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open-vault
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open-vault/command/server.go

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package command
import (
"context"
"crypto/sha256"
"encoding/base64"
"encoding/hex"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"net/url"
"os"
"path/filepath"
"runtime"
"sort"
"strconv"
"strings"
"sync"
"time"
"github.com/mitchellh/cli"
testing "github.com/mitchellh/go-testing-interface"
"github.com/posener/complete"
"google.golang.org/grpc/grpclog"
"github.com/armon/go-metrics"
"github.com/armon/go-metrics/circonus"
"github.com/armon/go-metrics/datadog"
"github.com/hashicorp/errwrap"
log "github.com/hashicorp/go-hclog"
"github.com/hashicorp/go-multierror"
sockaddr "github.com/hashicorp/go-sockaddr"
"github.com/hashicorp/vault/audit"
"github.com/hashicorp/vault/command/server"
"github.com/hashicorp/vault/helper/gated-writer"
"github.com/hashicorp/vault/helper/logging"
"github.com/hashicorp/vault/helper/mlock"
"github.com/hashicorp/vault/helper/parseutil"
"github.com/hashicorp/vault/helper/reload"
vaulthttp "github.com/hashicorp/vault/http"
"github.com/hashicorp/vault/logical"
"github.com/hashicorp/vault/physical"
"github.com/hashicorp/vault/vault"
"github.com/hashicorp/vault/version"
)
var _ cli.Command = (*ServerCommand)(nil)
var _ cli.CommandAutocomplete = (*ServerCommand)(nil)
type ServerCommand struct {
*BaseCommand
AuditBackends map[string]audit.Factory
CredentialBackends map[string]logical.Factory
LogicalBackends map[string]logical.Factory
PhysicalBackends map[string]physical.Factory
ShutdownCh chan struct{}
SighupCh chan struct{}
WaitGroup *sync.WaitGroup
logWriter io.Writer
logGate *gatedwriter.Writer
logger log.Logger
cleanupGuard sync.Once
reloadFuncsLock *sync.RWMutex
reloadFuncs *map[string][]reload.ReloadFunc
startedCh chan (struct{}) // for tests
reloadedCh chan (struct{}) // for tests
// new stuff
flagConfigs []string
flagLogLevel string
flagDev bool
flagDevRootTokenID string
flagDevListenAddr string
flagDevPluginDir string
flagDevPluginInit bool
flagDevHA bool
flagDevLatency int
flagDevLatencyJitter int
flagDevLeasedKV bool
flagDevSkipInit bool
flagDevThreeNode bool
flagDevFourCluster bool
flagDevTransactional bool
flagTestVerifyOnly bool
flagCombineLogs bool
}
type ServerListener struct {
net.Listener
config map[string]interface{}
maxRequestSize int64
maxRequestDuration time.Duration
}
func (c *ServerCommand) Synopsis() string {
return "Start a Vault server"
}
func (c *ServerCommand) Help() string {
helpText := `
Usage: vault server [options]
This command starts a Vault server that responds to API requests. By default,
Vault will start in a "sealed" state. The Vault cluster must be initialized
before use, usually by the "vault operator init" command. Each Vault server must
also be unsealed using the "vault operator unseal" command or the API before the
server can respond to requests.
Start a server with a configuration file:
$ vault server -config=/etc/vault/config.hcl
Run in "dev" mode:
$ vault server -dev -dev-root-token-id="root"
For a full list of examples, please see the documentation.
` + c.Flags().Help()
return strings.TrimSpace(helpText)
}
func (c *ServerCommand) Flags() *FlagSets {
set := c.flagSet(FlagSetHTTP)
f := set.NewFlagSet("Command Options")
f.StringSliceVar(&StringSliceVar{
Name: "config",
Target: &c.flagConfigs,
Completion: complete.PredictOr(
complete.PredictFiles("*.hcl"),
complete.PredictFiles("*.json"),
complete.PredictDirs("*"),
),
Usage: "Path to a configuration file or directory of configuration " +
"files. This flag can be specified multiple times to load multiple " +
"configurations. If the path is a directory, all files which end in " +
".hcl or .json are loaded.",
})
f.StringVar(&StringVar{
Name: "log-level",
Target: &c.flagLogLevel,
Default: "info",
EnvVar: "VAULT_LOG_LEVEL",
Completion: complete.PredictSet("trace", "debug", "info", "warn", "err"),
Usage: "Log verbosity level. Supported values (in order of detail) are " +
"\"trace\", \"debug\", \"info\", \"warn\", and \"err\".",
})
f = set.NewFlagSet("Dev Options")
f.BoolVar(&BoolVar{
Name: "dev",
Target: &c.flagDev,
Usage: "Enable development mode. In this mode, Vault runs in-memory and " +
"starts unsealed. As the name implies, do not run \"dev\" mode in " +
"production.",
})
f.StringVar(&StringVar{
Name: "dev-root-token-id",
Target: &c.flagDevRootTokenID,
Default: "",
EnvVar: "VAULT_DEV_ROOT_TOKEN_ID",
Usage: "Initial root token. This only applies when running in \"dev\" " +
"mode.",
})
f.StringVar(&StringVar{
Name: "dev-listen-address",
Target: &c.flagDevListenAddr,
Default: "127.0.0.1:8200",
EnvVar: "VAULT_DEV_LISTEN_ADDRESS",
Usage: "Address to bind to in \"dev\" mode.",
})
// Internal-only flags to follow.
