.Network) {
		if m.isMultiNetwork() {
			log.Infof("%v: lease acquired: %v", n.Name, bn.Lease().Subnet)

			path := filepath.Join(opts.subnetDir, n.Name) + ".env"
			if err := writeSubnetFile(path, n.Config.Network, m.ipMasq, bn); err != nil {
				log.Warningf("%v failed to write subnet file: %s", n.Name, err)
				return
			}
		} else {
			log.Infof("Lease acquired: %v", bn.Lease().Subnet)

			if err := writeSubnetFile(opts.subnetFile, n.Config.Network, m.ipMasq, bn); err != nil {
				log.Warningf("%v failed to write subnet file: %s", n.Name, err)
				return
			}
			daemon.SdNotify("READY=1")
		}
	})

	m.delNetwork(n)
}
Exemplo n.º 16
0
// StartAllInOne:
// 1.  Creates the signer certificate if needed
// 2.  Calls RunMaster
// 3.  Calls RunNode
// 4.  If only writing configs, it exits
// 5.  Waits forever
func (o AllInOneOptions) StartAllInOne() error {
	if !o.IsWriteConfigOnly() {
		glog.Infof("Starting an OpenShift all-in-one")
	}

	masterOptions := MasterOptions{o.MasterArgs, o.CreateCerts, o.MasterConfigFile, o.Output}
	if err := masterOptions.RunMaster(); err != nil {
		return err
	}

	nodeOptions := NodeOptions{o.NodeArgs, o.NodeConfigFile, o.Output}
	if err := nodeOptions.RunNode(); err != nil {
		return err
	}

	if o.IsWriteConfigOnly() {
		return nil
	}

	daemon.SdNotify("READY=1")
	select {}

	return nil
}
Exemplo n.º 17
0
// Watchdog setup the watchdog and start then. This functoin will
// comunicate with systemd sending the pings to it, if this fails
// to send the ping systemd will reatart this daemon.
func Watchdog() (stop chan struct{}, err error) {
	// Check if systemd exist.
	if !util.IsRunningSystemd() {
		return nil, e.New(ErrNotRunning)
	}
	// Get the periode and check if watchdog is on for this daemon
	wPeriodeµsec := os.Getenv("WATCHDOG_USEC")
	if wPeriodeµsec == "" {
		return nil, e.New(ErrNoWatchdog)
	}
	wPerInt64, err := strconv.ParseInt(wPeriodeµsec, 10, 32)
	if err != nil {
		return nil, e.Push(err, ErrInvPeriode)
	}
	wPerHalf := time.Duration(int(wPerInt64)/2) * time.Microsecond
	if wPerHalf <= 0 {
		return nil, e.New(ErrInvInterval)
	}
	log.Tag("systemd", "watchdog").Printf("Starting the watchdog with interval of %v.", wPerHalf)
	stop = make(chan struct{})
	// Start the periodic pings
	go func() {
		for {
			select {
			case <-stop:
				log.Tag("systemd", "watchdog").Println("By request watchdog is stoping.")
				return
			case <-time.After(wPerHalf):
				// Send the ping.
				log.ProtoLevel().Tag("systemd", "watchdog").Println("Ping.")
				daemon.SdNotify(sdState)
			}
		}
	}()
	return
}
Exemplo n.º 18
0
Arquivo: etcd.go Projeto: oywc410/MYPG
func Main() {
	//载入命令中设置的配置项
	cfg := NewConfig()
	err := cfg.Parse(os.Args[1:])
	if err != nil {
		plog.Errorf("error verifying flags, %v. See 'etcd --help'.", err)
		switch err {
		case errUnsetAdvertiseClientURLsFlag:
			plog.Errorf("When listening on specific address(es), this etcd process must advertise accessible url(s) to each connected client.")
		}
		os.Exit(1)
	}
	//配置信息记录到日志中
	setupLogging(cfg)

	var stopped <-chan struct{}

	plog.Infof("etcd Version: %s\n", version.Version)
	plog.Infof("Git SHA: %s\n", version.GitSHA)
	plog.Infof("Go Version: %s\n", runtime.Version())
	plog.Infof("Go OS/Arch: %s/%s\n", runtime.GOOS, runtime.GOARCH)

	GoMaxProcs := runtime.GOMAXPROCS(0)
	plog.Infof("setting maximum number of CPUs to %d, total number of available CPUs is %d", GoMaxProcs, runtime.NumCPU())

	// TODO: check whether fields are set instead of whether fields have default value
	if cfg.name != defaultName && cfg.initialCluster == initialClusterFromName(defaultName) {
		cfg.initialCluster = initialClusterFromName(cfg.name)
	}

	if cfg.dir == "" {
		cfg.dir = fmt.Sprintf("%v.etcd", cfg.name)
		plog.Warningf("no data-dir provided, using default data-dir ./%s", cfg.dir)
	}
	//识别数据文件夹类型(会员或代理或为空)
	which := identifyDataDirOrDie(cfg.dir)
	if which != dirEmpty {
		plog.Noticef("the server is already initialized as %v before, starting as etcd %v...", which, which)
		switch which {
		case dirMember:
			stopped, err = startEtcd(cfg)
		case dirProxy:
			err = startProxy(cfg)
		default:
			plog.Panicf("unhandled dir type %v", which)
		}
	} else { //类型为空时(新建数据--???--)
		shouldProxy := cfg.isProxy() //是否为代理模式
		if !shouldProxy {
			stopped, err = startEtcd(cfg)
			if derr, ok := err.(*etcdserver.DiscoveryError); ok && derr.Err == discovery.ErrFullCluster {
				if cfg.shouldFallbackToProxy() {
					plog.Noticef("discovery cluster full, falling back to %s", fallbackFlagProxy)
					shouldProxy = true
				}
			}
		}
		if shouldProxy { //代理模式
			//不加入到etcd一致性集群中,纯粹进行代理转发。
			err = startProxy(cfg)
		}
	}

	if err != nil {
		if derr, ok := err.(*etcdserver.DiscoveryError); ok {
			switch derr.Err {
			case discovery.ErrDuplicateID:
				plog.Errorf("member %q has previously registered with discovery service token (%s).", cfg.name, cfg.durl)
				plog.Errorf("But etcd could not find valid cluster configuration in the given data dir (%s).", cfg.dir)
				plog.Infof("Please check the given data dir path if the previous bootstrap succeeded")
				plog.Infof("or use a new discovery token if the previous bootstrap failed.")
			case discovery.ErrDuplicateName:
				plog.Errorf("member with duplicated name has registered with discovery service token(%s).", cfg.durl)
				plog.Errorf("please check (cURL) the discovery token for more information.")
				plog.Errorf("please do not reuse the discovery token and generate a new one to bootstrap the cluster.")
			default:
				plog.Errorf("%v", err)
				plog.Infof("discovery token %s was used, but failed to bootstrap the cluster.", cfg.durl)
				plog.Infof("please generate a new discovery token and try to bootstrap again.")
			}
			os.Exit(1)
		}

		if strings.Contains(err.Error(), "include") && strings.Contains(err.Error(), "--initial-cluster") {
			plog.Infof("%v", err)
			if cfg.initialCluster == initialClusterFromName(cfg.name) {
				plog.Infof("forgot to set --initial-cluster flag?")
			}
			if types.URLs(cfg.apurls).String() == defaultInitialAdvertisePeerURLs {
				plog.Infof("forgot to set --initial-advertise-peer-urls flag?")
			}
			if cfg.initialCluster == initialClusterFromName(cfg.name) && len(cfg.durl) == 0 {
				plog.Infof("if you want to use discovery service, please set --discovery flag.")
			}
			os.Exit(1)
		}
		plog.Fatalf("%v", err)
	}

	osutil.HandleInterrupts()

	if systemdutil.IsRunningSystemd() {
		// At this point, the initialization of etcd is done.
		// The listeners are listening on the TCP ports and ready
		// for accepting connections.
		// The http server is probably ready for serving incoming
		// connections. If it is not, the connection might be pending
		// for less than one second.
		err := daemon.SdNotify("READY=1")
		if err != nil {
			plog.Errorf("failed to notify systemd for readiness: %v", err)
			if err == daemon.SdNotifyNoSocket {
				plog.Errorf("forgot to set Type=notify in systemd service file?")
			}
		}
	}

