func (cfg *config) configFromCmdLine() error {
err := flags.SetFlagsFromEnv("ETCD", cfg.FlagSet)
if err != nil {
plog.Fatalf("%v", err)
}
flags.SetBindAddrFromAddr(cfg.FlagSet, "peer-bind-addr", "peer-addr")
flags.SetBindAddrFromAddr(cfg.FlagSet, "bind-addr", "addr")
cfg.lpurls, err = flags.URLsFromFlags(cfg.FlagSet, "listen-peer-urls", "peer-bind-addr", cfg.peerTLSInfo)
if err != nil {
return err
}
cfg.apurls, err = flags.URLsFromFlags(cfg.FlagSet, "initial-advertise-peer-urls", "peer-addr", cfg.peerTLSInfo)
if err != nil {
return err
}
cfg.lcurls, err = flags.URLsFromFlags(cfg.FlagSet, "listen-client-urls", "bind-addr", cfg.clientTLSInfo)
if err != nil {
return err
}
cfg.acurls, err = flags.URLsFromFlags(cfg.FlagSet, "advertise-client-urls", "addr", cfg.clientTLSInfo)
if err != nil {
return err
}
return cfg.validateConfig(func(field string) bool {
return flags.IsSet(cfg.FlagSet, field)
})
}
func (cfg *config) Parse(arguments []string) error {
perr := cfg.FlagSet.Parse(arguments)
switch perr {
case nil:
case flag.ErrHelp:
fmt.Println(flagsline)
os.Exit(0)
default:
os.Exit(2)
}
if len(cfg.FlagSet.Args()) != 0 {
return fmt.Errorf("'%s' is not a valid flag", cfg.FlagSet.Arg(0))
}
if cfg.printVersion {
fmt.Printf("etcd Version: %s\n", version.Version)
fmt.Printf("Git SHA: %s\n", version.GitSHA)
fmt.Printf("Go Version: %s\n", runtime.Version())
fmt.Printf("Go OS/Arch: %s/%s\n", runtime.GOOS, runtime.GOARCH)
os.Exit(0)
}
err := flags.SetFlagsFromEnv("ETCD", cfg.FlagSet)
if err != nil {
plog.Fatalf("%v", err)
}
set := make(map[string]bool)
cfg.FlagSet.Visit(func(f *flag.Flag) {
set[f.Name] = true
})
nSet := 0
for _, v := range []bool{set["discovery"], set["initial-cluster"], set["discovery-srv"]} {
if v {
nSet += 1
}
}
if nSet > 1 {
return ErrConflictBootstrapFlags
}
flags.SetBindAddrFromAddr(cfg.FlagSet, "peer-bind-addr", "peer-addr")
flags.SetBindAddrFromAddr(cfg.FlagSet, "bind-addr", "addr")
cfg.lpurls, err = flags.URLsFromFlags(cfg.FlagSet, "listen-peer-urls", "peer-bind-addr", cfg.peerTLSInfo)
if err != nil {
return err
}
cfg.apurls, err = flags.URLsFromFlags(cfg.FlagSet, "initial-advertise-peer-urls", "peer-addr", cfg.peerTLSInfo)
if err != nil {
return err
}
cfg.lcurls, err = flags.URLsFromFlags(cfg.FlagSet, "listen-client-urls", "bind-addr", cfg.clientTLSInfo)
if err != nil {
return err
}
cfg.acurls, err = flags.URLsFromFlags(cfg.FlagSet, "advertise-client-urls", "addr", cfg.clientTLSInfo)
if err != nil {
return err
}
// when etcd runs in member mode user needs to set --advertise-client-urls if --listen-client-urls is set.
// TODO(yichengq): check this for joining through discovery service case
mayFallbackToProxy := flags.IsSet(cfg.FlagSet, "discovery") && cfg.fallback.String() == fallbackFlagProxy
mayBeProxy := cfg.proxy.String() != proxyFlagOff || mayFallbackToProxy
if !mayBeProxy {
if flags.IsSet(cfg.FlagSet, "listen-client-urls") && !flags.IsSet(cfg.FlagSet, "advertise-client-urls") {
return errUnsetAdvertiseClientURLsFlag
}
}
if 5*cfg.TickMs > cfg.ElectionMs {
return fmt.Errorf("--election-timeout[%vms] should be at least as 5 times as --heartbeat-interval[%vms]", cfg.ElectionMs, cfg.TickMs)
}
if cfg.ElectionMs > maxElectionMs {
return fmt.Errorf("--election-timeout[%vms] is too long, and should be set less than %vms", cfg.ElectionMs, maxElectionMs)
}
return nil
}