//
// Why hello there little source code reader! Welcome to the Vault source
// code. The remaining options are intentionally undocumented and come with
// no warranty or backwards-compatability promise. Do not use these flags
// in production. Do not build automation using these flags. Unless you are
// developing against Vault, you should not need any of these flags.
f.StringVar(&StringVar{
Name: "dev-plugin-dir",
Target: &c.flagDevPluginDir,
Default: "",
Completion: complete.PredictDirs("*"),
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-plugin-init",
Target: &c.flagDevPluginInit,
Default: true,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-ha",
Target: &c.flagDevHA,
Default: false,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-transactional",
Target: &c.flagDevTransactional,
Default: false,
Hidden: true,
})
f.IntVar(&IntVar{
Name: "dev-latency",
Target: &c.flagDevLatency,
Hidden: true,
})
f.IntVar(&IntVar{
Name: "dev-latency-jitter",
Target: &c.flagDevLatencyJitter,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-leased-kv",
Target: &c.flagDevLeasedKV,
Default: false,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-skip-init",
Target: &c.flagDevSkipInit,
Default: false,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-three-node",
Target: &c.flagDevThreeNode,
Default: false,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "dev-four-cluster",
Target: &c.flagDevFourCluster,
Default: false,
Hidden: true,
})
// TODO: should the below flags be public?
f.BoolVar(&BoolVar{
Name: "combine-logs",
Target: &c.flagCombineLogs,
Default: false,
Hidden: true,
})
f.BoolVar(&BoolVar{
Name: "test-verify-only",
Target: &c.flagTestVerifyOnly,
Default: false,
Hidden: true,
})
// End internal-only flags.
return set
}
func (c *ServerCommand) AutocompleteArgs() complete.Predictor {
return complete.PredictNothing
}
func (c *ServerCommand) AutocompleteFlags() complete.Flags {
return c.Flags().Completions()
}
func (c *ServerCommand) Run(args []string) int {
f := c.Flags()
if err := f.Parse(args); err != nil {
c.UI.Error(err.Error())
return 1
}
// Create a logger. We wrap it in a gated writer so that it doesn't
// start logging too early.
c.logGate = &gatedwriter.Writer{Writer: os.Stderr}
c.logWriter = c.logGate
if c.flagCombineLogs {
c.logWriter = os.Stdout
}
var level log.Level
c.flagLogLevel = strings.ToLower(strings.TrimSpace(c.flagLogLevel))
switch c.flagLogLevel {
case "trace":
level = log.Trace
case "debug":
level = log.Debug
case "notice", "info", "":
level = log.Info
case "warn", "warning":
level = log.Warn
case "err", "error":
level = log.Error
default:
c.UI.Error(fmt.Sprintf("Unknown log level: %s", c.flagLogLevel))
return 1
}
if c.flagDevThreeNode || c.flagDevFourCluster {
c.logger = log.New(&log.LoggerOptions{
Mutex: &sync.Mutex{},
Output: c.logWriter,
Level: log.Trace,
})
} else {
c.logger = logging.NewVaultLoggerWithWriter(c.logWriter, level)
}
grpclog.SetLogger(&grpclogFaker{
logger: c.logger.Named("grpclogfaker"),
log: os.Getenv("VAULT_GRPC_LOGGING") != "",
})
// Automatically enable dev mode if other dev flags are provided.
if c.flagDevHA || c.flagDevTransactional || c.flagDevLeasedKV || c.flagDevThreeNode || c.flagDevFourCluster {
c.flagDev = true
}
// Validation
if !c.flagDev {
switch {
case len(c.flagConfigs) == 0:
c.UI.Error("Must specify at least one config path using -config")
return 1
case c.flagDevRootTokenID != "":
c.UI.Warn(wrapAtLength(
"You cannot specify a custom root token ID outside of \"dev\" mode. " +
"Your request has been ignored."))
c.flagDevRootTokenID = ""
}
}
// Load the configuration
var config *server.Config
if c.flagDev {
config = server.DevConfig(c.flagDevHA, c.flagDevTransactional)
if c.flagDevListenAddr != "" {
config.Listeners[0].Config["address"] = c.flagDevListenAddr
}
}
for _, path := range c.flagConfigs {
current, err := server.LoadConfig(path, c.logger)
if err != nil {
c.UI.Error(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(wrapAtLength(
"No configuration files found. Please provide configurations with the " +
"-config flag. If you are supply the path to a directory, please " +
"ensure the directory contains files with the .hcl or .json " +
"extension."))
return 1
}
// Ensure that a backend is provided
if config.Storage == nil {
c.UI.Output("A storage backend must be specified")
return 1
}
if config.DefaultMaxRequestDuration != 0 {
vault.DefaultMaxRequestDuration = config.DefaultMaxRequestDuration
}
// 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. We also disable
// this if the user has explicitly disabled mlock in configuration.
if !c.flagDev && !config.DisableMlock && !mlock.Supported() {
c.UI.Warn(wrapAtLength(
"WARNING! mlock is not supported on this system! An mlockall(2)-like " +
"syscall to prevent memory from being swapped to disk is not " +
"supported on this system. For better security, only run Vault on " +
"systems where this call is supported. If you are running Vault " +
"in a Docker container, provide the IPC_LOCK cap to the container."))
}
if err := c.setupTelemetry(config); err != nil {
c.UI.Error(fmt.Sprintf("Error initializing telemetry: %s", err))
return 1
}
// Initialize the backend
factory, exists := c.PhysicalBackends[config.Storage.Type]
if !exists {
c.UI.Error(fmt.Sprintf("Unknown storage type %s", config.Storage.Type))
return 1
}
backend, err := factory(config.Storage.Config, c.logger.Named("storage."+config.Storage.Type))
if err != nil {
c.UI.Error(fmt.Sprintf("Error initializing storage of type %s: %s", config.Storage.Type, err))
return 1
}
infoKeys := make([]string, 0, 10)
info := make(map[string]string)
info["log level"] = c.flagLogLevel
infoKeys = append(infoKeys, "log level")
var seal vault.Seal = vault.NewDefaultSeal()
// Ensure that the seal finalizer is called, even if using verify-only
defer func() {
if seal != nil {
err = seal.Finalize(context.Background())
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! Most likely proper Seal configuration information was not set, but no error was generated."))