	<-stopped
	osutil.Exit(0)
}
Exemplo n.º 19
0
func (s *GenericAPIServer) Run(options *ServerRunOptions) {
	if s.enableSwaggerSupport {
		s.InstallSwaggerAPI()
	}
	// We serve on 2 ports. See docs/accessing_the_api.md
	secureLocation := ""
	if options.SecurePort != 0 {
		secureLocation = net.JoinHostPort(options.BindAddress.String(), strconv.Itoa(options.SecurePort))
	}
	insecureLocation := net.JoinHostPort(options.InsecureBindAddress.String(), strconv.Itoa(options.InsecurePort))

	var sem chan bool
	if options.MaxRequestsInFlight > 0 {
		sem = make(chan bool, options.MaxRequestsInFlight)
	}

	longRunningRE := regexp.MustCompile(options.LongRunningRequestRE)
	longRunningRequestCheck := apiserver.BasicLongRunningRequestCheck(longRunningRE, map[string]string{"watch": "true"})
	longRunningTimeout := func(req *http.Request) (<-chan time.Time, string) {
		// TODO unify this with apiserver.MaxInFlightLimit
		if longRunningRequestCheck(req) {
			return nil, ""
		}
		return time.After(globalTimeout), ""
	}

	if secureLocation != "" {
		handler := apiserver.TimeoutHandler(s.Handler, longRunningTimeout)
		secureServer := &http.Server{
			Addr:           secureLocation,
			Handler:        apiserver.MaxInFlightLimit(sem, longRunningRequestCheck, apiserver.RecoverPanics(handler)),
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Change default from SSLv3 to TLSv1.0 (because of POODLE vulnerability)
				MinVersion: tls.VersionTLS10,
			},
		}

		if len(options.ClientCAFile) > 0 {
			clientCAs, err := crypto.CertPoolFromFile(options.ClientCAFile)
			if err != nil {
				glog.Fatalf("Unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
		}

		glog.Infof("Serving securely on %s", secureLocation)
		if options.TLSCertFile == "" && options.TLSPrivateKeyFile == "" {
			options.TLSCertFile = path.Join(options.CertDirectory, "apiserver.crt")
			options.TLSPrivateKeyFile = path.Join(options.CertDirectory, "apiserver.key")
			// TODO (cjcullen): Is ClusterIP the right address to sign a cert with?
			alternateIPs := []net.IP{s.ServiceReadWriteIP}
			alternateDNS := []string{"kubernetes.default.svc", "kubernetes.default", "kubernetes"}
			// It would be nice to set a fqdn subject alt name, but only the kubelets know, the apiserver is clueless
			// alternateDNS = append(alternateDNS, "kubernetes.default.svc.CLUSTER.DNS.NAME")
			if shouldGenSelfSignedCerts(options.TLSCertFile, options.TLSPrivateKeyFile) {
				if err := crypto.GenerateSelfSignedCert(s.ClusterIP.String(), options.TLSCertFile, options.TLSPrivateKeyFile, alternateIPs, alternateDNS); err != nil {
					glog.Errorf("Unable to generate self signed cert: %v", err)
				} else {
					glog.Infof("Using self-signed cert (%options, %options)", options.TLSCertFile, options.TLSPrivateKeyFile)
				}
			}
		}

		go func() {
			defer utilruntime.HandleCrash()
			for {
				// err == systemd.SdNotifyNoSocket when not running on a systemd system
				if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
					glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
				}
				if err := secureServer.ListenAndServeTLS(options.TLSCertFile, options.TLSPrivateKeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	} else {
		// err == systemd.SdNotifyNoSocket when not running on a systemd system
		if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
			glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
		}
	}

	handler := apiserver.TimeoutHandler(s.InsecureHandler, longRunningTimeout)
	http := &http.Server{
		Addr:           insecureLocation,
		Handler:        apiserver.RecoverPanics(handler),
		MaxHeaderBytes: 1 << 20,
	}
	glog.Infof("Serving insecurely on %s", insecureLocation)
	glog.Fatal(http.ListenAndServe())
}
Exemplo n.º 20
0
// Run runs the specified APIServer.  This should never exit.
func (s *APIServer) Run(_ []string) error {
	s.verifyClusterIPFlags()

	// If advertise-address is not specified, use bind-address. If bind-address
	// is not usable (unset, 0.0.0.0, or loopback), setDefaults() in
	// pkg/master/master.go will do the right thing and use the host's default
	// interface.
	if s.AdvertiseAddress == nil || s.AdvertiseAddress.IsUnspecified() {
		s.AdvertiseAddress = s.BindAddress
	}

	if (s.EtcdConfigFile != "" && len(s.EtcdServerList) != 0) || (s.EtcdConfigFile == "" && len(s.EtcdServerList) == 0) {
		glog.Fatalf("Specify either --etcd-servers or --etcd-config")
	}

	if s.KubernetesServiceNodePort > 0 && !s.ServiceNodePortRange.Contains(s.KubernetesServiceNodePort) {
		glog.Fatalf("Kubernetes service port range %v doesn't contain %v", s.ServiceNodePortRange, (s.KubernetesServiceNodePort))
	}

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		PrivilegedSources: capabilities.PrivilegedSources{
			HostNetworkSources: []string{},
			HostPIDSources:     []string{},
			HostIPCSources:     []string{},
		},
		PerConnectionBandwidthLimitBytesPerSec: s.MaxConnectionBytesPerSec,
	})

	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	if err != nil {
		glog.Fatalf("Cloud provider could not be initialized: %v", err)
	}

	// Setup tunneler if needed
	var tunneler master.Tunneler
	var proxyDialerFn apiserver.ProxyDialerFunc
	if len(s.SSHUser) > 0 {
		// Get ssh key distribution func, if supported
		var installSSH master.InstallSSHKey
		if cloud != nil {
			if instances, supported := cloud.Instances(); supported {
				installSSH = instances.AddSSHKeyToAllInstances
			}
		}

		// Set up the tunneler
		tunneler = master.NewSSHTunneler(s.SSHUser, s.SSHKeyfile, installSSH)

		// Use the tunneler's dialer to connect to the kubelet
		s.KubeletConfig.Dial = tunneler.Dial
		// Use the tunneler's dialer when proxying to pods, services, and nodes
		proxyDialerFn = tunneler.Dial
	}

	// Proxying to pods and services is IP-based... don't expect to be able to verify the hostname
	proxyTLSClientConfig := &tls.Config{InsecureSkipVerify: true}

	kubeletClient, err := client.NewKubeletClient(&s.KubeletConfig)
	if err != nil {
		glog.Fatalf("Failure to start kubelet client: %v", err)
	}

	apiGroupVersionOverrides, err := s.parseRuntimeConfig()
	if err != nil {
		glog.Fatalf("error in parsing runtime-config: %s", err)
	}

	clientConfig := &client.Config{
		Host:    net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort)),
		Version: s.DeprecatedStorageVersion,
	}
	client, err := client.New(clientConfig)
	if err != nil {
		glog.Fatalf("Invalid server address: %v", err)
	}

	legacyV1Group, err := latest.Group("")
	if err != nil {
		return err
	}

	storageDestinations := master.NewStorageDestinations()

	storageVersions := generateStorageVersionMap(s.DeprecatedStorageVersion, s.StorageVersions)
	if _, found := storageVersions[legacyV1Group.Group]; !found {
		glog.Fatalf("Couldn't find the storage version for group: %q in storageVersions: %v", legacyV1Group.Group, storageVersions)
	}
	etcdStorage, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, legacyV1Group.InterfacesFor, storageVersions[legacyV1Group.Group], s.EtcdPathPrefix)
	if err != nil {
		glog.Fatalf("Invalid storage version or misconfigured etcd: %v", err)
	}
	storageDestinations.AddAPIGroup("", etcdStorage)

	if !apiGroupVersionOverrides["extensions/v1beta1"].Disable {
		expGroup, err := latest.Group("extensions")
		if err != nil {
			glog.Fatalf("Extensions API is enabled in runtime config, but not enabled in the environment variable KUBE_API_VERSIONS. Error: %v", err)
		}
		if _, found := storageVersions[expGroup.Group]; !found {
			glog.Fatalf("Couldn't find the storage version for group: %q in storageVersions: %v", expGroup.Group, storageVersions)
		}
		expEtcdStorage, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, expGroup.InterfacesFor, storageVersions[expGroup.Group], s.EtcdPathPrefix)
		if err != nil {
			glog.Fatalf("Invalid extensions storage version or misconfigured etcd: %v", err)
		}
		storageDestinations.AddAPIGroup("extensions", expEtcdStorage)
	}

