Example #1
0
func Init(logPrefix string) error {
	// Once you run as root, you pretty much destroy the chances of a
	// non-privileged user starting the program correctly.
	if uid := os.Getuid(); uid == 0 {
		return fmt.Errorf("running this as root makes no sense")
	}
	if logPrefix != "" {
		logPrefix += " "
	}
	logPrefix += fmt.Sprintf("[%v] ", os.Getpid())
	f, err := logfile.Open(*logfileName, *logFrequency, *logMaxSize, *logMaxFiles)
	if err != nil {
		return fmt.Errorf("unable to open logfile %s: %v", *logfileName, err)
	}
	relog.SetOutput(f)
	relog.SetPrefix(logPrefix)
	relog.SetLevel(relog.DEBUG)
	relog.HijackLog(nil)
	// FIXME(msolomon) Can't hijack with a logfile because the file descriptor
	// changes after every rotation. Might need to make the logfile more posix
	// friendly.
	//relog.HijackStdio(f, f)
	runtime.MemProfileRate = *memProfileRate
	gomaxprocs := os.Getenv("GOMAXPROCS")
	if gomaxprocs == "" {
		gomaxprocs = "1"
	}
	// Could report this in an expvar instead.
	relog.Info("GOMAXPROCS = %v", gomaxprocs)

	// We used to set this limit directly, but you pretty much have to
	// use a root account to allow increasing a limit reliably. Dropping
	// privileges is also tricky. The best strategy is to make a shell
	// script set up the limits as root and switch users before starting
	// the server.
	fdLimit := &syscall.Rlimit{}
	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, fdLimit); err != nil {
		relog.Error("max-open-fds failed: %v", err)
	} else {
		// Could report this in an expvar instead.
		relog.Info("max-open-fds: %v", fdLimit.Cur)
	}

	return exportBinaryVersion()
}
Example #2
0
func main() {
	defer func() {
		if panicErr := recover(); panicErr != nil {
			relog.Fatal("panic: %v", tb.Errorf("%v", panicErr))
		}
	}()

	flag.Parse()
	args := flag.Args()
	if len(args) != 0 {
		flag.Usage()
		os.Exit(1)
	}

	logLevel, err := relog.LogNameToLogLevel(*logLevel)
	if err != nil {
		relog.Fatal("%v", err)
	}
	relog.SetLevel(logLevel)

	if *fromTopo == "" || *toTopo == "" {
		relog.Fatal("Need both from and to topo")
	}

	fromTS := topo.GetServerByName(*fromTopo)
	toTS := topo.GetServerByName(*toTopo)

	if *doKeyspaces {
		topotools.CopyKeyspaces(fromTS, toTS)
	}
	if *doShards {
		topotools.CopyShards(fromTS, toTS, *deleteKeyspaceShards)
	}
	if *doTablets {
		topotools.CopyTablets(fromTS, toTS)
	}
}