Esempio n. 1
0
// Logger can be used to get the logger. If no logger has been set,
// the logs will be discarded.
func (b *Backend) Logger() log.Logger {
	if b.logger != nil {
		return b.logger
	}

	return logformat.NewVaultLoggerWithWriter(ioutil.Discard, log.LevelOff)
}
Esempio n. 2
0
func (c *ServerCommand) Run(args []string) int {
	var dev, verifyOnly, devHA bool
	var configPath []string
	var logLevel, devRootTokenID, devListenAddress string
	flags := c.Meta.FlagSet("server", meta.FlagSetDefault)
	flags.BoolVar(&dev, "dev", false, "")
	flags.StringVar(&devRootTokenID, "dev-root-token-id", "", "")
	flags.StringVar(&devListenAddress, "dev-listen-address", "", "")
	flags.StringVar(&logLevel, "log-level", "info", "")
	flags.BoolVar(&verifyOnly, "verify-only", false, "")
	flags.BoolVar(&devHA, "dev-ha", false, "")
	flags.Usage = func() { c.Ui.Output(c.Help()) }
	flags.Var((*sliceflag.StringFlag)(&configPath), "config", "config")
	if err := flags.Parse(args); err != nil {
		return 1
	}

	// Create a logger. We wrap it in a gated writer so that it doesn't
	// start logging too early.
	logGate := &gatedwriter.Writer{Writer: colorable.NewColorable(os.Stderr)}
	var level int
	switch logLevel {
	case "trace":
		level = log.LevelTrace
	case "debug":
		level = log.LevelDebug
	case "info":
		level = log.LevelInfo
	case "notice":
		level = log.LevelNotice
	case "warn":
		level = log.LevelWarn
	case "err":
		level = log.LevelError
	default:
		c.Ui.Output(fmt.Sprintf("Unknown log level %s", logLevel))
		return 1
	}

	logFormat := os.Getenv("VAULT_LOG_FORMAT")
	if logFormat == "" {
		logFormat = os.Getenv("LOGXI_FORMAT")
	}
	switch strings.ToLower(logFormat) {
	case "vault", "vault_json", "vault-json", "vaultjson", "json", "":
		c.logger = logformat.NewVaultLoggerWithWriter(logGate, level)
	default:
		c.logger = log.NewLogger(logGate, "vault")
		c.logger.SetLevel(level)
	}
	grpclog.SetLogger(&grpclogFaker{
		logger: c.logger,
	})

	if os.Getenv("VAULT_DEV_ROOT_TOKEN_ID") != "" && devRootTokenID == "" {
		devRootTokenID = os.Getenv("VAULT_DEV_ROOT_TOKEN_ID")
	}

	if os.Getenv("VAULT_DEV_LISTEN_ADDRESS") != "" && devListenAddress == "" {
		devListenAddress = os.Getenv("VAULT_DEV_LISTEN_ADDRESS")
	}

	if devHA {
		dev = true
	}

	// Validation
	if !dev {
		switch {
		case len(configPath) == 0:
			c.Ui.Output("At least one config path must be specified with -config")
			flags.Usage()
			return 1
		case devRootTokenID != "":
			c.Ui.Output("Root token ID can only be specified with -dev")
			flags.Usage()
			return 1
		}
	}

	// Load the configuration
	var config *server.Config
	if dev {
		config = server.DevConfig(devHA)
		if devListenAddress != "" {
			config.Listeners[0].Config["address"] = devListenAddress
		}
	}
	for _, path := range configPath {
		current, err := server.LoadConfig(path, c.logger)
		if err != nil {
			c.Ui.Output(fmt.Sprintf(
				"Error loading configuration from %s: %s", path, err))
			return 1
		}

		if config == nil {
			config = current
		} else {
			config = config.Merge(current)
		}
	}

	// Ensure at least one config was found.
	if config == nil {
		c.Ui.Output("No configuration files found.")
		return 1
	}

	// Ensure that a backend is provided
	if config.Backend == nil {
		c.Ui.Output("A physical backend must be specified")
		return 1
	}