	updateEtcdOverrides(s.EtcdServersOverrides, storageVersions, s.EtcdPathPrefix, &storageDestinations, newEtcd)

	n := s.ServiceClusterIPRange

	// Default to the private server key for service account token signing
	if s.ServiceAccountKeyFile == "" && s.TLSPrivateKeyFile != "" {
		if apiserver.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFile = s.TLSPrivateKeyFile
		} else {
			glog.Warning("No RSA key provided, service account token authentication disabled")
		}
	}
	authenticator, err := apiserver.NewAuthenticator(apiserver.AuthenticatorConfig{
		BasicAuthFile:         s.BasicAuthFile,
		ClientCAFile:          s.ClientCAFile,
		TokenAuthFile:         s.TokenAuthFile,
		OIDCIssuerURL:         s.OIDCIssuerURL,
		OIDCClientID:          s.OIDCClientID,
		OIDCCAFile:            s.OIDCCAFile,
		OIDCUsernameClaim:     s.OIDCUsernameClaim,
		ServiceAccountKeyFile: s.ServiceAccountKeyFile,
		ServiceAccountLookup:  s.ServiceAccountLookup,
		Storage:               etcdStorage,
		KeystoneURL:           s.KeystoneURL,
	})

	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	authorizationModeNames := strings.Split(s.AuthorizationMode, ",")
	authorizer, err := apiserver.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, s.AuthorizationPolicyFile)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	admissionController := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile)

	if len(s.ExternalHost) == 0 {
		// TODO: extend for other providers
		if s.CloudProvider == "gce" {
			instances, supported := cloud.Instances()
			if !supported {
				glog.Fatalf("GCE cloud provider has no instances.  this shouldn't happen. exiting.")
			}
			name, err := os.Hostname()
			if err != nil {
				glog.Fatalf("Failed to get hostname: %v", err)
			}
			addrs, err := instances.NodeAddresses(name)
			if err != nil {
				glog.Warningf("Unable to obtain external host address from cloud provider: %v", err)
			} else {
				for _, addr := range addrs {
					if addr.Type == api.NodeExternalIP {
						s.ExternalHost = addr.Address
					}
				}
			}
		}
	}

	config := &master.Config{
		StorageDestinations:       storageDestinations,
		StorageVersions:           storageVersions,
		EventTTL:                  s.EventTTL,
		KubeletClient:             kubeletClient,
		ServiceClusterIPRange:     &n,
		EnableCoreControllers:     true,
		EnableLogsSupport:         s.EnableLogsSupport,
		EnableUISupport:           true,
		EnableSwaggerSupport:      true,
		EnableProfiling:           s.EnableProfiling,
		EnableWatchCache:          s.EnableWatchCache,
		EnableIndex:               true,
		APIPrefix:                 s.APIPrefix,
		APIGroupPrefix:            s.APIGroupPrefix,
		CorsAllowedOriginList:     s.CorsAllowedOriginList,
		ReadWritePort:             s.SecurePort,
		PublicAddress:             s.AdvertiseAddress,
		Authenticator:             authenticator,
		SupportsBasicAuth:         len(s.BasicAuthFile) > 0,
		Authorizer:                authorizer,
		AdmissionControl:          admissionController,
		APIGroupVersionOverrides:  apiGroupVersionOverrides,
		MasterServiceNamespace:    s.MasterServiceNamespace,
		ClusterName:               s.ClusterName,
		ExternalHost:              s.ExternalHost,
		MinRequestTimeout:         s.MinRequestTimeout,
		ProxyDialer:               proxyDialerFn,
		ProxyTLSClientConfig:      proxyTLSClientConfig,
		Tunneler:                  tunneler,
		ServiceNodePortRange:      s.ServiceNodePortRange,
		KubernetesServiceNodePort: s.KubernetesServiceNodePort,
	}
	m := master.New(config)

	// We serve on 2 ports.  See docs/accessing_the_api.md
	secureLocation := ""
	if s.SecurePort != 0 {
		secureLocation = net.JoinHostPort(s.BindAddress.String(), strconv.Itoa(s.SecurePort))
	}
	insecureLocation := net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort))

	// See the flag commentary to understand our assumptions when opening the read-only and read-write ports.

	var sem chan bool
	if s.MaxRequestsInFlight > 0 {
		sem = make(chan bool, s.MaxRequestsInFlight)
	}

	longRunningRE := regexp.MustCompile(s.LongRunningRequestRE)
	longRunningTimeout := func(req *http.Request) (<-chan time.Time, string) {
		// TODO unify this with apiserver.MaxInFlightLimit
		if longRunningRE.MatchString(req.URL.Path) || req.URL.Query().Get("watch") == "true" {
			return nil, ""
		}
		return time.After(time.Minute), ""
	}

	if secureLocation != "" {
		handler := apiserver.TimeoutHandler(m.Handler, longRunningTimeout)
		secureServer := &http.Server{
			Addr:           secureLocation,
			Handler:        apiserver.MaxInFlightLimit(sem, longRunningRE, apiserver.RecoverPanics(handler)),
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Change default from SSLv3 to TLSv1.0 (because of POODLE vulnerability)
				MinVersion: tls.VersionTLS10,
			},
		}

		if len(s.ClientCAFile) > 0 {
			clientCAs, err := util.CertPoolFromFile(s.ClientCAFile)
			if err != nil {
				glog.Fatalf("Unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
		}

		glog.Infof("Serving securely on %s", secureLocation)
		if s.TLSCertFile == "" && s.TLSPrivateKeyFile == "" {
			s.TLSCertFile = path.Join(s.CertDirectory, "apiserver.crt")
			s.TLSPrivateKeyFile = path.Join(s.CertDirectory, "apiserver.key")
			// TODO (cjcullen): Is PublicAddress the right address to sign a cert with?
			alternateIPs := []net.IP{config.ServiceReadWriteIP}
			alternateDNS := []string{"kubernetes.default.svc", "kubernetes.default", "kubernetes"}
			// It would be nice to set a fqdn subject alt name, but only the kubelets know, the apiserver is clueless
			// alternateDNS = append(alternateDNS, "kubernetes.default.svc.CLUSTER.DNS.NAME")
			if err := util.GenerateSelfSignedCert(config.PublicAddress.String(), s.TLSCertFile, s.TLSPrivateKeyFile, alternateIPs, alternateDNS); err != nil {
				glog.Errorf("Unable to generate self signed cert: %v", err)
			} else {
				glog.Infof("Using self-signed cert (%s, %s)", s.TLSCertFile, s.TLSPrivateKeyFile)
			}
		}

		go func() {
			defer util.HandleCrash()
			for {
				// err == systemd.SdNotifyNoSocket when not running on a systemd system
				if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
					glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
				}
				if err := secureServer.ListenAndServeTLS(s.TLSCertFile, s.TLSPrivateKeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}
	handler := apiserver.TimeoutHandler(m.InsecureHandler, longRunningTimeout)
	http := &http.Server{
		Addr:           insecureLocation,
		Handler:        apiserver.RecoverPanics(handler),
		MaxHeaderBytes: 1 << 20,
	}
	if secureLocation == "" {
		// err == systemd.SdNotifyNoSocket when not running on a systemd system
		if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
			glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
		}
	}
	glog.Infof("Serving insecurely on %s", insecureLocation)
	glog.Fatal(http.ListenAndServe())
	return nil
}
Exemplo n.º 21
0
func startEtcdOrProxyV2() {
	grpc.EnableTracing = false

	cfg := newConfig()
	defaultInitialCluster := cfg.InitialCluster

	err := cfg.parse(os.Args[1:])
	if err != nil {
		plog.Errorf("error verifying flags, %v. See 'etcd --help'.", err)
		switch err {
		case embed.ErrUnsetAdvertiseClientURLsFlag:
			plog.Errorf("When listening on specific address(es), this etcd process must advertise accessible url(s) to each connected client.")
		}
		os.Exit(1)
	}
	setupLogging(cfg)

	var stopped <-chan struct{}
	var errc <-chan error

	plog.Infof("etcd Version: %s\n", version.Version)
	plog.Infof("Git SHA: %s\n", version.GitSHA)
	plog.Infof("Go Version: %s\n", runtime.Version())
	plog.Infof("Go OS/Arch: %s/%s\n", runtime.GOOS, runtime.GOARCH)