return 1
}
coreConfig := &vault.CoreConfig{
Physical: backend,
RedirectAddr: config.Storage.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,
PluginDirectory: config.PluginDirectory,
EnableUI: config.EnableUI,
EnableRaw: config.EnableRawEndpoint,
}
if c.flagDev {
coreConfig.DevToken = c.flagDevRootTokenID
if c.flagDevLeasedKV {
coreConfig.LogicalBackends["kv"] = vault.LeasedPassthroughBackendFactory
}
if c.flagDevPluginDir != "" {
coreConfig.PluginDirectory = c.flagDevPluginDir
}
if c.flagDevLatency > 0 {
injectLatency := time.Duration(c.flagDevLatency) * time.Millisecond
if _, txnOK := backend.(physical.Transactional); txnOK {
coreConfig.Physical = physical.NewTransactionalLatencyInjector(backend, injectLatency, c.flagDevLatencyJitter, c.logger)
} else {
coreConfig.Physical = physical.NewLatencyInjector(backend, injectLatency, c.flagDevLatencyJitter, c.logger)
}
}
}
if c.flagDevThreeNode {
return c.enableThreeNodeDevCluster(coreConfig, info, infoKeys, c.flagDevListenAddr, os.Getenv("VAULT_DEV_TEMP_DIR"))
}
var disableClustering bool
// Initialize the separate HA storage backend, if it exists
var ok bool
if config.HAStorage != nil {
factory, exists := c.PhysicalBackends[config.HAStorage.Type]
if !exists {
c.UI.Error(fmt.Sprintf("Unknown HA storage type %s", config.HAStorage.Type))
return 1
}
habackend, err := factory(config.HAStorage.Config, c.logger)
if err != nil {
c.UI.Error(fmt.Sprintf(
"Error initializing HA storage of type %s: %s", config.HAStorage.Type, err))
return 1
}
if coreConfig.HAPhysical, ok = habackend.(physical.HABackend); !ok {
c.UI.Error("Specified HA storage does not support HA")
return 1
}
if !coreConfig.HAPhysical.HAEnabled() {
c.UI.Error("Specified HA storage has HA support disabled; please consult documentation")
return 1
}
coreConfig.RedirectAddr = config.HAStorage.RedirectAddr
disableClustering = config.HAStorage.DisableClustering
if !disableClustering {
coreConfig.ClusterAddr = config.HAStorage.ClusterAddr
}
} else {
if coreConfig.HAPhysical, ok = backend.(physical.HABackend); ok {
coreConfig.RedirectAddr = config.Storage.RedirectAddr
disableClustering = config.Storage.DisableClustering
if !disableClustering {
coreConfig.ClusterAddr = config.Storage.ClusterAddr
}
}
}
if envRA := os.Getenv("VAULT_API_ADDR"); envRA != "" {
coreConfig.RedirectAddr = envRA
} else 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.Error(fmt.Sprintf("Error detecting api address: %s", err))
} else if redirect == "" {
c.UI.Error("Failed to detect api address")
} else {
coreConfig.RedirectAddr = redirect
}
}
if coreConfig.RedirectAddr == "" && c.flagDev {
coreConfig.RedirectAddr = fmt.Sprintf("http://%s", config.Listeners[0].Config["address"])
}
// 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 {
var addrToUse string
switch {
case coreConfig.ClusterAddr == "" && coreConfig.RedirectAddr != "":
addrToUse = coreConfig.RedirectAddr
case c.flagDev:
addrToUse = fmt.Sprintf("http://%s", config.Listeners[0].Config["address"])
default:
goto CLUSTER_SYNTHESIS_COMPLETE
}
u, err := url.ParseRequestURI(addrToUse)
if err != nil {
c.UI.Error(fmt.Sprintf(
"Error parsing synthesized cluster address %s: %v", addrToUse, err))
return 1
}
host, port, err := net.SplitHostPort(u.Host)
if err != nil {
// This sucks, as it's a const in the function but not exported in the package
if strings.Contains(err.Error(), "missing port in address") {
host = u.Host
port = "443"
} else {
c.UI.Error(fmt.Sprintf("Error parsing api address: %v", err))
return 1
}
}
nPort, err := strconv.Atoi(port)
if err != nil {
c.UI.Error(fmt.Sprintf(
"Error parsing synthesized address; failed to convert %q to a numeric: %v", port, err))
return 1
}
u.Host = net.JoinHostPort(host, strconv.Itoa(nPort+1))
// Will always be TLS-secured
u.Scheme = "https"
coreConfig.ClusterAddr = u.String()
}
CLUSTER_SYNTHESIS_COMPLETE:
if coreConfig.RedirectAddr == coreConfig.ClusterAddr && len(coreConfig.RedirectAddr) != 0 {
c.UI.Error(fmt.Sprintf(
"Address %q used for both API and cluster addresses", coreConfig.RedirectAddr))
return 1
}
if coreConfig.ClusterAddr != "" {
// Force https as we'll always be TLS-secured
u, err := url.ParseRequestURI(coreConfig.ClusterAddr)
if err != nil {
c.UI.Error(fmt.Sprintf("Error parsing cluster address %s: %v", coreConfig.ClusterAddr, err))
return 11
}
u.Scheme = "https"
coreConfig.ClusterAddr = u.String()
}
// Override the UI enabling config by the environment variable
if enableUI := os.Getenv("VAULT_UI"); enableUI != "" {
var err error
coreConfig.EnableUI, err = strconv.ParseBool(enableUI)
if err != nil {
c.UI.Output("Error parsing the environment variable VAULT_UI")
return 1
}
}
// Initialize the core
core, newCoreError := vault.NewCore(coreConfig)
if newCoreError != nil {
if !errwrap.ContainsType(newCoreError, new(vault.NonFatalError)) {
