// Start the container manager.
func (self *manager) Start() error {
if *enableLoadReader {
// Create cpu load reader.
cpuLoadReader, err := cpuload.New()
if err != nil {
// TODO(rjnagal): Promote to warning once we support cpu load inside namespaces.
glog.Infof("Could not initialize cpu load reader: %s", err)
} else {
err = cpuLoadReader.Start()
if err != nil {
glog.Warning("Could not start cpu load stat collector: %s", err)
} else {
self.loadReader = cpuLoadReader
}
}
}
// Watch for OOMs.
err := self.watchForNewOoms()
if err != nil {
glog.Errorf("Failed to start OOM watcher, will not get OOM events: %v", err)
}
// If there are no factories, don't start any housekeeping and serve the information we do have.
if !container.HasFactories() {
return nil
}
// Create root and then recover all containers.
err = self.createContainer("/")
if err != nil {
return err
}
glog.Infof("Starting recovery of all containers")
err = self.detectSubcontainers("/")
if err != nil {
return err
}
glog.Infof("Recovery completed")
// Watch for new container.
quitWatcher := make(chan error)
err = self.watchForNewContainers(quitWatcher)
if err != nil {
return err
}
self.quitChannels = append(self.quitChannels, quitWatcher)
// Look for new containers in the main housekeeping thread.
quitGlobalHousekeeping := make(chan error)
self.quitChannels = append(self.quitChannels, quitGlobalHousekeeping)
go self.globalHousekeeping(quitGlobalHousekeeping)
return nil
}
func newContainerData(containerName string, memoryCache *memory.InMemoryCache, handler container.ContainerHandler, logUsage bool, collectorManager collector.CollectorManager, maxHousekeepingInterval time.Duration, allowDynamicHousekeeping bool) (*containerData, error) {
if memoryCache == nil {
return nil, fmt.Errorf("nil memory storage")
}
if handler == nil {
return nil, fmt.Errorf("nil container handler")
}
ref, err := handler.ContainerReference()
if err != nil {
return nil, err
}
cont := &containerData{
handler: handler,
memoryCache: memoryCache,
housekeepingInterval: *HousekeepingInterval,
maxHousekeepingInterval: maxHousekeepingInterval,
allowDynamicHousekeeping: allowDynamicHousekeeping,
logUsage: logUsage,
loadAvg: -1.0, // negative value indicates uninitialized.
stop: make(chan bool, 1),
collectorManager: collectorManager,
}
cont.info.ContainerReference = ref
cont.loadDecay = math.Exp(float64(-cont.housekeepingInterval.Seconds() / 10))
if *enableLoadReader {
// Create cpu load reader.
loadReader, err := cpuload.New()
if err != nil {
// TODO(rjnagal): Promote to warning once we support cpu load inside namespaces.
glog.Infof("Could not initialize cpu load reader for %q: %s", ref.Name, err)
} else {
cont.loadReader = loadReader
}
}
err = cont.updateSpec()
if err != nil {
return nil, err
}
cont.summaryReader, err = summary.New(cont.info.Spec)
if err != nil {
cont.summaryReader = nil
glog.Warningf("Failed to create summary reader for %q: %v", ref.Name, err)
}
return cont, nil
}
// Start the container manager.
func (self *manager) Start() error {
// Create cpu load reader.
cpuLoadReader, err := cpuload.New()
if err != nil {
// TODO(rjnagal): Promote to warning once we support cpu load inside namespaces.
glog.Infof("Could not initialize cpu load reader: %s", err)
} else {
err = cpuLoadReader.Start()
if err != nil {
glog.Warning("Could not start cpu load stat collector: %s", err)
} else {
self.loadReader = cpuLoadReader
}
}
// Create root and then recover all containers.
err = self.createContainer("/")
if err != nil {
return err
}
glog.Infof("Starting recovery of all containers")
err = self.detectSubcontainers("/")
if err != nil {
return err
}
glog.Infof("Recovery completed")
// Watch for new container.
quitWatcher := make(chan error)
err = self.watchForNewContainers(quitWatcher)
if err != nil {
return err
}
self.quitChannels = append(self.quitChannels, quitWatcher)
// Look for new containers in the main housekeeping thread.
quitGlobalHousekeeping := make(chan error)
self.quitChannels = append(self.quitChannels, quitGlobalHousekeeping)
go self.globalHousekeeping(quitGlobalHousekeeping)
return nil
}
// Start the container manager.
func (self *manager) Start() error {
err := docker.Register(self, self.fsInfo, self.ignoreMetrics)
if err != nil {
glog.Errorf("Docker container factory registration failed: %v.", err)
}
err = rkt.Register(self, self.fsInfo, self.ignoreMetrics)
if err != nil {
glog.Errorf("Registration of the rkt container factory failed: %v", err)
}
err = systemd.Register(self, self.fsInfo, self.ignoreMetrics)
if err != nil {
glog.Errorf("Registration of the systemd container factory failed: %v", err)
}
err = raw.Register(self, self.fsInfo, self.ignoreMetrics)
if err != nil {
glog.Errorf("Registration of the raw container factory failed: %v", err)
}
self.DockerInfo()
self.DockerImages()
if *enableLoadReader {
// Create cpu load reader.
cpuLoadReader, err := cpuload.New()
if err != nil {
// TODO(rjnagal): Promote to warning once we support cpu load inside namespaces.
glog.Infof("Could not initialize cpu load reader: %s", err)
} else {
err = cpuLoadReader.Start()
if err != nil {
glog.Warningf("Could not start cpu load stat collector: %s", err)
} else {
self.loadReader = cpuLoadReader
}
}
}
// Watch for OOMs.
err = self.watchForNewOoms()
if err != nil {
glog.Warningf("Could not configure a source for OOM detection, disabling OOM events: %v", err)
}
// If there are no factories, don't start any housekeeping and serve the information we do have.
if !container.HasFactories() {
return nil
}
// Create root and then recover all containers.
err = self.createContainer("/")
if err != nil {
return err
}
glog.Infof("Starting recovery of all containers")
err = self.detectSubcontainers("/")
if err != nil {
return err
}
glog.Infof("Recovery completed")
// Watch for new container.
quitWatcher := make(chan error)
err = self.watchForNewContainers(quitWatcher)
if err != nil {
return err
}
self.quitChannels = append(self.quitChannels, quitWatcher)
// Look for new containers in the main housekeeping thread.
quitGlobalHousekeeping := make(chan error)
self.quitChannels = append(self.quitChannels, quitGlobalHousekeeping)
go self.globalHousekeeping(quitGlobalHousekeeping)
return nil
}