Ejemplo n.º 1
0
func main() {
	dbConfigsFile, dbCredentialsFile := dbconfigs.RegisterCommonFlags()
	flag.Parse()

	relog.Info("started vtaction %v", os.Args)

	rpc.HandleHTTP()
	jsonrpc.ServeHTTP()
	jsonrpc.ServeRPC()
	bsonrpc.ServeHTTP()
	bsonrpc.ServeRPC()

	logFile, err := os.OpenFile(*logFilename,
		os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0666)
	if err != nil {
		relog.Fatal("Can't open log file: %v", err)
	}
	relog.SetOutput(logFile)
	relog.SetPrefix(fmt.Sprintf("vtaction [%v] ", os.Getpid()))
	if err := relog.SetLevelByName(*logLevel); err != nil {
		relog.Fatal("%v", err)
	}
	relog.HijackLog(nil)
	relog.HijackStdio(logFile, logFile)

	mycnf, mycnfErr := mysqlctl.ReadMycnf(*mycnfFile)
	if mycnfErr != nil {
		relog.Fatal("mycnf read failed: %v", mycnfErr)
	}

	relog.Debug("mycnf: %v", jscfg.ToJson(mycnf))

	dbcfgs, cfErr := dbconfigs.Init(mycnf.SocketFile, *dbConfigsFile, *dbCredentialsFile)
	if err != nil {
		relog.Fatal("%s", cfErr)
	}
	mysqld := mysqlctl.NewMysqld(mycnf, dbcfgs.Dba, dbcfgs.Repl)

	topoServer := topo.GetServer()
	defer topo.CloseServers()

	actor := tabletmanager.NewTabletActor(mysqld, topoServer)

	// we delegate out startup to the micromanagement server so these actions
	// will occur after we have obtained our socket.
	bindAddr := fmt.Sprintf(":%v", *port)
	httpServer := &http.Server{Addr: bindAddr}
	go func() {
		if err := httpServer.ListenAndServe(); err != nil {
			relog.Error("httpServer.ListenAndServe err: %v", err)
		}
	}()

	actionErr := actor.HandleAction(*actionNode, *action, *actionGuid, *force)
	if actionErr != nil {
		relog.Fatal("action error: %v", actionErr)
	}

	relog.Info("finished vtaction %v", os.Args)
}
Ejemplo n.º 2
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()
}