// Run blocks implementing the scheduler module.
func Run(conn db.Conn, dk docker.Client) {
bootWait(conn)
subnet := getMinionSubnet(conn)
err := dk.ConfigureNetwork(plugin.NetworkName, subnet)
if err != nil {
log.WithError(err).Fatal("Failed to configure network plugin")
}
loopLog := util.NewEventTimer("Scheduler")
trig := conn.TriggerTick(60, db.MinionTable, db.ContainerTable,
db.PlacementTable, db.EtcdTable).C
for range trig {
loopLog.LogStart()
minion, err := conn.MinionSelf()
if err != nil {
log.WithError(err).Warn("Missing self in the minion table.")
continue
}
if minion.Role == db.Worker {
subnet = updateNetwork(conn, dk, subnet)
runWorker(conn, dk, minion.PrivateIP, subnet)
} else if minion.Role == db.Master {
runMaster(conn)
}
loopLog.LogEnd()
}
}
// Run blocks implementing the network services.
func Run(conn db.Conn, dk docker.Client) {
loopLog := util.NewEventTimer("Network")
for range conn.TriggerTick(30, db.MinionTable, db.ContainerTable,
db.ConnectionTable, db.LabelTable, db.EtcdTable).C {
loopLog.LogStart()
runWorker(conn, dk)
runMaster(conn)
loopLog.LogEnd()
}
}
// Manage system infrstracture containers that support the application.
func (sv *supervisor) runSystem() {
imageSet := map[string]struct{}{}
for _, image := range images {
imageSet[image] = struct{}{}
}
for image := range imageSet {
go sv.dk.Pull(image)
}
loopLog := util.NewEventTimer("Supervisor")
for range sv.conn.Trigger(db.MinionTable, db.EtcdTable).C {
loopLog.LogStart()
sv.runSystemOnce()
loopLog.LogEnd()
}
}
// Run blocks executing the minion.
func Run() {
// XXX Uncomment the following line to run the profiler
//runProfiler(5 * time.Minute)
log.Info("Minion Start")
conn := db.New()
dk := docker.New("unix:///var/run/docker.sock")
// Not in a goroutine, want the plugin to start before the scheduler
plugin.Run()
go minionServerRun(conn)
go supervisor.Run(conn, dk)
go scheduler.Run(conn, dk)
go network.Run(conn, dk)
go etcd.Run(conn)
go syncAuthorizedKeys(conn)
go apiServer.Run(conn, fmt.Sprintf("tcp://0.0.0.0:%d", api.DefaultRemotePort))
loopLog := util.NewEventTimer("Minion-Update")
for range conn.Trigger(db.MinionTable).C {
loopLog.LogStart()
conn.Transact(func(view db.Database) error {
minion, err := view.MinionSelf()
if err != nil {
return err
}
updatePolicy(view, minion.Role, minion.Spec)
return nil
})
loopLog.LogEnd()
}
}