// Run Start the healthchecker main loop
func Run() {
healthchecker = proxyHealthCheckFactory()
// Wrap with a wait.Forever to handle panics.
go wait.Forever(func() {
healthchecker.handlerLoop()
}, 0)
}
// Start eager background caching of volume stats.
func (s *fsResourceAnalyzer) Start() {
s.startOnce.Do(func() {
if s.calcPeriod <= 0 {
glog.Info("Volume stats collection disabled.")
return
}
glog.Info("Starting FS ResourceAnalyzer")
go wait.Forever(func() { s.updateCachedPodVolumeStats() }, s.calcPeriod)
})
}
// RegisterMetricAndTrackRateLimiterUsage registers a metric ownerName_rate_limiter_use in prometheus to track
// how much used rateLimiter is and starts a goroutine that updates this metric every updatePeriod
func RegisterMetricAndTrackRateLimiterUsage(ownerName string, rateLimiter flowcontrol.RateLimiter) error {
err := registerRateLimiterMetric(ownerName)
if err != nil {
return err
}
go wait.Forever(func() {
metricsLock.Lock()
defer metricsLock.Unlock()
rateLimiterMetrics[ownerName].Set(rateLimiter.Saturation())
}, updatePeriod)
return nil
}
func newPortRangeAllocator(r net.PortRange, autoFill bool) PortAllocator {
if r.Base == 0 || r.Size == 0 {
panic("illegal argument: may not specify an empty port range")
}
ra := &rangeAllocator{
PortRange: r,
ports: make(chan int, portsBufSize),
rand: rand.New(rand.NewSource(time.Now().UnixNano())),
}
if autoFill {
go wait.Forever(func() { ra.fillPorts() }, nextFreePortCooldown)
}
return ra
}
func (plugin *cniNetworkPlugin) Init(host network.Host, hairpinMode componentconfig.HairpinMode, nonMasqueradeCIDR string, mtu int) error {
var err error
plugin.nsenterPath, err = plugin.execer.LookPath("nsenter")
if err != nil {
return err
}
plugin.host = host
// sync network config from pluginDir periodically to detect network config updates
go wait.Forever(func() {
plugin.syncNetworkConfig()
}, 10*time.Second)
return nil
}
func (p RESTStorageProvider) postStartHookFunc(hookContext genericapiserver.PostStartHookContext) error {
clientset, err := extensionsclient.NewForConfig(hookContext.LoopbackClientConfig)
if err != nil {
utilruntime.HandleError(fmt.Errorf("unable to initialize clusterroles: %v", err))
return nil
}
thirdPartyControl := ThirdPartyController{
master: p.ResourceInterface,
client: clientset,
}
go wait.Forever(func() {
if err := thirdPartyControl.SyncResources(); err != nil {
glog.Warningf("third party resource sync failed: %v", err)
}
}, 10*time.Second)
return nil
}
func (m *manager) Start() {
// Don't start the status manager if we don't have a client. This will happen
// on the master, where the kubelet is responsible for bootstrapping the pods
// of the master components.
if m.kubeClient == nil {
glog.Infof("Kubernetes client is nil, not starting status manager.")
return
}
glog.Info("Starting to sync pod status with apiserver")
syncTicker := time.Tick(syncPeriod)
// syncPod and syncBatch share the same go routine to avoid sync races.
go wait.Forever(func() {
select {
case syncRequest := <-m.podStatusChannel:
m.syncPod(syncRequest.podUID, syncRequest.status)
case <-syncTicker:
m.syncBatch()
}
}, 0)
}
func NewSourceFile(path string, nodeName types.NodeName, period time.Duration, updates chan<- interface{}) {
config := new(path, nodeName, period, updates)
glog.V(1).Infof("Watching path %q", path)
go wait.Forever(config.run, period)
}
// Start syncing probe status. This should only be called once.
func (m *manager) Start() {
// Start syncing readiness.
go wait.Forever(m.updateReadiness, 0)
}