Example #1
0
func (s *SchedulerServer) Run(hks hyperkube.Interface, _ []string) error {
	if n := len(s.frameworkRoles); n == 0 || n > 2 || (n == 2 && s.frameworkRoles[0] != "*" && s.frameworkRoles[1] != "*") {
		log.Fatalf(`only one custom role allowed in addition to "*"`)
	}

	fwSet := sets.NewString(s.frameworkRoles...)
	podSet := sets.NewString(s.defaultPodRoles...)
	if !fwSet.IsSuperset(podSet) {
		log.Fatalf("all default pod roles %q must be included in framework roles %q", s.defaultPodRoles, s.frameworkRoles)
	}

	// get scheduler low-level config
	sc := schedcfg.CreateDefaultConfig()
	if s.schedulerConfigFileName != "" {
		f, err := os.Open(s.schedulerConfigFileName)
		if err != nil {
			log.Fatalf("Cannot open scheduler config file: %v", err)
		}
		defer f.Close()

		err = sc.Read(bufio.NewReader(f))
		if err != nil {
			log.Fatalf("Invalid scheduler config file: %v", err)
		}
	}

	schedulerProcess, driverFactory, etcdClient, eid := s.bootstrap(hks, sc)

	if s.enableProfiling {
		profile.InstallHandler(s.mux)
	}
	go runtime.Until(func() {
		log.V(1).Info("Starting HTTP interface")
		log.Error(http.ListenAndServe(net.JoinHostPort(s.address.String(), strconv.Itoa(s.port)), s.mux))
	}, sc.HttpBindInterval.Duration, schedulerProcess.Terminal())

	if s.ha {
		validation := ha.ValidationFunc(validateLeadershipTransition)
		srv := ha.NewCandidate(schedulerProcess, driverFactory, validation)
		path := meta.ElectionPath(s.frameworkName)
		uuid := eid.GetValue() + ":" + uuid.New() // unique for each scheduler instance
		log.Infof("registering for election at %v with id %v", path, uuid)
		go election.Notify(
			election.NewEtcdMasterElector(etcdClient),
			path,
			uuid,
			srv,
			nil)
	} else {
		log.Infoln("self-electing in non-HA mode")
		schedulerProcess.Elect(driverFactory)
	}
	return s.awaitFailover(schedulerProcess, func() error { return s.failover(s.getDriver(), hks) })
}
Example #2
0
func (s *SchedulerServer) Run(hks hyperkube.Interface, _ []string) error {
	// get scheduler low-level config
	sc := schedcfg.CreateDefaultConfig()
	if s.SchedulerConfigFileName != "" {
		f, err := os.Open(s.SchedulerConfigFileName)
		if err != nil {
			log.Fatalf("Cannot open scheduler config file: %v", err)
		}

		err = sc.Read(bufio.NewReader(f))
		if err != nil {
			log.Fatalf("Invalid scheduler config file: %v", err)
		}
	}

	schedulerProcess, driverFactory, etcdClient, eid := s.bootstrap(hks, sc)

	if s.EnableProfiling {
		profile.InstallHandler(s.mux)
	}
	go runtime.Until(func() {
		log.V(1).Info("Starting HTTP interface")
		log.Error(http.ListenAndServe(net.JoinHostPort(s.Address.String(), strconv.Itoa(s.Port)), s.mux))
	}, sc.HttpBindInterval.Duration, schedulerProcess.Terminal())

	if s.HA {
		validation := ha.ValidationFunc(validateLeadershipTransition)
		srv := ha.NewCandidate(schedulerProcess, driverFactory, validation)
		path := fmt.Sprintf(meta.DefaultElectionFormat, s.FrameworkName)
		sid := uid.New(eid.Group(), "").String()
		log.Infof("registering for election at %v with id %v", path, sid)
		go election.Notify(election.NewEtcdMasterElector(etcdClient), path, sid, srv, nil)
	} else {
		log.Infoln("self-electing in non-HA mode")
		schedulerProcess.Elect(driverFactory)
	}
	return s.awaitFailover(schedulerProcess, func() error { return s.failover(s.getDriver(), hks) })
}