	GoMaxProcs := runtime.GOMAXPROCS(0)
	plog.Infof("setting maximum number of CPUs to %d, total number of available CPUs is %d", GoMaxProcs, runtime.NumCPU())

	// TODO: check whether fields are set instead of whether fields have default value
	defaultHost, defaultHostErr := cfg.IsDefaultHost()
	defaultHostOverride := defaultHost == "" || defaultHostErr == nil
	if (defaultHostOverride || cfg.Name != embed.DefaultName) && cfg.InitialCluster == defaultInitialCluster {
		cfg.InitialCluster = cfg.InitialClusterFromName(cfg.Name)
	}

	if cfg.Dir == "" {
		cfg.Dir = fmt.Sprintf("%v.etcd", cfg.Name)
		plog.Warningf("no data-dir provided, using default data-dir ./%s", cfg.Dir)
	}

	which := identifyDataDirOrDie(cfg.Dir)
	if which != dirEmpty {
		plog.Noticef("the server is already initialized as %v before, starting as etcd %v...", which, which)
		switch which {
		case dirMember:
			stopped, errc, err = startEtcd(&cfg.Config)
		case dirProxy:
			err = startProxy(cfg)
		default:
			plog.Panicf("unhandled dir type %v", which)
		}
	} else {
		shouldProxy := cfg.isProxy()
		if !shouldProxy {
			stopped, errc, err = startEtcd(&cfg.Config)
			if derr, ok := err.(*etcdserver.DiscoveryError); ok && derr.Err == discovery.ErrFullCluster {
				if cfg.shouldFallbackToProxy() {
					plog.Noticef("discovery cluster full, falling back to %s", fallbackFlagProxy)
					shouldProxy = true
				}
			}
		}
		if shouldProxy {
			err = startProxy(cfg)
		}
	}

	if err != nil {
		if derr, ok := err.(*etcdserver.DiscoveryError); ok {
			switch derr.Err {
			case discovery.ErrDuplicateID:
				plog.Errorf("member %q has previously registered with discovery service token (%s).", cfg.Name, cfg.Durl)
				plog.Errorf("But etcd could not find valid cluster configuration in the given data dir (%s).", cfg.Dir)
				plog.Infof("Please check the given data dir path if the previous bootstrap succeeded")
				plog.Infof("or use a new discovery token if the previous bootstrap failed.")
			case discovery.ErrDuplicateName:
				plog.Errorf("member with duplicated name has registered with discovery service token(%s).", cfg.Durl)
				plog.Errorf("please check (cURL) the discovery token for more information.")
				plog.Errorf("please do not reuse the discovery token and generate a new one to bootstrap the cluster.")
			default:
				plog.Errorf("%v", err)
				plog.Infof("discovery token %s was used, but failed to bootstrap the cluster.", cfg.Durl)
				plog.Infof("please generate a new discovery token and try to bootstrap again.")
			}
			os.Exit(1)
		}

		if strings.Contains(err.Error(), "include") && strings.Contains(err.Error(), "--initial-cluster") {
			plog.Infof("%v", err)
			if cfg.InitialCluster == cfg.InitialClusterFromName(cfg.Name) {
				plog.Infof("forgot to set --initial-cluster flag?")
			}
			if types.URLs(cfg.APUrls).String() == embed.DefaultInitialAdvertisePeerURLs {
				plog.Infof("forgot to set --initial-advertise-peer-urls flag?")
			}
			if cfg.InitialCluster == cfg.InitialClusterFromName(cfg.Name) && len(cfg.Durl) == 0 {
				plog.Infof("if you want to use discovery service, please set --discovery flag.")
			}
			os.Exit(1)
		}
		plog.Fatalf("%v", err)
	}

	osutil.HandleInterrupts()

	if systemdutil.IsRunningSystemd() {
		// At this point, the initialization of etcd is done.
		// The listeners are listening on the TCP ports and ready
		// for accepting connections. The etcd instance should be
		// joined with the cluster and ready to serve incoming
		// connections.
		sent, err := daemon.SdNotify(false, "READY=1")
		if err != nil {
			plog.Errorf("failed to notify systemd for readiness: %v", err)
		}
		if !sent {
			plog.Errorf("forgot to set Type=notify in systemd service file?")
		}
	}

	select {
	case lerr := <-errc:
		// fatal out on listener errors
		plog.Fatal(lerr)
	case <-stopped:
	}

	osutil.Exit(0)
}
Exemplo n.º 22
0
func (s *GenericAPIServer) Run() {
	// install APIs which depend on other APIs to be installed
	if s.enableSwaggerSupport {
		s.InstallSwaggerAPI()
	}
	if s.enableOpenAPISupport {
		s.InstallOpenAPI()
	}

	if s.SecureServingInfo != nil {
		secureServer := &http.Server{
			Addr:           s.SecureServingInfo.BindAddress,
			Handler:        s.Handler,
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Can't use SSLv3 because of POODLE and BEAST
				// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
				// Can't use TLSv1.1 because of RC4 cipher usage
				MinVersion: tls.VersionTLS12,
			},
		}

		if len(s.SecureServingInfo.ClientCA) > 0 {
			clientCAs, err := certutil.NewPool(s.SecureServingInfo.ClientCA)
			if err != nil {
				glog.Fatalf("Unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
			// "h2" NextProtos is necessary for enabling HTTP2 for go's 1.7 HTTP Server
			secureServer.TLSConfig.NextProtos = []string{"h2"}

		}

		// It would be nice to set a fqdn subject alt name, but only the kubelets know, the apiserver is clueless
		// alternateDNS = append(alternateDNS, "kubernetes.default.svc.CLUSTER.DNS.NAME")
		if s.SecureServingInfo.ServerCert.Generate && !certutil.CanReadCertOrKey(s.SecureServingInfo.ServerCert.CertFile, s.SecureServingInfo.ServerCert.KeyFile) {
			// TODO (cjcullen): Is ClusterIP the right address to sign a cert with?
			alternateIPs := []net.IP{s.ServiceReadWriteIP}
			alternateDNS := []string{"kubernetes.default.svc", "kubernetes.default", "kubernetes", "localhost"}

			if err := certutil.GenerateSelfSignedCert(s.ClusterIP.String(), s.SecureServingInfo.ServerCert.CertFile, s.SecureServingInfo.ServerCert.KeyFile, alternateIPs, alternateDNS); err != nil {
				glog.Errorf("Unable to generate self signed cert: %v", err)
			} else {
				glog.Infof("Using self-signed cert (%s, %s)", s.SecureServingInfo.ServerCert.CertFile, s.SecureServingInfo.ServerCert.KeyFile)
			}
		}

		glog.Infof("Serving securely on %s", s.SecureServingInfo.BindAddress)
		go func() {
			defer utilruntime.HandleCrash()

			for {
				if err := secureServer.ListenAndServeTLS(s.SecureServingInfo.ServerCert.CertFile, s.SecureServingInfo.ServerCert.KeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}

	if s.InsecureServingInfo != nil {
		insecureServer := &http.Server{
			Addr:           s.InsecureServingInfo.BindAddress,
			Handler:        s.InsecureHandler,
			MaxHeaderBytes: 1 << 20,
		}
		glog.Infof("Serving insecurely on %s", s.InsecureServingInfo.BindAddress)
		go func() {
			defer utilruntime.HandleCrash()

			for {
				if err := insecureServer.ListenAndServe(); err != nil {
					glog.Errorf("Unable to listen for insecure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}

	// Attempt to verify the server came up for 20 seconds (100 tries * 100ms, 100ms timeout per try) per port
	if s.SecureServingInfo != nil {
		if err := waitForSuccessfulDial(true, "tcp", s.SecureServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100); err != nil {
			glog.Fatalf("Secure server never started: %v", err)
		}
	}
	if s.InsecureServingInfo != nil {
		if err := waitForSuccessfulDial(false, "tcp", s.InsecureServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100); err != nil {
			glog.Fatalf("Insecure server never started: %v", err)
		}
	}

	s.RunPostStartHooks()