c.UI.Error(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["storage"] = config.Storage.Type
info["log level"] = c.flagLogLevel
info["mlock"] = fmt.Sprintf(
"supported: %v, enabled: %v",
mlock.Supported(), !config.DisableMlock && mlock.Supported())
infoKeys = append(infoKeys, "mlock", "storage")
if coreConfig.ClusterAddr != "" {
info["cluster address"] = coreConfig.ClusterAddr
infoKeys = append(infoKeys, "cluster address")
}
if coreConfig.RedirectAddr != "" {
info["api address"] = coreConfig.RedirectAddr
infoKeys = append(infoKeys, "api address")
}
if config.HAStorage != nil {
info["HA storage"] = config.HAStorage.Type
infoKeys = append(infoKeys, "HA storage")
} else {
// If the storage supports HA, then note it
if coreConfig.HAPhysical != nil {
if coreConfig.HAPhysical.HAEnabled() {
info["storage"] += " (HA available)"
} else {
info["storage"] += " (HA disabled)"
}
}
}
clusterAddrs := []*net.TCPAddr{}
// Initialize the listeners
lns := make([]ServerListener, 0, len(config.Listeners))
c.reloadFuncsLock.Lock()
for i, lnConfig := range config.Listeners {
ln, props, reloadFunc, err := server.NewListener(lnConfig.Type, lnConfig.Config, c.logWriter, c.UI)
if err != nil {
c.UI.Error(fmt.Sprintf("Error initializing listener of type %s: %s", lnConfig.Type, err))
return 1
}
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 addrRaw interface{}
var addr string
var ok bool
if addrRaw, ok = lnConfig.Config["cluster_address"]; ok {
addr = addrRaw.(string)
tcpAddr, err := net.ResolveTCPAddr("tcp", addr)
if err != nil {
c.UI.Error(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.Error("Failed to parse tcp listener")
return 1
}
clusterAddr := &net.TCPAddr{
IP: tcpAddr.IP,
Port: tcpAddr.Port + 1,
}
clusterAddrs = append(clusterAddrs, clusterAddr)
addr = clusterAddr.String()
}
props["cluster address"] = addr
}
var maxRequestSize int64 = vaulthttp.DefaultMaxRequestSize
if valRaw, ok := lnConfig.Config["max_request_size"]; ok {
val, err := parseutil.ParseInt(valRaw)
if err != nil {
c.UI.Error(fmt.Sprintf("Could not parse max_request_size value %v", valRaw))
return 1
}
if val >= 0 {
maxRequestSize = val
}
}
props["max_request_size"] = fmt.Sprintf("%d", maxRequestSize)
var maxRequestDuration time.Duration = vault.DefaultMaxRequestDuration
if valRaw, ok := lnConfig.Config["max_request_duration"]; ok {
val, err := parseutil.ParseDurationSecond(valRaw)
if err != nil {
c.UI.Error(fmt.Sprintf("Could not parse max_request_duration value %v", valRaw))
return 1
}
if val >= 0 {
maxRequestDuration = val
}
}
props["max_request_duration"] = fmt.Sprintf("%s", maxRequestDuration.String())
lns = append(lns, ServerListener{
Listener: ln,
config: lnConfig.Config,
maxRequestSize: maxRequestSize,
maxRequestDuration: maxRequestDuration,
})
// 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.IsDebug() {
c.logger.Debug("cluster listener addresses synthesized", "cluster_addresses", clusterAddrs)
}
}
// Make sure we close all listeners from this point on
listenerCloseFunc := func() {
for _, ln := range lns {
ln.Listener.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("")
// Tests might not want to start a vault server and just want to verify
// the configuration.
if c.flagTestVerifyOnly {
return 0
}
// This needs to happen before we first unseal, so before we trigger dev
// mode if it's set
core.SetClusterListenerAddrs(clusterAddrs)
core.SetClusterHandler(vaulthttp.Handler(&vault.HandlerProperties{
Core: core,
}))
err = core.UnsealWithStoredKeys(context.Background())
if err != nil {
if !errwrap.ContainsType(err, new(vault.NonFatalError)) {
c.UI.Error(fmt.Sprintf("Error initializing core: %s", err))
return 1
}
}
// 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
}
if err := sd.RunServiceDiscovery(c.WaitGroup, c.ShutdownCh, coreConfig.RedirectAddr, activeFunc, core.Sealed); err != nil {
c.UI.Error(fmt.Sprintf("Error initializing service discovery: %v", err))
return 1
}
}
}
// If we're in Dev mode, then initialize the core
if c.flagDev && !c.flagDevSkipInit {
init, err := c.enableDev(core, coreConfig)
if err != nil {
c.UI.Error(fmt.Sprintf("Error initializing Dev mode: %s", err))
return 1
}
var plugins []string
if c.flagDevPluginDir != "" && c.flagDevPluginInit {
f, err := os.Open(c.flagDevPluginDir)
if err != nil {
c.UI.Error(fmt.Sprintf("Error reading plugin dir: %s", err))
return 1
}
list, err := f.Readdirnames(0)
f.Close()
if err != nil {
c.UI.Error(fmt.Sprintf("Error listing plugins: %s", err))
return 1
}
for _, name := range list {
path := filepath.Join(f.Name(), name)
if err := c.addPlugin(path, init.RootToken, core); err != nil {
c.UI.Error(fmt.Sprintf("Error enabling plugin %s: %s", name, err))
return 1
}
plugins = append(plugins, name)
}
sort.Strings(plugins)
}
export := "export"
quote := "'"
if runtime.GOOS == "windows" {
export = "set"
quote = ""
}
// Print the big dev mode warning!