	// If mlockall(2) isn't supported, show a warning.  We disable this
	// in dev because it is quite scary to see when first using Vault.
	if !dev && !mlock.Supported() {
		c.Ui.Output("==> WARNING: mlock not supported on this system!\n")
		c.Ui.Output("  An `mlockall(2)`-like syscall to prevent memory from being")
		c.Ui.Output("  swapped to disk is not supported on this system. Running")
		c.Ui.Output("  Vault on an mlockall(2) enabled system is much more secure.\n")
	}

	if err := c.setupTelemetry(config); err != nil {
		c.Ui.Output(fmt.Sprintf("Error initializing telemetry: %s", err))
		return 1
	}

	// Initialize the backend
	backend, err := physical.NewBackend(
		config.Backend.Type, c.logger, config.Backend.Config)
	if err != nil {
		c.Ui.Output(fmt.Sprintf(
			"Error initializing backend of type %s: %s",
			config.Backend.Type, err))
		return 1
	}

	infoKeys := make([]string, 0, 10)
	info := make(map[string]string)

	var seal vault.Seal = &vault.DefaultSeal{}

	// Ensure that the seal finalizer is called, even if using verify-only
	defer func() {
		if seal != nil {
			err = seal.Finalize()
			if err != nil {
				c.Ui.Error(fmt.Sprintf("Error finalizing seals: %v", err))
			}
		}
	}()

	if seal == nil {
		c.Ui.Error(fmt.Sprintf("Could not create seal"))
		return 1
	}

	coreConfig := &vault.CoreConfig{
		Physical:           backend,
		RedirectAddr:       config.Backend.RedirectAddr,
		HAPhysical:         nil,
		Seal:               seal,
		AuditBackends:      c.AuditBackends,
		CredentialBackends: c.CredentialBackends,
		LogicalBackends:    c.LogicalBackends,
		Logger:             c.logger,
		DisableCache:       config.DisableCache,
		DisableMlock:       config.DisableMlock,
		MaxLeaseTTL:        config.MaxLeaseTTL,
		DefaultLeaseTTL:    config.DefaultLeaseTTL,
		ClusterName:        config.ClusterName,
		CacheSize:          config.CacheSize,
	}

	var disableClustering bool

	// Initialize the separate HA physical backend, if it exists
	var ok bool
	if config.HABackend != nil {
		habackend, err := physical.NewBackend(
			config.HABackend.Type, c.logger, config.HABackend.Config)
		if err != nil {
			c.Ui.Output(fmt.Sprintf(
				"Error initializing backend of type %s: %s",
				config.HABackend.Type, err))
			return 1
		}

		if coreConfig.HAPhysical, ok = habackend.(physical.HABackend); !ok {
			c.Ui.Output("Specified HA backend does not support HA")
			return 1
		}

		if !coreConfig.HAPhysical.HAEnabled() {
			c.Ui.Output("Specified HA backend has HA support disabled; please consult documentation")
			return 1
		}

		coreConfig.RedirectAddr = config.HABackend.RedirectAddr
		disableClustering = config.HABackend.DisableClustering
		if !disableClustering {
			coreConfig.ClusterAddr = config.HABackend.ClusterAddr
		}
	} else {
		if coreConfig.HAPhysical, ok = backend.(physical.HABackend); ok {
			coreConfig.RedirectAddr = config.Backend.RedirectAddr
			disableClustering = config.Backend.DisableClustering
			if !disableClustering {
				coreConfig.ClusterAddr = config.Backend.ClusterAddr
			}
		}
	}

	if envRA := os.Getenv("VAULT_REDIRECT_ADDR"); envRA != "" {
		coreConfig.RedirectAddr = envRA
	} else if envAA := os.Getenv("VAULT_ADVERTISE_ADDR"); envAA != "" {
		coreConfig.RedirectAddr = envAA
	}