	// err == systemd.SdNotifyNoSocket when not running on a systemd system
	if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
		glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
	}

	select {}
}
Exemplo n.º 23
0
// Run runs the specified APIServer.  This should never exit.
func (s *APIServer) Run(_ []string) error {
	s.verifyClusterIPFlags()

	// If advertise-address is not specified, use bind-address. If bind-address
	// is not usable (unset, 0.0.0.0, or loopback), setDefaults() in
	// pkg/master/master.go will do the right thing and use the host's default
	// interface.
	if s.AdvertiseAddress == nil || s.AdvertiseAddress.IsUnspecified() {
		s.AdvertiseAddress = s.BindAddress
	}

	if (s.EtcdConfigFile != "" && len(s.EtcdServerList) != 0) || (s.EtcdConfigFile == "" && len(s.EtcdServerList) == 0) {
		glog.Fatalf("specify either --etcd-servers or --etcd-config")
	}

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		HostNetworkSources:                     []string{},
		PerConnectionBandwidthLimitBytesPerSec: s.MaxConnectionBytesPerSec,
	})

	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	if err != nil {
		glog.Fatalf("Cloud provider could not be initialized: %v", err)
	}

	kubeletClient, err := client.NewKubeletClient(&s.KubeletConfig)
	if err != nil {
		glog.Fatalf("Failure to start kubelet client: %v", err)
	}

	// "api/all=false" allows users to selectively enable specific api versions.
	disableAllAPIs := false
	allAPIFlagValue, ok := s.RuntimeConfig["api/all"]
	if ok && allAPIFlagValue == "false" {
		disableAllAPIs = true
	}

	// "api/legacy=false" allows users to disable legacy api versions.
	disableLegacyAPIs := false
	legacyAPIFlagValue, ok := s.RuntimeConfig["api/legacy"]
	if ok && legacyAPIFlagValue == "false" {
		disableLegacyAPIs = true
	}
	_ = disableLegacyAPIs // hush the compiler while we don't have legacy APIs to disable.

	// "api/v1={true|false} allows users to enable/disable v1 API.
	// This takes preference over api/all and api/legacy, if specified.
	disableV1 := disableAllAPIs
	disableV1 = !s.getRuntimeConfigValue("api/v1", !disableV1)

	// "experimental/v1={true|false} allows users to enable/disable the experimental API.
	// This takes preference over api/all, if specified.
	enableExp := s.getRuntimeConfigValue("experimental/v1", false)

	clientConfig := &client.Config{
		Host:    net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort)),
		Version: s.StorageVersion,
	}
	client, err := client.New(clientConfig)
	if err != nil {
		glog.Fatalf("Invalid server address: %v", err)
	}

	etcdStorage, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, latest.InterfacesFor, latest.Version, s.StorageVersion, s.EtcdPathPrefix)
	if err != nil {
		glog.Fatalf("Invalid storage version or misconfigured etcd: %v", err)
	}
	expEtcdStorage, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, explatest.InterfacesFor, explatest.Version, s.ExpStorageVersion, s.EtcdPathPrefix)
	if err != nil {
		glog.Fatalf("Invalid experimental storage version or misconfigured etcd: %v", err)
	}

	n := s.ServiceClusterIPRange

	// Default to the private server key for service account token signing
	if s.ServiceAccountKeyFile == "" && s.TLSPrivateKeyFile != "" {
		if apiserver.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFile = s.TLSPrivateKeyFile
		} else {
			glog.Warning("no RSA key provided, service account token authentication disabled")
		}
	}
	authenticator, err := apiserver.NewAuthenticator(s.BasicAuthFile, s.ClientCAFile, s.TokenAuthFile, s.ServiceAccountKeyFile, s.ServiceAccountLookup, etcdStorage, s.KeystoneURL)
	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	authorizer, err := apiserver.NewAuthorizerFromAuthorizationConfig(s.AuthorizationMode, s.AuthorizationPolicyFile)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	admissionController := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile)

	if len(s.ExternalHost) == 0 {
		// TODO: extend for other providers
		if s.CloudProvider == "gce" {
			instances, supported := cloud.Instances()
			if !supported {
				glog.Fatalf("gce cloud provider has no instances.  this shouldn't happen. exiting.")
			}
			name, err := os.Hostname()
			if err != nil {
				glog.Fatalf("failed to get hostname: %v", err)
			}
			addrs, err := instances.NodeAddresses(name)
			if err != nil {
				glog.Warningf("unable to obtain external host address from cloud provider: %v", err)
			} else {
				for _, addr := range addrs {
					if addr.Type == api.NodeExternalIP {
						s.ExternalHost = addr.Address
					}
				}
			}
		}
	}
	var installSSH master.InstallSSHKey
	if cloud != nil {
		if instances, supported := cloud.Instances(); supported {
			installSSH = instances.AddSSHKeyToAllInstances
		}
	}
	config := &master.Config{
		DatabaseStorage:    etcdStorage,
		ExpDatabaseStorage: expEtcdStorage,

		EventTTL:               s.EventTTL,
		KubeletClient:          kubeletClient,
		ServiceClusterIPRange:  &n,
		EnableCoreControllers:  true,
		EnableLogsSupport:      s.EnableLogsSupport,
		EnableUISupport:        true,
		EnableSwaggerSupport:   true,
		EnableProfiling:        s.EnableProfiling,
		EnableIndex:            true,
		APIPrefix:              s.APIPrefix,
		ExpAPIPrefix:           s.ExpAPIPrefix,
		CorsAllowedOriginList:  s.CorsAllowedOriginList,
		ReadWritePort:          s.SecurePort,
		PublicAddress:          s.AdvertiseAddress,
		Authenticator:          authenticator,
		SupportsBasicAuth:      len(s.BasicAuthFile) > 0,
		Authorizer:             authorizer,
		AdmissionControl:       admissionController,
		DisableV1:              disableV1,
		EnableExp:              enableExp,
		MasterServiceNamespace: s.MasterServiceNamespace,
		ClusterName:            s.ClusterName,
		ExternalHost:           s.ExternalHost,
		MinRequestTimeout:      s.MinRequestTimeout,
		SSHUser:                s.SSHUser,
		SSHKeyfile:             s.SSHKeyfile,
		InstallSSHKey:          installSSH,
		ServiceNodePortRange:   s.ServiceNodePortRange,
	}
	m := master.New(config)

	// We serve on 2 ports.  See docs/accessing_the_api.md
	secureLocation := ""
	if s.SecurePort != 0 {
		secureLocation = net.JoinHostPort(s.BindAddress.String(), strconv.Itoa(s.SecurePort))
	}
	insecureLocation := net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort))

	// See the flag commentary to understand our assumptions when opening the read-only and read-write ports.

	var sem chan bool
	if s.MaxRequestsInFlight > 0 {
		sem = make(chan bool, s.MaxRequestsInFlight)
	}

	longRunningRE := regexp.MustCompile(s.LongRunningRequestRE)
	longRunningTimeout := func(req *http.Request) (<-chan time.Time, string) {
		// TODO unify this with apiserver.MaxInFlightLimit
		if longRunningRE.MatchString(req.URL.Path) || req.URL.Query().Get("watch") == "true" {
			return nil, ""
		}
		return time.After(time.Minute), ""
	}

	if secureLocation != "" {
		handler := apiserver.TimeoutHandler(m.Handler, longRunningTimeout)
		secureServer := &http.Server{
			Addr:           secureLocation,
			Handler:        apiserver.MaxInFlightLimit(sem, longRunningRE, apiserver.RecoverPanics(handler)),
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Change default from SSLv3 to TLSv1.0 (because of POODLE vulnerability)
				MinVersion: tls.VersionTLS10,
			},
		}

		if len(s.ClientCAFile) > 0 {
			clientCAs, err := util.CertPoolFromFile(s.ClientCAFile)
			if err != nil {
				glog.Fatalf("unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
		}