c.UI.Warn(wrapAtLength(
"WARNING! dev mode is enabled! In this mode, Vault runs entirely " +
"in-memory and starts unsealed with a single unseal key. The root " +
"token is already authenticated to the CLI, so you can immediately " +
"begin using Vault."))
c.UI.Warn("")
c.UI.Warn("You may need to set the following environment variable:")
c.UI.Warn("")
c.UI.Warn(fmt.Sprintf(" $ %s VAULT_ADDR=%s%s%s",
export, quote, "http://"+config.Listeners[0].Config["address"].(string), quote))
// Unseal key is not returned if stored shares is supported
if len(init.SecretShares) > 0 {
c.UI.Warn("")
c.UI.Warn(wrapAtLength(
"The unseal key and root token are displayed below in case you want " +
"to seal/unseal the Vault or re-authenticate."))
c.UI.Warn("")
c.UI.Warn(fmt.Sprintf("Unseal Key: %s", base64.StdEncoding.EncodeToString(init.SecretShares[0])))
}
if len(init.RecoveryShares) > 0 {
c.UI.Warn("")
c.UI.Warn(wrapAtLength(
"The recovery key and root token are displayed below in case you want " +
"to seal/unseal the Vault or re-authenticate."))
c.UI.Warn("")
c.UI.Warn(fmt.Sprintf("Unseal Key: %s", base64.StdEncoding.EncodeToString(init.RecoveryShares[0])))
}
c.UI.Warn(fmt.Sprintf("Root Token: %s", init.RootToken))
if len(plugins) > 0 {
c.UI.Warn("")
c.UI.Warn(wrapAtLength(
"The following dev plugins are registered in the catalog:"))
for _, p := range plugins {
c.UI.Warn(fmt.Sprintf(" - %s", p))
}
}
c.UI.Warn("")
c.UI.Warn(wrapAtLength(
"Development mode should NOT be used in production installations!"))
c.UI.Warn("")
}
// Initialize the HTTP servers
for _, ln := range lns {
handler := vaulthttp.Handler(&vault.HandlerProperties{
Core: core,
MaxRequestSize: ln.maxRequestSize,
MaxRequestDuration: ln.maxRequestDuration,
DisablePrintableCheck: config.DisablePrintableCheck,
})
// We perform validation on the config earlier, we can just cast here
if _, ok := ln.config["x_forwarded_for_authorized_addrs"]; ok {
hopSkips := ln.config["x_forwarded_for_hop_skips"].(int)
authzdAddrs := ln.config["x_forwarded_for_authorized_addrs"].([]*sockaddr.SockAddrMarshaler)
rejectNotPresent := ln.config["x_forwarded_for_reject_not_present"].(bool)
rejectNonAuthz := ln.config["x_forwarded_for_reject_not_authorized"].(bool)
if len(authzdAddrs) > 0 {
handler = vaulthttp.WrapForwardedForHandler(handler, authzdAddrs, rejectNotPresent, rejectNonAuthz, hopSkips)
}
}
server := &http.Server{
Handler: handler,
ReadHeaderTimeout: 10 * time.Second,
ReadTimeout: 30 * time.Second,
IdleTimeout: 5 * time.Minute,
ErrorLog: c.logger.StandardLogger(nil),
}
go server.Serve(ln.Listener)
}
if newCoreError != nil {
c.UI.Warn(wrapAtLength(
"WARNING! A non-fatal error occurred during initialization. Please " +
"check the logs for more information."))
c.UI.Warn("")
}
// Output the header that the server has started
if !c.flagCombineLogs {
c.UI.Output("==> Vault server started! Log data will stream in below:\n")
}
// Inform any tests that the server is ready
select {
case c.startedCh <- struct{}{}:
default:
}
// Release the log gate.
c.logGate.Flush()
// Write out the PID to the file now that server has successfully started
if err := c.storePidFile(config.PidFile); err != nil {
c.UI.Error(fmt.Sprintf("Error storing PID: %s", err))
return 1
}
defer func() {
if err := c.removePidFile(config.PidFile); err != nil {
c.UI.Error(fmt.Sprintf("Error deleting the PID file: %s", err))
}
}()
// Wait for shutdown
shutdownTriggered := false
for !shutdownTriggered {
select {
case <-c.ShutdownCh:
c.UI.Output("==> Vault shutdown triggered")
// Stop the listeners 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.Error(fmt.Sprintf("Error with core shutdown: %s", err))
}
shutdownTriggered = true
case <-c.SighupCh:
c.UI.Output("==> Vault reload triggered")
if err := c.Reload(c.reloadFuncsLock, c.reloadFuncs, c.flagConfigs); err != nil {
c.UI.Error(fmt.Sprintf("Error(s) were encountered during reload: %s", err))
}
}
}
// Wait for dependent goroutines to complete
c.WaitGroup.Wait()
return 0
}
func (c *ServerCommand) enableDev(core *vault.Core, coreConfig *vault.CoreConfig) (*vault.InitResult, error) {
var recoveryConfig *vault.SealConfig
barrierConfig := &vault.SealConfig{
SecretShares: 1,
SecretThreshold: 1,
}
if core.SealAccess().RecoveryKeySupported() {
recoveryConfig = &vault.SealConfig{
SecretShares: 1,
SecretThreshold: 1,
}
}
if core.SealAccess().StoredKeysSupported() {
barrierConfig.StoredShares = 1
}
ctx := context.Background()
// Initialize it with a basic single key
init, err := core.Initialize(ctx, &vault.InitParams{
BarrierConfig: barrierConfig,
RecoveryConfig: recoveryConfig,
})
if err != nil {
return nil, err
}
// Handle unseal with stored keys
if core.SealAccess().StoredKeysSupported() {
err := core.UnsealWithStoredKeys(ctx)
if err != nil {
return nil, err
}
} else {
// Copy the key so that it can be zeroed
key := make([]byte, len(init.SecretShares[0]))
copy(key, init.SecretShares[0])
// Unseal the core
unsealed, err := core.Unseal(key)
if err != nil {
return nil, err
}
if !unsealed {
return nil, fmt.Errorf("failed to unseal Vault for dev mode")
}
}
isLeader, _, _, err := core.Leader()
if err != nil && err != vault.ErrHANotEnabled {
return nil, errwrap.Wrapf("failed to check active status: {{err}}", err)
}
if err == nil {
leaderCount := 5
for !isLeader {
if leaderCount == 0 {
buf := make([]byte, 1<<16)
runtime.Stack(buf, true)