	// Attempt to detect the redirect address, if possible
	var detect physical.RedirectDetect
	if coreConfig.HAPhysical != nil && coreConfig.HAPhysical.HAEnabled() {
		detect, ok = coreConfig.HAPhysical.(physical.RedirectDetect)
	} else {
		detect, ok = coreConfig.Physical.(physical.RedirectDetect)
	}
	if ok && coreConfig.RedirectAddr == "" {
		redirect, err := c.detectRedirect(detect, config)
		if err != nil {
			c.Ui.Output(fmt.Sprintf("Error detecting redirect address: %s", err))
		} else if redirect == "" {
			c.Ui.Output("Failed to detect redirect address.")
		} else {
			coreConfig.RedirectAddr = redirect
		}
	}

	// After the redirect bits are sorted out, if no cluster address was
	// explicitly given, derive one from the redirect addr
	if disableClustering {
		coreConfig.ClusterAddr = ""
	} else if envCA := os.Getenv("VAULT_CLUSTER_ADDR"); envCA != "" {
		coreConfig.ClusterAddr = envCA
	} else if coreConfig.ClusterAddr == "" && coreConfig.RedirectAddr != "" {
		u, err := url.ParseRequestURI(coreConfig.RedirectAddr)
		if err != nil {
			c.Ui.Output(fmt.Sprintf("Error parsing redirect address %s: %v", coreConfig.RedirectAddr, err))
			return 1
		}
		host, port, err := net.SplitHostPort(u.Host)
		nPort, nPortErr := strconv.Atoi(port)
		if err != nil {
			// assume it's due to there not being a port specified, in which case
			// use 443
			host = u.Host
			nPort = 443
		}
		if nPortErr != nil {
			c.Ui.Output(fmt.Sprintf("Cannot parse %s as a numeric port: %v", port, nPortErr))
			return 1
		}
		u.Host = net.JoinHostPort(host, strconv.Itoa(nPort+1))
		// Will always be TLS-secured
		u.Scheme = "https"
		coreConfig.ClusterAddr = u.String()
	}
	if coreConfig.ClusterAddr != "" {
		// Force https as we'll always be TLS-secured
		u, err := url.ParseRequestURI(coreConfig.ClusterAddr)
		if err != nil {
			c.Ui.Output(fmt.Sprintf("Error parsing cluster address %s: %v", coreConfig.RedirectAddr, err))
			return 1
		}
		u.Scheme = "https"
		coreConfig.ClusterAddr = u.String()
	}

	// Initialize the core
	core, newCoreError := vault.NewCore(coreConfig)
	if newCoreError != nil {
		if !errwrap.ContainsType(newCoreError, new(vault.NonFatalError)) {
			c.Ui.Output(fmt.Sprintf("Error initializing core: %s", newCoreError))
			return 1
		}
	}

	// Copy the reload funcs pointers back
	c.reloadFuncs = coreConfig.ReloadFuncs
	c.reloadFuncsLock = coreConfig.ReloadFuncsLock

	// Compile server information for output later
	info["backend"] = config.Backend.Type
	info["log level"] = logLevel
	info["mlock"] = fmt.Sprintf(
		"supported: %v, enabled: %v",
		mlock.Supported(), !config.DisableMlock && mlock.Supported())
	infoKeys = append(infoKeys, "log level", "mlock", "backend")

	if config.HABackend != nil {
		info["HA backend"] = config.HABackend.Type
		info["redirect address"] = coreConfig.RedirectAddr
		infoKeys = append(infoKeys, "HA backend", "redirect address")
		if coreConfig.ClusterAddr != "" {
			info["cluster address"] = coreConfig.ClusterAddr
			infoKeys = append(infoKeys, "cluster address")
		}
	} else {
		// If the backend supports HA, then note it
		if coreConfig.HAPhysical != nil {
			if coreConfig.HAPhysical.HAEnabled() {
				info["backend"] += " (HA available)"
				info["redirect address"] = coreConfig.RedirectAddr
				infoKeys = append(infoKeys, "redirect address")
				if coreConfig.ClusterAddr != "" {
					info["cluster address"] = coreConfig.ClusterAddr
					infoKeys = append(infoKeys, "cluster address")
				}
			} else {
				info["backend"] += " (HA disabled)"
			}
		}
	}

