// Run launches a template router using the provided options. It never exits.
func (o *TemplateRouterOptions) Run() error {
pluginCfg := templateplugin.TemplatePluginConfig{
WorkingDir: o.WorkingDir,
TemplatePath: o.TemplateFile,
ReloadScriptPath: o.ReloadScript,
DefaultCertificate: o.DefaultCertificate,
StatsPort: o.StatsPort,
StatsUsername: o.StatsUsername,
StatsPassword: o.StatsPassword,
PeerService: o.RouterService,
IncludeUDP: o.RouterSelection.IncludeUDP,
}
templatePlugin, err := templateplugin.NewTemplatePlugin(pluginCfg)
if err != nil {
return err
}
plugin := controller.NewUniqueHost(templatePlugin, controller.HostForRoute)
oc, kc, err := o.Config.Clients()
if err != nil {
return err
}
factory := o.RouterSelection.NewFactory(oc, kc)
controller := factory.Create(plugin)
controller.Run()
proc.StartReaper()
select {}
}
func main() {
clientConfig := kubectl_util.DefaultClientConfig(flags)
flags.Parse(os.Args)
cfg := parseCfg(*config, *lbDefAlgorithm)
if len(*tcpServices) == 0 {
glog.Infof("All tcp/https services will be ignored.")
}
var kubeClient *unversioned.Client
var err error
defErrorPage := newStaticPageHandler(*errorPage, defaultErrorPage)
if defErrorPage == nil {
glog.Fatalf("Failed to load the default error page")
}
go registerHandlers(defErrorPage)
proc.StartReaper()
if *startSyslog {
cfg.startSyslog = true
_, err = newSyslogServer("/var/run/haproxy.log.socket")
if err != nil {
glog.Fatalf("Failed to start syslog server: %v", err)
}
}
if *cluster {
if kubeClient, err = unversioned.NewInCluster(); err != nil {
glog.Fatalf("Failed to create client: %v", err)
}
} else {
config, err := clientConfig.ClientConfig()
if err != nil {
glog.Fatalf("error connecting to the client: %v", err)
}
kubeClient, err = unversioned.New(config)
}
namespace, specified, err := clientConfig.Namespace()
if err != nil {
glog.Fatalf("unexpected error: %v", err)
}
if !specified {
namespace = api.NamespaceDefault
}
// TODO: Handle multiple namespaces
lbc := newLoadBalancerController(cfg, kubeClient, namespace)
go lbc.epController.Run(util.NeverStop)
go lbc.svcController.Run(util.NeverStop)
if *dry {
dryRun(lbc)
} else {
lbc.cfg.reload()
util.Until(lbc.worker, time.Second, util.NeverStop)
}
}
func main() {
clientConfig := kubectl_util.DefaultClientConfig(flags)
flags.Parse(os.Args)
var err error
var kubeClient *unversioned.Client
if *cluster {
if kubeClient, err = unversioned.NewInCluster(); err != nil {
glog.Fatalf("Failed to create client: %v", err)
}
} else {
config, err := clientConfig.ClientConfig()
if err != nil {
glog.Fatalf("error connecting to the client: %v", err)
}
kubeClient, err = unversioned.New(config)
}
namespace, specified, err := clientConfig.Namespace()
if err != nil {
glog.Fatalf("unexpected error: %v", err)
}
if !specified {
namespace = ""
}
err = loadIPVModule()
if err != nil {
glog.Fatalf("Terminating execution: %v", err)
}
err = changeSysctl()
if err != nil {
glog.Fatalf("Terminating execution: %v", err)
}
proc.StartReaper()
glog.Info("starting LVS configuration")
if *useUnicast {
glog.Info("keepalived will use unicast to sync the nodes")
}
ipvsc := newIPVSController(kubeClient, namespace, *useUnicast)
go ipvsc.epController.Run(util.NeverStop)
go ipvsc.svcController.Run(util.NeverStop)
go util.Until(ipvsc.worker, time.Second, util.NeverStop)
time.Sleep(5 * time.Second)
glog.Info("starting keepalived to announce VIPs")
ipvsc.keepalived.Start()
}
// start launches the router.
func start(cfg *clientcmd.Config, plugin router.Plugin) error {
osClient, kubeClient, err := cfg.Clients()
if err != nil {
return err
}
proc.StartReaper()
factory := controllerfactory.RouterControllerFactory{KClient: kubeClient, OSClient: osClient}
controller := factory.Create(plugin)
controller.Run()
select {}
}
// Run launches a template router using the provided options. It never exits.