return nil, fmt.Errorf("failed to get active status after five seconds; call stack is\n%s\n", buf)
}
time.Sleep(1 * time.Second)
isLeader, _, _, err = core.Leader()
if err != nil {
return nil, errwrap.Wrapf("failed to check active status: {{err}}", err)
}
leaderCount--
}
}
// Generate a dev root token if one is provided in the flag
if coreConfig.DevToken != "" {
req := &logical.Request{
ID: "dev-gen-root",
Operation: logical.UpdateOperation,
ClientToken: init.RootToken,
Path: "auth/token/create",
Data: map[string]interface{}{
"id": coreConfig.DevToken,
"policies": []string{"root"},
"no_parent": true,
"no_default_policy": true,
},
}
resp, err := core.HandleRequest(context.Background(), req)
if err != nil {
return nil, errwrap.Wrapf(fmt.Sprintf("failed to create root token with ID %q: {{err}}", coreConfig.DevToken), err)
}
if resp == nil {
return nil, fmt.Errorf("nil response when creating root token with ID %q", coreConfig.DevToken)
}
if resp.Auth == nil {
return nil, fmt.Errorf("nil auth when creating root token with ID %q", coreConfig.DevToken)
}
init.RootToken = resp.Auth.ClientToken
req.ID = "dev-revoke-init-root"
req.Path = "auth/token/revoke-self"
req.Data = nil
resp, err = core.HandleRequest(context.Background(), req)
if err != nil {
return nil, errwrap.Wrapf("failed to revoke initial root token: {{err}}", err)
}
}
// Set the token
tokenHelper, err := c.TokenHelper()
if err != nil {
return nil, err
}
if err := tokenHelper.Store(init.RootToken); err != nil {
return nil, err
}
// Upgrade the default K/V store
if !c.flagDevLeasedKV {
req := &logical.Request{
Operation: logical.UpdateOperation,
ClientToken: init.RootToken,
Path: "sys/mounts/secret/tune",
Data: map[string]interface{}{
"options": map[string]string{
"version": "2",
},
},
}
resp, err := core.HandleRequest(context.Background(), req)
if err != nil {
return nil, errwrap.Wrapf("error upgrading default K/V store: {{err}}", err)
}
if resp.IsError() {
return nil, errwrap.Wrapf("failed to upgrade default K/V store: {{err}}", resp.Error())
}
}
return init, nil
}
func (c *ServerCommand) enableThreeNodeDevCluster(base *vault.CoreConfig, info map[string]string, infoKeys []string, devListenAddress, tempDir string) int {
testCluster := vault.NewTestCluster(&testing.RuntimeT{}, base, &vault.TestClusterOptions{
HandlerFunc: vaulthttp.Handler,
BaseListenAddress: c.flagDevListenAddr,
Logger: c.logger,
TempDir: tempDir,
})
defer c.cleanupGuard.Do(testCluster.Cleanup)
info["cluster parameters path"] = testCluster.TempDir
infoKeys = append(infoKeys, "cluster parameters path")
for i, core := range testCluster.Cores {
info[fmt.Sprintf("node %d api address", i)] = fmt.Sprintf("https://%s", core.Listeners[0].Address.String())
infoKeys = append(infoKeys, fmt.Sprintf("node %d api address", i))
}
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("")
for _, core := range testCluster.Cores {
core.Server.Handler = vaulthttp.Handler(&vault.HandlerProperties{
Core: core.Core,
})
core.SetClusterHandler(core.Server.Handler)
}
testCluster.Start()
if base.DevToken != "" {
req := &logical.Request{
ID: "dev-gen-root",
Operation: logical.UpdateOperation,
ClientToken: testCluster.RootToken,
Path: "auth/token/create",
Data: map[string]interface{}{
"id": base.DevToken,
"policies": []string{"root"},
"no_parent": true,
"no_default_policy": true,
},
}
resp, err := testCluster.Cores[0].HandleRequest(context.Background(), req)
if err != nil {
c.UI.Error(fmt.Sprintf("failed to create root token with ID %s: %s", base.DevToken, err))
return 1
}
if resp == nil {
c.UI.Error(fmt.Sprintf("nil response when creating root token with ID %s", base.DevToken))
return 1
}
if resp.Auth == nil {
c.UI.Error(fmt.Sprintf("nil auth when creating root token with ID %s", base.DevToken))
return 1
}
testCluster.RootToken = resp.Auth.ClientToken
req.ID = "dev-revoke-init-root"
req.Path = "auth/token/revoke-self"
req.Data = nil
resp, err = testCluster.Cores[0].HandleRequest(context.Background(), req)
if err != nil {
c.UI.Output(fmt.Sprintf("failed to revoke initial root token: %s", err))
return 1
}
}
// Set the token
tokenHelper, err := c.TokenHelper()
if err != nil {
c.UI.Error(fmt.Sprintf("Error getting token helper: %s", err))
return 1
}
if err := tokenHelper.Store(testCluster.RootToken); err != nil {
c.UI.Error(fmt.Sprintf("Error storing in token helper: %s", err))
return 1
}
if err := ioutil.WriteFile(filepath.Join(testCluster.TempDir, "root_token"), []byte(testCluster.RootToken), 0755); err != nil {
c.UI.Error(fmt.Sprintf("Error writing token to tempfile: %s", err))
return 1
}
c.UI.Output(fmt.Sprintf(
"==> Three node dev mode is enabled\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",
))
for i, key := range testCluster.BarrierKeys {
c.UI.Output(fmt.Sprintf(
"Unseal Key %d: %s",
i+1, base64.StdEncoding.EncodeToString(key),
))
}
c.UI.Output(fmt.Sprintf(
"\nRoot Token: %s\n", testCluster.RootToken,
))
c.UI.Output(fmt.Sprintf(
"\nUseful env vars:\n"+
"VAULT_TOKEN=%s\n"+
"VAULT_ADDR=%s\n"+
"VAULT_CACERT=%s/ca_cert.pem\n",
testCluster.RootToken,
testCluster.Cores[0].Client.Address(),
testCluster.TempDir,
))
// Output the header that the server has started
c.UI.Output("==> Vault server started! Log data will stream in below:\n")
// Inform any tests that the server is ready
select {
case c.startedCh <- struct{}{}:
default:
}
// Release the log gate.
