Ejemplo n.º 1
0
// newAuthenticatorFromClientCAFile returns an authenticator.Request or an error
func newAuthenticatorFromClientCAFile(clientCAFile string) (authenticator.Request, error) {
	roots, err := util.CertPoolFromFile(clientCAFile)
	if err != nil {
		return nil, err
	}

	opts := x509.DefaultVerifyOptions()
	opts.Roots = roots

	return x509.New(opts, x509.CommonNameUserConversion), nil
}
Ejemplo n.º 2
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
}