func daemon(context *cli.Context) error {
// setup a standard reaper so that we don't leave any zombies if we are still alive
// this is just good practice because we are spawning new processes
s := make(chan os.Signal, 2048)
signal.Notify(s, syscall.SIGCHLD, syscall.SIGTERM, syscall.SIGINT)
if err := osutils.SetSubreaper(1); err != nil {
logrus.WithField("error", err).Error("containerd: set subpreaper")
}
sv, err := supervisor.New(
context.String("state-dir"),
context.String("runtime"),
context.String("shim"),
context.StringSlice("runtime-args"),
context.Duration("start-timeout"),
context.Int("retain-count"))
if err != nil {
return err
}
wg := &sync.WaitGroup{}
for i := 0; i < 10; i++ {
wg.Add(1)
w := supervisor.NewWorker(sv, wg)
go w.Start()
}
if err := sv.Start(); err != nil {
return err
}
// Split the listen string of the form proto://addr
listenSpec := context.String("listen")
listenParts := strings.SplitN(listenSpec, "://", 2)
if len(listenParts) != 2 {
return fmt.Errorf("bad listen address format %s, expected proto://address", listenSpec)
}
server, err := startServer(listenParts[0], listenParts[1], sv)
if err != nil {
return err
}
for ss := range s {
switch ss {
case syscall.SIGCHLD:
if _, err := osutils.Reap(); err != nil {
logrus.WithField("error", err).Warn("containerd: reap child processes")
}
default:
logrus.Infof("stopping containerd after receiving %s", ss)
server.Stop()
os.Exit(0)
}
}
return nil
}
func daemon(id, address, stateDir string, concurrency int, oom bool) error {
tasks := make(chan *supervisor.StartTask, concurrency*100)
sv, err := supervisor.New(id, stateDir, tasks, oom)
if err != nil {
return err
}
wg := &sync.WaitGroup{}
for i := 0; i < concurrency; i++ {
wg.Add(1)
w := supervisor.NewWorker(sv, wg)
go w.Start()
}
// only set containerd as the subreaper if it is not an init process
if pid := os.Getpid(); pid != 1 {
logrus.WithFields(logrus.Fields{
"pid": pid,
}).Debug("containerd is not init, set as subreaper")
if err := setSubReaper(); err != nil {
return err
}
}
// start the signal handler in the background.
go startSignalHandler(sv)
if err := sv.Start(); err != nil {
return err
}
if err := os.RemoveAll(address); err != nil {
return err
}
l, err := net.Listen("unix", address)
if err != nil {
return err
}
s := grpc.NewServer()
types.RegisterAPIServer(s, server.NewServer(sv))
protoversion.RegisterAPIServer(
s,
protoversion.NewAPIServer(
containerd.Version,
protoversion.APIServerOptions{
DisableLogging: true,
},
),
)
logrus.Debugf("GRPC API listen on %s", address)
return s.Serve(l)
}
func daemon(context *cli.Context) error {
s := make(chan os.Signal, 2048)
signal.Notify(s, syscall.SIGTERM, syscall.SIGINT)
osutils.SetSubreaper(1)
sv, err := supervisor.New(
context.String("state-dir"),
context.String("runtime"),
context.String("shim"),
context.StringSlice("runtime-args"),
context.Duration("start-timeout"),
context.Int("retain-count"))
if err != nil {
return err
}
wg := &sync.WaitGroup{}
for i := 0; i < 10; i++ {
wg.Add(1)
w := supervisor.NewWorker(sv, wg)
go w.Start()
}
if err := sv.Start(); err != nil {
return err
}
// Split the listen string of the form proto://addr
listenSpec := context.String("listen")
listenParts := strings.SplitN(listenSpec, "://", 2)
if len(listenParts) != 2 {
return fmt.Errorf("bad listen address format %s, expected proto://address", listenSpec)
}
server, err := startServer(listenParts[0], listenParts[1], sv)
if err != nil {
return err
}
for ss := range s {
switch ss {
default:
logrus.Infof("stopping containerd after receiving %s", ss)
server.Stop()
os.Exit(0)
}
}
return nil
}
func daemon(stateDir string, concurrency int, runtimeName string, runtimeArgs []string) (types.APIServer, error) {
if err := subreaper.Start(); err != nil {
logrus.WithField("error", err).Error("containerd: start subreaper")
}
sv, err := supervisor.New(filepath.Join(stateDir, "containerd"), runtimeName, "", runtimeArgs, 15*time.Second, 500)
if err != nil {
return nil, err
}
wg := &sync.WaitGroup{}
for i := 0; i < concurrency; i++ {
wg.Add(1)
w := supervisor.NewWorker(sv, wg)
go w.Start()
}
if err := sv.Start(); err != nil {
return nil, err
}
return server.NewServer(sv), nil
}
func daemon(address, stateDir string, concurrency int, runtimeName string, runtimeArgs []string, shimName string, timeout time.Duration) error {
// setup a standard reaper so that we don't leave any zombies if we are still alive
// this is just good practice because we are spawning new processes
s := make(chan os.Signal, 2048)
signal.Notify(s, syscall.SIGCHLD, syscall.SIGTERM, syscall.SIGINT)
if err := osutils.SetSubreaper(1); err != nil {
logrus.WithField("error", err).Error("containerd: set subpreaper")
}
sv, err := supervisor.New(stateDir, runtimeName, shimName, runtimeArgs, timeout)
if err != nil {
return err
}
wg := &sync.WaitGroup{}
for i := 0; i < concurrency; i++ {
wg.Add(1)
w := supervisor.NewWorker(sv, wg)
go w.Start()
}
if err := sv.Start(); err != nil {
return err
}
server, err := startServer(address, sv)
if err != nil {
return err
}
for ss := range s {
switch ss {
case syscall.SIGCHLD:
if _, err := osutils.Reap(); err != nil {
logrus.WithField("error", err).Warn("containerd: reap child processes")
}
default:
logrus.Infof("stopping containerd after receiving %s", ss)
server.Stop()
os.Exit(0)
}
}
return nil
}