c.logGate.Flush()
// Wait for shutdown
shutdownTriggered := false
for !shutdownTriggered {
select {
case <-c.ShutdownCh:
c.UI.Output("==> Vault shutdown triggered")
// Stop the listeners so that we don't process further client requests.
c.cleanupGuard.Do(testCluster.Cleanup)
// Shutdown will wait until after Vault is sealed, which means the
// request forwarding listeners will also be closed (and also
// waited for).
for _, core := range testCluster.Cores {
if err := core.Shutdown(); err != nil {
c.UI.Error(fmt.Sprintf("Error with core shutdown: %s", err))
}
}
shutdownTriggered = true
case <-c.SighupCh:
c.UI.Output("==> Vault reload triggered")
for _, core := range testCluster.Cores {
if err := c.Reload(core.ReloadFuncsLock, core.ReloadFuncs, nil); err != nil {
c.UI.Error(fmt.Sprintf("Error(s) were encountered during reload: %s", err))
}
}
}
}
return 0
}
// addPlugin adds any plugins to the catalog
func (c *ServerCommand) addPlugin(path, token string, core *vault.Core) error {
// Get the sha256 of the file at the given path.
pluginSum := func(p string) (string, error) {
hasher := sha256.New()
f, err := os.Open(p)
if err != nil {
return "", err
}
defer f.Close()
if _, err := io.Copy(hasher, f); err != nil {
return "", err
}
return hex.EncodeToString(hasher.Sum(nil)), nil
}
// Mount any test plugins. We do this explicitly before we inform tests of
// a completely booted server intentionally.
sha256sum, err := pluginSum(path)
if err != nil {
return err
}
// Default the name to the basename of the binary
name := filepath.Base(path)
// File a request against core to enable the plugin
req := &logical.Request{
Operation: logical.UpdateOperation,
ClientToken: token,
Path: "sys/plugins/catalog/" + name,
Data: map[string]interface{}{
"sha256": sha256sum,
"command": name,
},
}
if _, err := core.HandleRequest(context.Background(), req); err != nil {
return err
}
return nil
}
// detectRedirect is used to attempt redirect address detection
func (c *ServerCommand) detectRedirect(detect physical.RedirectDetect,
config *server.Config) (string, error) {
// Get the hostname
host, err := detect.DetectHostAddr()
if err != nil {
return "", err
}
// set [] for ipv6 addresses
if strings.Contains(host, ":") && !strings.Contains(host, "]") {
host = "[" + host + "]"
}
// Default the port and scheme
scheme := "https"
port := 8200
// Attempt to detect overrides
for _, list := range config.Listeners {
// Only attempt TCP
if list.Type != "tcp" {
continue
}
// Check if TLS is disabled
if val, ok := list.Config["tls_disable"]; ok {
disable, err := parseutil.ParseBool(val)
if err != nil {
return "", errwrap.Wrapf("tls_disable: {{err}}", err)
}
if disable {
scheme = "http"
}
}
// Check for address override
var addr string
addrRaw, ok := list.Config["address"]
if !ok {
addr = "127.0.0.1:8200"
} else {
addr = addrRaw.(string)
}
// Check for localhost
hostStr, portStr, err := net.SplitHostPort(addr)
if err != nil {
continue
}
if hostStr == "127.0.0.1" {
host = hostStr
}
// Check for custom port
listPort, err := strconv.Atoi(portStr)
if err != nil {
continue
}
port = listPort
}
// Build a URL
url := &url.URL{
Scheme: scheme,
Host: fmt.Sprintf("%s:%d", host, port),
}
// Return the URL string
return url.String(), nil
}
// setupTelemetry is used to setup the telemetry sub-systems
func (c *ServerCommand) setupTelemetry(config *server.Config) error {
/* Setup telemetry
Aggregate on 10 second intervals for 1 minute. Expose the
metrics over stderr when there is a SIGUSR1 received.