	clusterAddrs := []*net.TCPAddr{}

	// Initialize the listeners
	c.reloadFuncsLock.Lock()
	lns := make([]net.Listener, 0, len(config.Listeners))
	for i, lnConfig := range config.Listeners {
		if lnConfig.Type == "atlas" {
			if config.ClusterName == "" {
				c.Ui.Output("cluster_name is not set in the config and is a required value")
				return 1
			}

			lnConfig.Config["cluster_name"] = config.ClusterName
		}

		ln, props, reloadFunc, err := server.NewListener(lnConfig.Type, lnConfig.Config, logGate)
		if err != nil {
			c.Ui.Output(fmt.Sprintf(
				"Error initializing listener of type %s: %s",
				lnConfig.Type, err))
			return 1
		}

		lns = append(lns, ln)

		if reloadFunc != nil {
			relSlice := (*c.reloadFuncs)["listener|"+lnConfig.Type]
			relSlice = append(relSlice, reloadFunc)
			(*c.reloadFuncs)["listener|"+lnConfig.Type] = relSlice
		}

		if !disableClustering && lnConfig.Type == "tcp" {
			var addr string
			var ok bool
			if addr, ok = lnConfig.Config["cluster_address"]; ok {
				tcpAddr, err := net.ResolveTCPAddr("tcp", addr)
				if err != nil {
					c.Ui.Output(fmt.Sprintf(
						"Error resolving cluster_address: %s",
						err))
					return 1
				}
				clusterAddrs = append(clusterAddrs, tcpAddr)
			} else {
				tcpAddr, ok := ln.Addr().(*net.TCPAddr)
				if !ok {
					c.Ui.Output("Failed to parse tcp listener")
					return 1
				}
				clusterAddrs = append(clusterAddrs, &net.TCPAddr{
					IP:   tcpAddr.IP,
					Port: tcpAddr.Port + 1,
				})
			}
			props["cluster address"] = addr
		}

		// Store the listener props for output later
		key := fmt.Sprintf("listener %d", i+1)
		propsList := make([]string, 0, len(props))
		for k, v := range props {
			propsList = append(propsList, fmt.Sprintf(
				"%s: %q", k, v))
		}
		sort.Strings(propsList)
		infoKeys = append(infoKeys, key)
		info[key] = fmt.Sprintf(
			"%s (%s)", lnConfig.Type, strings.Join(propsList, ", "))

	}
	c.reloadFuncsLock.Unlock()
	if !disableClustering {
		if c.logger.IsTrace() {
			c.logger.Trace("cluster listener addresses synthesized", "cluster_addresses", clusterAddrs)
		}
	}

	// Make sure we close all listeners from this point on
	listenerCloseFunc := func() {
		for _, ln := range lns {
			ln.Close()
		}
	}

	defer c.cleanupGuard.Do(listenerCloseFunc)

	infoKeys = append(infoKeys, "version")
	verInfo := version.GetVersion()
	info["version"] = verInfo.FullVersionNumber(false)
	if verInfo.Revision != "" {
		info["version sha"] = strings.Trim(verInfo.Revision, "'")
		infoKeys = append(infoKeys, "version sha")
	}
	infoKeys = append(infoKeys, "cgo")
	info["cgo"] = "disabled"
	if version.CgoEnabled {
		info["cgo"] = "enabled"
	}

	// Server configuration output
	padding := 24
	sort.Strings(infoKeys)
	c.Ui.Output("==> Vault server configuration:\n")
	for _, k := range infoKeys {
		c.Ui.Output(fmt.Sprintf(
			"%s%s: %s",
			strings.Repeat(" ", padding-len(k)),
			strings.Title(k),
			info[k]))
	}
	c.Ui.Output("")

	if verifyOnly {
		return 0
	}

	// Perform service discovery registrations and initialization of
	// HTTP server after the verifyOnly check.