func (o *TemplateRouterOptions) Run() error {
pluginCfg := templateplugin.TemplatePluginConfig{
WorkingDir: o.WorkingDir,
TemplatePath: o.TemplateFile,
ReloadScriptPath: o.ReloadScript,
ReloadInterval: o.ReloadInterval,
DefaultCertificate: o.DefaultCertificate,
DefaultCertificatePath: o.DefaultCertificatePath,
DefaultCertificateDir: o.DefaultCertificateDir,
StatsPort: o.StatsPort,
StatsUsername: o.StatsUsername,
StatsPassword: o.StatsPassword,
PeerService: o.RouterService,
BindPortsAfterSync: o.BindPortsAfterSync,
IncludeUDP: o.RouterSelection.IncludeUDP,
AllowWildcardRoutes: o.RouterSelection.AllowWildcardRoutes,
}
oc, kc, err := o.Config.Clients()
if err != nil {
return err
}
svcFetcher := templateplugin.NewListWatchServiceLookup(kc.Core(), 10*time.Minute)
templatePlugin, err := templateplugin.NewTemplatePlugin(pluginCfg, svcFetcher)
if err != nil {
return err
}
statusPlugin := controller.NewStatusAdmitter(templatePlugin, oc, o.RouterName)
var nextPlugin router.Plugin = statusPlugin
if o.ExtendedValidation {
nextPlugin = controller.NewExtendedValidator(nextPlugin, controller.RejectionRecorder(statusPlugin))
}
uniqueHostPlugin := controller.NewUniqueHost(nextPlugin, o.RouteSelectionFunc(), controller.RejectionRecorder(statusPlugin))
plugin := controller.NewHostAdmitter(uniqueHostPlugin, o.RouteAdmissionFunc(), o.RestrictSubdomainOwnership, controller.RejectionRecorder(statusPlugin))
factory := o.RouterSelection.NewFactory(oc, kc)
controller := factory.Create(plugin, false)
controller.Run()
proc.StartReaper()
select {}
}
func main() {
flags.Parse(os.Args)
cfg := parseCfg(*config)
if len(*tcpServices) == 0 {
glog.Infof("All tcp/https services will be ignored.")
}
go healthzServer()
proc.StartReaper()
var kubeClient *unversioned.Client
var err error
clientConfig := kubectl_util.DefaultClientConfig(flags)
if *cluster {
if kubeClient, err = unversioned.NewInCluster(); err != nil {
glog.Fatalf("Failed to create client: %v", err)
}
} else {
config, err := clientConfig.ClientConfig()
if err != nil {
glog.Fatalf("error connecting to the client: %v", err)
}
kubeClient, err = unversioned.New(config)
}
namespace, specified, err := clientConfig.Namespace()
if err != nil {
glog.Fatalf("unexpected error: %v", err)
}
if !specified {
namespace = "default"
}
// TODO: Handle multiple namespaces
lbc := newLoadBalancerController(cfg, kubeClient, namespace)
go lbc.epController.Run(util.NeverStop)
go lbc.svcController.Run(util.NeverStop)
if *dry {
dryRun(lbc)
} else {
util.Until(lbc.worker, time.Second, util.NeverStop)
}
}
// Run launches a template router using the provided options. It never exits.