*/
inm := metrics.NewInmemSink(10*time.Second, time.Minute)
metrics.DefaultInmemSignal(inm)
var telConfig *server.Telemetry
if config.Telemetry == nil {
telConfig = &server.Telemetry{}
} else {
telConfig = config.Telemetry
}
metricsConf := metrics.DefaultConfig("vault")
metricsConf.EnableHostname = !telConfig.DisableHostname
// Configure the statsite sink
var fanout metrics.FanoutSink
if telConfig.StatsiteAddr != "" {
sink, err := metrics.NewStatsiteSink(telConfig.StatsiteAddr)
if err != nil {
return err
}
fanout = append(fanout, sink)
}
// Configure the statsd sink
if telConfig.StatsdAddr != "" {
sink, err := metrics.NewStatsdSink(telConfig.StatsdAddr)
if err != nil {
return err
}
fanout = append(fanout, sink)
}
// Configure the Circonus sink
if telConfig.CirconusAPIToken != "" || telConfig.CirconusCheckSubmissionURL != "" {
cfg := &circonus.Config{}
cfg.Interval = telConfig.CirconusSubmissionInterval
cfg.CheckManager.API.TokenKey = telConfig.CirconusAPIToken
cfg.CheckManager.API.TokenApp = telConfig.CirconusAPIApp
cfg.CheckManager.API.URL = telConfig.CirconusAPIURL
cfg.CheckManager.Check.SubmissionURL = telConfig.CirconusCheckSubmissionURL
cfg.CheckManager.Check.ID = telConfig.CirconusCheckID
cfg.CheckManager.Check.ForceMetricActivation = telConfig.CirconusCheckForceMetricActivation
cfg.CheckManager.Check.InstanceID = telConfig.CirconusCheckInstanceID
cfg.CheckManager.Check.SearchTag = telConfig.CirconusCheckSearchTag
cfg.CheckManager.Check.DisplayName = telConfig.CirconusCheckDisplayName
cfg.CheckManager.Check.Tags = telConfig.CirconusCheckTags
cfg.CheckManager.Broker.ID = telConfig.CirconusBrokerID
cfg.CheckManager.Broker.SelectTag = telConfig.CirconusBrokerSelectTag
if cfg.CheckManager.API.TokenApp == "" {
cfg.CheckManager.API.TokenApp = "vault"
}
if cfg.CheckManager.Check.DisplayName == "" {
cfg.CheckManager.Check.DisplayName = "Vault"
}
if cfg.CheckManager.Check.SearchTag == "" {
cfg.CheckManager.Check.SearchTag = "service:vault"
}
sink, err := circonus.NewCirconusSink(cfg)
if err != nil {
return err
}
sink.Start()
fanout = append(fanout, sink)
}
if telConfig.DogStatsDAddr != "" {
var tags []string
if telConfig.DogStatsDTags != nil {
tags = telConfig.DogStatsDTags
}
sink, err := datadog.NewDogStatsdSink(telConfig.DogStatsDAddr, metricsConf.HostName)
if err != nil {
return errwrap.Wrapf("failed to start DogStatsD sink: {{err}}", err)
}
sink.SetTags(tags)
fanout = append(fanout, sink)
}
// Initialize the global sink
if len(fanout) > 0 {
fanout = append(fanout, inm)
metrics.NewGlobal(metricsConf, fanout)
} else {
metricsConf.EnableHostname = false
metrics.NewGlobal(metricsConf, inm)
}
return nil
}
func (c *ServerCommand) Reload(lock *sync.RWMutex, reloadFuncs *map[string][]reload.ReloadFunc, configPath []string) error {
lock.RLock()
defer lock.RUnlock()
var reloadErrors *multierror.Error
for k, relFuncs := range *reloadFuncs {
switch {
case strings.HasPrefix(k, "listener|"):
for _, relFunc := range relFuncs {
if relFunc != nil {
if err := relFunc(nil); err != nil {
reloadErrors = multierror.Append(reloadErrors, errwrap.Wrapf("error encountered reloading listener: {{err}}", err))
}
}
}
case strings.HasPrefix(k, "audit_file|"):
for _, relFunc := range relFuncs {
if relFunc != nil {
if err := relFunc(nil); err != nil {
reloadErrors = multierror.Append(reloadErrors, errwrap.Wrapf(fmt.Sprintf("error encountered reloading file audit device at path %q: {{err}}", strings.TrimPrefix(k, "audit_file|")), err))
}
}
}
}
}
// Send a message that we reloaded. This prevents "guessing" sleep times
// in tests.
select {
case c.reloadedCh <- struct{}{}:
default:
}
return reloadErrors.ErrorOrNil()
}
// storePidFile is used to write out our PID to a file if necessary
func (c *ServerCommand) storePidFile(pidPath string) error {
// Quit fast if no pidfile
if pidPath == "" {
return nil
}
// Open the PID file
pidFile, err := os.OpenFile(pidPath, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0644)
if err != nil {
return errwrap.Wrapf("could not open pid file: {{err}}", err)
}
defer pidFile.Close()
// Write out the PID
pid := os.Getpid()
_, err = pidFile.WriteString(fmt.Sprintf("%d", pid))
if err != nil {
return errwrap.Wrapf("could not write to pid file: {{err}}", err)
}
return nil
}
// removePidFile is used to cleanup the PID file if necessary
func (c *ServerCommand) removePidFile(pidPath string) error {
if pidPath == "" {
return nil
}
return os.Remove(pidPath)
}
type grpclogFaker struct {
logger log.Logger
log bool
}
func (g *grpclogFaker) Fatal(args ...interface{}) {
g.logger.Error(fmt.Sprint(args...))
os.Exit(1)
}
func (g *grpclogFaker) Fatalf(format string, args ...interface{}) {
g.logger.Error(fmt.Sprintf(format, args...))
os.Exit(1)
}
func (g *grpclogFaker) Fatalln(args ...interface{}) {
g.logger.Error(fmt.Sprintln(args...))
os.Exit(1)
}
func (g *grpclogFaker) Print(args ...interface{}) {
if g.log && g.logger.IsDebug() {
g.logger.Debug(fmt.Sprint(args...))
}
}
func (g *grpclogFaker) Printf(format string, args ...interface{}) {
if g.log && g.logger.IsDebug() {
g.logger.Debug(fmt.Sprintf(format, args...))
}
}
func (g *grpclogFaker) Println(args ...interface{}) {
if g.log && g.logger.IsDebug() {
g.logger.Debug(fmt.Sprintln(args...))
}
}
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