	// Instantiate the wait group
	c.WaitGroup = &sync.WaitGroup{}

	// If the backend supports service discovery, run service discovery
	if coreConfig.HAPhysical != nil && coreConfig.HAPhysical.HAEnabled() {
		sd, ok := coreConfig.HAPhysical.(physical.ServiceDiscovery)
		if ok {
			activeFunc := func() bool {
				if isLeader, _, err := core.Leader(); err == nil {
					return isLeader
				}
				return false
			}

			sealedFunc := func() bool {
				if sealed, err := core.Sealed(); err == nil {
					return sealed
				}
				return true
			}

			if err := sd.RunServiceDiscovery(c.WaitGroup, c.ShutdownCh, coreConfig.RedirectAddr, activeFunc, sealedFunc); err != nil {
				c.Ui.Output(fmt.Sprintf("Error initializing service discovery: %v", err))
				return 1
			}
		}
	}

	handler := vaulthttp.Handler(core)

	// This needs to happen before we first unseal, so before we trigger dev
	// mode if it's set
	core.SetClusterListenerAddrs(clusterAddrs)
	core.SetClusterSetupFuncs(vault.WrapHandlerForClustering(handler, c.logger))

	// If we're in dev mode, then initialize the core
	if dev {
		init, err := c.enableDev(core, devRootTokenID)
		if err != nil {
			c.Ui.Output(fmt.Sprintf(
				"Error initializing dev mode: %s", err))
			return 1
		}

		export := "export"
		quote := "'"
		if runtime.GOOS == "windows" {
			export = "set"
			quote = ""
		}

		c.Ui.Output(fmt.Sprintf(
			"==> WARNING: Dev mode is enabled!\n\n"+
				"In this mode, Vault is completely in-memory and unsealed.\n"+
				"Vault is configured to only have a single unseal key. The root\n"+
				"token has already been authenticated with the CLI, so you can\n"+
				"immediately begin using the Vault CLI.\n\n"+
				"The only step you need to take is to set the following\n"+
				"environment variables:\n\n"+
				"    "+export+" VAULT_ADDR="+quote+"http://"+config.Listeners[0].Config["address"]+quote+"\n\n"+
				"The unseal key and root token are reproduced below in case you\n"+
				"want to seal/unseal the Vault or play with authentication.\n\n"+
				"Unseal Key: %s\nRoot Token: %s\n",
			base64.StdEncoding.EncodeToString(init.SecretShares[0]),
			init.RootToken,
		))
	}

	// Initialize the HTTP server
	server := &http.Server{}
	server.Handler = handler
	for _, ln := range lns {
		go server.Serve(ln)
	}

	if newCoreError != nil {
		c.Ui.Output("==> Warning:\n\nNon-fatal error during initialization; check the logs for more information.")
		c.Ui.Output("")
	}

	// Output the header that the server has started
	c.Ui.Output("==> Vault server started! Log data will stream in below:\n")

	// Release the log gate.
	logGate.Flush()

	// Wait for shutdown
	shutdownTriggered := false

	for !shutdownTriggered {
		select {
		case <-c.ShutdownCh:
			c.Ui.Output("==> Vault shutdown triggered")

			// Stop the listners so that we don't process further client requests.
			c.cleanupGuard.Do(listenerCloseFunc)

			// Shutdown will wait until after Vault is sealed, which means the
			// request forwarding listeners will also be closed (and also
			// waited for).
			if err := core.Shutdown(); err != nil {
				c.Ui.Output(fmt.Sprintf("Error with core shutdown: %s", err))
			}

			shutdownTriggered = true

		case <-c.SighupCh:
			c.Ui.Output("==> Vault reload triggered")
			if err := c.Reload(configPath); err != nil {
				c.Ui.Output(fmt.Sprintf("Error(s) were encountered during reload: %s", err))
			}
		}
	}

	// Wait for dependent goroutines to complete
	c.WaitGroup.Wait()
	return 0
}