		glog.Infof("Serving securely on %s", secureLocation)
		go func() {
			defer util.HandleCrash()
			for {
				if s.TLSCertFile == "" && s.TLSPrivateKeyFile == "" {
					s.TLSCertFile = path.Join(s.CertDirectory, "apiserver.crt")
					s.TLSPrivateKeyFile = path.Join(s.CertDirectory, "apiserver.key")
					// TODO (cjcullen): Is PublicAddress the right address to sign a cert with?
					alternateIPs := []net.IP{config.ServiceReadWriteIP}
					alternateDNS := []string{"kubernetes.default.svc", "kubernetes.default", "kubernetes"}
					// It would be nice to set a fqdn subject alt name, but only the kubelets know, the apiserver is clueless
					// alternateDNS = append(alternateDNS, "kubernetes.default.svc.CLUSTER.DNS.NAME")
					if err := util.GenerateSelfSignedCert(config.PublicAddress.String(), s.TLSCertFile, s.TLSPrivateKeyFile, alternateIPs, alternateDNS); err != nil {
						glog.Errorf("Unable to generate self signed cert: %v", err)
					} else {
						glog.Infof("Using self-signed cert (%s, %s)", s.TLSCertFile, s.TLSPrivateKeyFile)
					}
				}
				// err == systemd.SdNotifyNoSocket when not running on a systemd system
				if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
					glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
				}
				if err := secureServer.ListenAndServeTLS(s.TLSCertFile, s.TLSPrivateKeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}
	handler := apiserver.TimeoutHandler(m.InsecureHandler, longRunningTimeout)
	http := &http.Server{
		Addr:           insecureLocation,
		Handler:        apiserver.RecoverPanics(handler),
		MaxHeaderBytes: 1 << 20,
	}
	if secureLocation == "" {
		// err == systemd.SdNotifyNoSocket when not running on a systemd system
		if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
			glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
		}
	}
	glog.Infof("Serving insecurely on %s", insecureLocation)
	glog.Fatal(http.ListenAndServe())
	return nil
}
Exemplo n.º 24
0
func run(traefikConfiguration *TraefikConfiguration) {
	fmtlog.SetFlags(fmtlog.Lshortfile | fmtlog.LstdFlags)

	// load global configuration
	globalConfiguration := traefikConfiguration.GlobalConfiguration

	http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = globalConfiguration.MaxIdleConnsPerHost
	if globalConfiguration.InsecureSkipVerify {
		http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
	}
	loggerMiddleware := middlewares.NewLogger(globalConfiguration.AccessLogsFile)
	defer loggerMiddleware.Close()

	if globalConfiguration.File != nil && len(globalConfiguration.File.Filename) == 0 {
		// no filename, setting to global config file
		if len(traefikConfiguration.ConfigFile) != 0 {
			globalConfiguration.File.Filename = traefikConfiguration.ConfigFile
		} else {
			log.Errorln("Error using file configuration backend, no filename defined")
		}
	}

	if len(globalConfiguration.EntryPoints) == 0 {
		globalConfiguration.EntryPoints = map[string]*EntryPoint{"http": {Address: ":80"}}
		globalConfiguration.DefaultEntryPoints = []string{"http"}
	}

	if globalConfiguration.Debug {
		globalConfiguration.LogLevel = "DEBUG"
	}

	// logging
	level, err := logrus.ParseLevel(strings.ToLower(globalConfiguration.LogLevel))
	if err != nil {
		log.Error("Error getting level", err)
	}
	log.SetLevel(level)
	if len(globalConfiguration.TraefikLogsFile) > 0 {
		fi, err := os.OpenFile(globalConfiguration.TraefikLogsFile, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
		defer func() {
			if err := fi.Close(); err != nil {
				log.Error("Error closing file", err)
			}
		}()
		if err != nil {
			log.Error("Error opening file", err)
		} else {
			log.SetOutput(fi)
			log.SetFormatter(&logrus.TextFormatter{DisableColors: true, FullTimestamp: true, DisableSorting: true})
		}
	} else {
		log.SetFormatter(&logrus.TextFormatter{FullTimestamp: true, DisableSorting: true})
	}
	jsonConf, _ := json.Marshal(globalConfiguration)
	log.Infof("Traefik version %s built on %s", version.Version, version.BuildDate)

	if globalConfiguration.CheckNewVersion {
		ticker := time.NewTicker(24 * time.Hour)
		safe.Go(func() {
			version.CheckNewVersion()
			for {
				select {
				case <-ticker.C:
					version.CheckNewVersion()
				}
			}
		})
	}

	if len(traefikConfiguration.ConfigFile) != 0 {
		log.Infof("Using TOML configuration file %s", traefikConfiguration.ConfigFile)
	}
	log.Debugf("Global configuration loaded %s", string(jsonConf))
	server := NewServer(globalConfiguration)
	server.Start()
	defer server.Close()
	sent, err := daemon.SdNotify("READY=1")
	if !sent && err != nil {
		log.Error("Fail to notify", err)
	}
	server.Wait()
	log.Info("Shutting down")
}
Exemplo n.º 25
0
func StartNode() error {
	go daemon.SdNotify("READY=1")

	return nil
}
Exemplo n.º 26
0
func Main() {
	cfg := NewConfig()
	err := cfg.Parse(os.Args[1:])
	if err != nil {
		plog.Errorf("error verifying flags, %v. See 'etcd --help'.", err)
		switch err {
		case errUnsetAdvertiseClientURLsFlag:
			plog.Errorf("When listening on specific address(es), this etcd process must advertise accessible url(s) to each connected client.")
		}
		os.Exit(1)
	}
	setupLogging(cfg)

	var stopped <-chan struct{}

	GoMaxProcs := 1
	if envMaxProcs, err := strconv.Atoi(os.Getenv("GOMAXPROCS")); err == nil {
		GoMaxProcs = envMaxProcs
	}
	plog.Infof("setting maximum number of CPUs to %d, total number of available CPUs is %d", GoMaxProcs, runtime.NumCPU())
	runtime.GOMAXPROCS(GoMaxProcs)

	// TODO: check whether fields are set instead of whether fields have default value
	if cfg.name != defaultName && cfg.initialCluster == initialClusterFromName(defaultName) {
		cfg.initialCluster = initialClusterFromName(cfg.name)
	}

	if cfg.dir == "" {
		cfg.dir = fmt.Sprintf("%v.etcd", cfg.name)
		plog.Warningf("no data-dir provided, using default data-dir ./%s", cfg.dir)
	}

	which := identifyDataDirOrDie(cfg.dir)
	if which != dirEmpty {
		plog.Noticef("the server is already initialized as %v before, starting as etcd %v...", which, which)
		switch which {
		case dirMember:
			stopped, err = startEtcd(cfg)
		case dirProxy:
			err = startProxy(cfg)
		default:
			plog.Panicf("unhandled dir type %v", which)
		}
	} else {
		shouldProxy := cfg.isProxy()
		if !shouldProxy {
			stopped, err = startEtcd(cfg)
			if err == discovery.ErrFullCluster && cfg.shouldFallbackToProxy() {
				plog.Noticef("discovery cluster full, falling back to %s", fallbackFlagProxy)
				shouldProxy = true
			}
		}
		if shouldProxy {
			err = startProxy(cfg)
		}
	}

	if err != nil {
		switch err {
		case discovery.ErrDuplicateID:
			plog.Errorf("member %q has previously registered with discovery service token (%s).", cfg.name, cfg.durl)
			plog.Errorf("But etcd could not find valid cluster configuration in the given data dir (%s).", cfg.dir)
			plog.Infof("Please check the given data dir path if the previous bootstrap succeeded")
			plog.Infof("or use a new discovery token if the previous bootstrap failed.")
			os.Exit(1)
		case discovery.ErrDuplicateName:
			plog.Errorf("member with duplicated name has registered with discovery service token(%s).", cfg.durl)
			plog.Errorf("please check (cURL) the discovery token for more information.")
			plog.Errorf("please do not reuse the discovery token and generate a new one to bootstrap the cluster.")
		default:
			plog.Fatalf("%v", err)
		}
	}

	osutil.HandleInterrupts()

	if systemdutil.IsRunningSystemd() {
		// At this point, the initialization of etcd is done.
		// The listeners are listening on the TCP ports and ready
		// for accepting connections.
		// The http server is probably ready for serving incoming
		// connections. If it is not, the connection might be pending
		// for less than one second.
		err := daemon.SdNotify("READY=1")
		if err != nil {
			plog.Errorf("failed to notify systemd for readiness")
		}
	}

	<-stopped
	osutil.Exit(0)
}
Exemplo n.º 27
0
func (s *GenericAPIServer) Run() {
	// install APIs which depend on other APIs to be installed
	if s.enableSwaggerSupport {
		s.InstallSwaggerAPI()
	}
	if s.enableOpenAPISupport {
		s.InstallOpenAPI()
	}

	if s.SecureServingInfo != nil && s.Handler != nil {
		secureServer := &http.Server{
			Addr:           s.SecureServingInfo.BindAddress,
			Handler:        s.Handler,
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Can't use SSLv3 because of POODLE and BEAST
				// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
				// Can't use TLSv1.1 because of RC4 cipher usage
				MinVersion: tls.VersionTLS12,
			},
		}

		if len(s.SecureServingInfo.ClientCA) > 0 {
			clientCAs, err := certutil.NewPool(s.SecureServingInfo.ClientCA)
			if err != nil {
				glog.Fatalf("Unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
			// "h2" NextProtos is necessary for enabling HTTP2 for go's 1.7 HTTP Server
			secureServer.TLSConfig.NextProtos = []string{"h2"}

		}

		glog.Infof("Serving securely on %s", s.SecureServingInfo.BindAddress)
		go func() {
			defer utilruntime.HandleCrash()

			for {
				if err := secureServer.ListenAndServeTLS(s.SecureServingInfo.ServerCert.CertFile, s.SecureServingInfo.ServerCert.KeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}

	if s.InsecureServingInfo != nil && s.InsecureHandler != nil {
		insecureServer := &http.Server{
			Addr:           s.InsecureServingInfo.BindAddress,
			Handler:        s.InsecureHandler,
			MaxHeaderBytes: 1 << 20,
		}
		glog.Infof("Serving insecurely on %s", s.InsecureServingInfo.BindAddress)
		go func() {
			defer utilruntime.HandleCrash()

			for {
				if err := insecureServer.ListenAndServe(); err != nil {
					glog.Errorf("Unable to listen for insecure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}

	// Attempt to verify the server came up for 20 seconds (100 tries * 100ms, 100ms timeout per try) per port
	if s.SecureServingInfo != nil {
		if err := waitForSuccessfulDial(true, "tcp", s.SecureServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100); err != nil {
			glog.Fatalf("Secure server never started: %v", err)
		}
	}
	if s.InsecureServingInfo != nil {
		if err := waitForSuccessfulDial(false, "tcp", s.InsecureServingInfo.BindAddress, 100*time.Millisecond, 100*time.Millisecond, 100); err != nil {
			glog.Fatalf("Insecure server never started: %v", err)
		}
	}

	s.RunPostStartHooks()

	// err == systemd.SdNotifyNoSocket when not running on a systemd system
	if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
		glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
	}

	select {}
}
Exemplo n.º 28
0
func (s *GenericAPIServer) Run(options *options.ServerRunOptions) {
	// install APIs which depend on other APIs to be installed
	if s.enableSwaggerSupport {
		s.InstallSwaggerAPI()
	}
	if s.enableOpenAPISupport {
		s.InstallOpenAPI()
	}

	secureStartedCh := make(chan struct{})
	if options.SecurePort != 0 {
		secureLocation := net.JoinHostPort(options.BindAddress.String(), strconv.Itoa(options.SecurePort))
		secureServer := &http.Server{
			Addr:           secureLocation,
			Handler:        s.Handler,
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Can't use SSLv3 because of POODLE and BEAST
				// Can't use TLSv1.0 because of POODLE and BEAST using CBC cipher
				// Can't use TLSv1.1 because of RC4 cipher usage
				MinVersion: tls.VersionTLS12,
			},
		}

		if len(options.ClientCAFile) > 0 {
			clientCAs, err := certutil.NewPool(options.ClientCAFile)
			if err != nil {
				glog.Fatalf("Unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
			// "h2" NextProtos is necessary for enabling HTTP2 for go's 1.7 HTTP Server
			secureServer.TLSConfig.NextProtos = []string{"h2"}

		}

		glog.Infof("Serving securely on %s", secureLocation)
		if options.TLSCertFile == "" && options.TLSPrivateKeyFile == "" {
			options.TLSCertFile = path.Join(options.CertDirectory, "apiserver.crt")
			options.TLSPrivateKeyFile = path.Join(options.CertDirectory, "apiserver.key")
			// TODO (cjcullen): Is ClusterIP the right address to sign a cert with?
			alternateIPs := []net.IP{s.ServiceReadWriteIP}
			alternateDNS := []string{"kubernetes.default.svc", "kubernetes.default", "kubernetes", "localhost"}
			// It would be nice to set a fqdn subject alt name, but only the kubelets know, the apiserver is clueless
			// alternateDNS = append(alternateDNS, "kubernetes.default.svc.CLUSTER.DNS.NAME")
			if !certutil.CanReadCertOrKey(options.TLSCertFile, options.TLSPrivateKeyFile) {
				if err := certutil.GenerateSelfSignedCert(s.ClusterIP.String(), options.TLSCertFile, options.TLSPrivateKeyFile, alternateIPs, alternateDNS); err != nil {
					glog.Errorf("Unable to generate self signed cert: %v", err)
				} else {
					glog.Infof("Using self-signed cert (%s, %s)", options.TLSCertFile, options.TLSPrivateKeyFile)
				}
			}
		}

		go func() {
			defer utilruntime.HandleCrash()

			notifyStarted := sync.Once{}
			for {
				if err := secureServer.ListenAndServeTLS(options.TLSCertFile, options.TLSPrivateKeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				} else {
					notifyStarted.Do(func() {
						close(secureStartedCh)
					})
				}
				time.Sleep(15 * time.Second)
			}
		}()
	} else {
		close(secureStartedCh)
	}

	insecureLocation := net.JoinHostPort(options.InsecureBindAddress.String(), strconv.Itoa(options.InsecurePort))
	insecureServer := &http.Server{
		Addr:           insecureLocation,
		Handler:        s.InsecureHandler,
		MaxHeaderBytes: 1 << 20,
	}
	insecureStartedCh := make(chan struct{})
	glog.Infof("Serving insecurely on %s", insecureLocation)
	go func() {
		defer utilruntime.HandleCrash()

		notifyStarted := sync.Once{}
		for {
			if err := insecureServer.ListenAndServe(); err != nil {
				glog.Errorf("Unable to listen for insecure (%v); will try again.", err)
			} else {
				notifyStarted.Do(func() {
					close(insecureStartedCh)
				})
			}
			time.Sleep(15 * time.Second)
		}
	}()

	<-secureStartedCh
	<-insecureStartedCh
	s.RunPostStartHooks(PostStartHookContext{})

	// err == systemd.SdNotifyNoSocket when not running on a systemd system
	if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
		glog.Errorf("Unable to send systemd daemon successful start message: %v\n", err)
	}

	select {}
}
Exemplo n.º 29
0
// notifySystem sends a message to the host when the server is ready to be used
func notifySystem() {
	// Tell the init daemon we are accepting requests
	go systemdDaemon.SdNotify("READY=1")
}
Exemplo n.º 30
0
// Run runs the specified APIServer.  This should never exit.
func (s *APIServer) Run(_ []string) error {
	s.verifyClusterIPFlags()

	// If advertise-address is not specified, use bind-address. If bind-address
	// is also unset (or 0.0.0.0), setDefaults() in pkg/master/master.go will
	// do the right thing and use the host's default interface.
	if s.AdvertiseAddress == nil || net.IP(s.AdvertiseAddress).IsUnspecified() {
		s.AdvertiseAddress = s.BindAddress
	}

	if (s.EtcdConfigFile != "" && len(s.EtcdServerList) != 0) || (s.EtcdConfigFile == "" && len(s.EtcdServerList) == 0) {
		glog.Fatalf("specify either --etcd-servers or --etcd-config")
	}

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		HostNetworkSources: []string{},
	})

	cloud := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)

	qingletClient, err := client.NewQingletClient(&s.QingletConfig)
	if err != nil {
		glog.Fatalf("Failure to start qinglet client: %v", err)
	}

	// "api/all=false" allows users to selectively enable specific api versions.
	disableAllAPIs := false
	allAPIFlagValue, ok := s.RuntimeConfig["api/all"]
	if ok && allAPIFlagValue == "false" {
		disableAllAPIs = true
	}

	// "api/legacy=false" allows users to disable legacy api versions.
	// Right now, v1beta1 and v1beta2 are considered legacy.
	disableLegacyAPIs := false
	legacyAPIFlagValue, ok := s.RuntimeConfig["api/legacy"]
	if ok && legacyAPIFlagValue == "false" {
		disableLegacyAPIs = true
	}
	_ = disableLegacyAPIs // hush the compiler while we don't have legacy APIs to disable.

	// "api/v1beta3={true|false} allows users to enable/disable v1beta3 API.
	// This takes preference over api/all and api/legacy, if specified.
	disableV1beta3 := disableAllAPIs
	disableV1beta3 = !s.getRuntimeConfigValue("api/v1beta3", !disableV1beta3)

	// "api/v1={true|false} allows users to enable/disable v1 API.
	// This takes preference over api/all and api/legacy, if specified.
	disableV1 := disableAllAPIs
	disableV1 = !s.getRuntimeConfigValue("api/v1", !disableV1)

	// TODO: expose same flags as client.BindClientConfigFlags but for a server
	clientConfig := &client.Config{
		Host:    net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort)),
		Version: s.StorageVersion,
	}
	client, err := client.New(clientConfig)
	if err != nil {
		glog.Fatalf("Invalid server address: %v", err)
	}

	helper, err := newEtcd(s.EtcdConfigFile, s.EtcdServerList, s.StorageVersion, s.EtcdPathPrefix)
	if err != nil {
		glog.Fatalf("Invalid storage version or misconfigured etcd: %v", err)
	}

	// TODO Is this the right place for migration to happen? Must *both* old and
	// new etcd prefix params be supplied for this to be valid?
	if s.OldEtcdPathPrefix != "" {
		if err = helper.MigrateKeys(s.OldEtcdPathPrefix); err != nil {
			glog.Fatalf("Migration of old etcd keys failed: %v", err)
		}
	}

	n := net.IPNet(s.ServiceClusterIPRange)

	// Default to the private server key for service account token signing
	if s.ServiceAccountKeyFile == "" && s.TLSPrivateKeyFile != "" {
		if apiserver.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFile = s.TLSPrivateKeyFile
		} else {
			glog.Warning("no RSA key provided, service account token authentication disabled")
		}
	}
	authenticator, err := apiserver.NewAuthenticator(s.BasicAuthFile, s.ClientCAFile, s.TokenAuthFile, s.ServiceAccountKeyFile, s.ServiceAccountLookup, helper)
	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	authorizer, err := apiserver.NewAuthorizerFromAuthorizationConfig(s.AuthorizationMode, s.AuthorizationPolicyFile)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	admissionController := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile)

	if len(s.ExternalHost) == 0 {
		// TODO: extend for other providers
		if s.CloudProvider == "gce" {
			instances, supported := cloud.Instances()
			if !supported {
				glog.Fatalf("gce cloud provider has no instances.  this shouldn't happen. exiting.")
			}
			name, err := os.Hostname()
			if err != nil {
				glog.Fatalf("failed to get hostname: %v", err)
			}
			addrs, err := instances.NodeAddresses(name)
			if err != nil {
				glog.Warningf("unable to obtain external host address from cloud provider: %v", err)
			} else {
				for _, addr := range addrs {
					if addr.Type == api.NodeExternalIP {
						s.ExternalHost = addr.Address
					}
				}
			}
		}
	}
	var installSSH master.InstallSSHKey
	if cloud != nil {
		if instances, supported := cloud.Instances(); supported {
			installSSH = instances.AddSSHKeyToAllInstances
		}
	}
	config := &master.Config{
		EtcdHelper:             helper,
		EventTTL:               s.EventTTL,
		QingletClient:          qingletClient,
		ServiceClusterIPRange:  &n,
		EnableCoreControllers:  true,
		EnableLogsSupport:      s.EnableLogsSupport,
		EnableUISupport:        true,
		EnableSwaggerSupport:   true,
		EnableProfiling:        s.EnableProfiling,
		EnableIndex:            true,
		APIPrefix:              s.APIPrefix,
		CorsAllowedOriginList:  s.CorsAllowedOriginList,
		ReadWritePort:          s.SecurePort,
		PublicAddress:          net.IP(s.AdvertiseAddress),
		Authenticator:          authenticator,
		SupportsBasicAuth:      len(s.BasicAuthFile) > 0,
		Authorizer:             authorizer,
		AdmissionControl:       admissionController,
		DisableV1Beta3:         disableV1beta3,
		DisableV1:              disableV1,
		MasterServiceNamespace: s.MasterServiceNamespace,
		ClusterName:            s.ClusterName,
		ExternalHost:           s.ExternalHost,
		MinRequestTimeout:      s.MinRequestTimeout,
		SSHUser:                s.SSHUser,
		SSHKeyfile:             s.SSHKeyfile,
		InstallSSHKey:          installSSH,
		ServiceNodePortRange:   s.ServiceNodePortRange,
	}
	m := master.New(config)

	// We serve on 2 ports.  See docs/accessing_the_api.md
	secureLocation := ""
	if s.SecurePort != 0 {
		secureLocation = net.JoinHostPort(s.BindAddress.String(), strconv.Itoa(s.SecurePort))
	}
	insecureLocation := net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort))

	// See the flag commentary to understand our assumptions when opening the read-only and read-write ports.

	var sem chan bool
	if s.MaxRequestsInFlight > 0 {
		sem = make(chan bool, s.MaxRequestsInFlight)
	}

	longRunningRE := regexp.MustCompile(s.LongRunningRequestRE)

	if secureLocation != "" {
		secureServer := &http.Server{
			Addr:           secureLocation,
			Handler:        apiserver.MaxInFlightLimit(sem, longRunningRE, apiserver.RecoverPanics(m.Handler)),
			ReadTimeout:    ReadWriteTimeout,
			WriteTimeout:   ReadWriteTimeout,
			MaxHeaderBytes: 1 << 20,
			TLSConfig: &tls.Config{
				// Change default from SSLv3 to TLSv1.0 (because of POODLE vulnerability)
				MinVersion: tls.VersionTLS10,
			},
		}

		if len(s.ClientCAFile) > 0 {
			clientCAs, err := util.CertPoolFromFile(s.ClientCAFile)
			if err != nil {
				glog.Fatalf("unable to load client CA file: %v", err)
			}
			// Populate PeerCertificates in requests, but don't reject connections without certificates
			// This allows certificates to be validated by authenticators, while still allowing other auth types
			secureServer.TLSConfig.ClientAuth = tls.RequestClientCert
			// Specify allowed CAs for client certificates
			secureServer.TLSConfig.ClientCAs = clientCAs
		}

		glog.Infof("Serving securely on %s", secureLocation)
		go func() {
			defer util.HandleCrash()
			for {
				if s.TLSCertFile == "" && s.TLSPrivateKeyFile == "" {
					s.TLSCertFile = path.Join(s.CertDirectory, "apiserver.crt")
					s.TLSPrivateKeyFile = path.Join(s.CertDirectory, "apiserver.key")
					// TODO (cjcullen): Is PublicAddress the right address to sign a cert with?
					if err := util.GenerateSelfSignedCert(config.PublicAddress.String(), s.TLSCertFile, s.TLSPrivateKeyFile); err != nil {
						glog.Errorf("Unable to generate self signed cert: %v", err)
					} else {
						glog.Infof("Using self-signed cert (%s, %s)", s.TLSCertFile, s.TLSPrivateKeyFile)
					}
				}
				// err == systemd.SdNotifyNoSocket when not running on a systemd system
				if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
					glog.Errorf("Unable to send systemd daemon sucessful start message: %v\n", err)
				}
				if err := secureServer.ListenAndServeTLS(s.TLSCertFile, s.TLSPrivateKeyFile); err != nil {
					glog.Errorf("Unable to listen for secure (%v); will try again.", err)
				}
				time.Sleep(15 * time.Second)
			}
		}()
	}
	http := &http.Server{
		Addr:           insecureLocation,
		Handler:        apiserver.RecoverPanics(m.InsecureHandler),
		ReadTimeout:    ReadWriteTimeout,
		WriteTimeout:   ReadWriteTimeout,
		MaxHeaderBytes: 1 << 20,
	}
	if secureLocation == "" {
		// err == systemd.SdNotifyNoSocket when not running on a systemd system
		if err := systemd.SdNotify("READY=1\n"); err != nil && err != systemd.SdNotifyNoSocket {
			glog.Errorf("Unable to send systemd daemon sucessful start message: %v\n", err)
		}
	}
	glog.Infof("Serving insecurely on %s", insecureLocation)
	glog.Fatal(http.ListenAndServe())
	return nil
}