func (o *TemplateRouterOptions) Run() error {
pluginCfg := templateplugin.TemplatePluginConfig{
WorkingDir: o.WorkingDir,
TemplatePath: o.TemplateFile,
ReloadScriptPath: o.ReloadScript,
ReloadInterval: o.ReloadInterval,
DefaultCertificate: o.DefaultCertificate,
DefaultCertificatePath: o.DefaultCertificatePath,
StatsPort: o.StatsPort,
StatsUsername: o.StatsUsername,
StatsPassword: o.StatsPassword,
PeerService: o.RouterService,
IncludeUDP: o.RouterSelection.IncludeUDP,
}
templatePlugin, err := templateplugin.NewTemplatePlugin(pluginCfg)
if err != nil {
return err
}
oc, kc, err := o.Config.Clients()
if err != nil {
return err
}
statusPlugin := controller.NewStatusAdmitter(templatePlugin, oc, o.RouterName)
var nextPlugin router.Plugin = statusPlugin
if o.ExtendedValidation {
nextPlugin = controller.NewExtendedValidator(nextPlugin, controller.RejectionRecorder(statusPlugin))
}
plugin := controller.NewUniqueHost(nextPlugin, o.RouteSelectionFunc(), controller.RejectionRecorder(statusPlugin))
factory := o.RouterSelection.NewFactory(oc, kc)
controller := factory.Create(plugin)
controller.Run()
proc.StartReaper()
select {}
}
func main() {
flags.Parse(os.Args)
proc.StartReaper()
var kubeClient *client.Client
if *cluster {
clusterClient, err := client.NewInCluster()
if err != nil {
glog.Fatalf("Failed to create client: %v", err)
}
kubeClient = clusterClient
} else {
config := &client.Config{
Host: *master,
}
confClient, err := client.New(config)
if err != nil {
glog.Fatalf("Could not create api client %v", err)
}
kubeClient = confClient
}
err := haproxy.StartSyslogServer("/var/run/haproxy.log.sock")
if err != nil {
glog.Fatalf("Failed to start syslog server: %v", err)
}
lbc := newLoadBalancerController(kubeClient, "default", *domain, strings.Split(*nodes, ","))
go healthzServer()
go lbc.epController.Run(util.NeverStop)
go lbc.svcController.Run(util.NeverStop)
util.Until(lbc.worker, time.Second, util.NeverStop)
}
func (o *ObserveOptions) Run() error {
if len(o.deleteCommand) > 0 && len(o.nameSyncCommand) == 0 {
fmt.Fprintf(o.errOut, "warning: If you are modifying resources outside of %q, you should use the --names command to ensure you don't miss deletions that occur while the command is not running.\n", o.mapping.Resource)
}
// watch the given resource for changes
store := cache.NewDeltaFIFO(objectArgumentsKeyFunc, nil, o.knownObjects)
lw := restListWatcher{Helper: resource.NewHelper(o.client, o.mapping)}
if !o.allNamespaces {
lw.namespace = o.namespace
}
// ensure any child processes are reaped if we are running as PID 1
proc.StartReaper()
// listen on the provided address for metrics
if len(o.listenAddr) > 0 {
prometheus.MustRegister(observeCounts)
prometheus.MustRegister(execDurations)
prometheus.MustRegister(nameExecDurations)
errWaitingForSync := fmt.Errorf("waiting for initial sync")
healthz.InstallHandler(http.DefaultServeMux, healthz.NamedCheck("ready", func(r *http.Request) error {
if !store.HasSynced() {
return errWaitingForSync
}
return nil
}))
http.Handle("/metrics", prometheus.Handler())
go func() {
glog.Fatalf("Unable to listen on %q: %v", o.listenAddr, http.ListenAndServe(o.listenAddr, nil))
}()
glog.V(2).Infof("Listening on %s at /metrics and /healthz", o.listenAddr)
}
// exit cleanly after a certain period
// lock guards the loop to ensure no child processes are running
var lock sync.Mutex
if o.exitAfterPeriod > 0 {
go func() {
<-time.After(o.exitAfterPeriod)
lock.Lock()
o.dumpMetrics()
fmt.Fprintf(o.errOut, "Shutting down after %s ...\n", o.exitAfterPeriod)
os.Exit(0)
}()
}
defer o.dumpMetrics()
// start the reflector
reflector := cache.NewNamedReflector("observer", lw, nil, store, o.resyncPeriod)
reflector.Run()
if o.once {
// wait until the reflector reports it has completed the initial list and the
// fifo has been populated
for len(reflector.LastSyncResourceVersion()) == 0 {
time.Sleep(50 * time.Millisecond)
}
// if the store is empty, there is nothing to sync
if store.HasSynced() && len(store.ListKeys()) == 0 {
fmt.Fprintf(o.errOut, "Nothing to sync, exiting immediately\n")
return nil
}
}
// process all changes that occur in the resource
syncing := false
for {
_, err := store.Pop(func(obj interface{}) error {
// if we failed to retrieve the list of keys, exit
if err := o.argumentStore.ListKeysError(); err != nil {
return fmt.Errorf("unable to list known keys: %v", err)
}
deltas := obj.(cache.Deltas)
for _, delta := range deltas {
lock.Lock()
// handle before and after observe notification
switch {
case !syncing && delta.Type == cache.Sync:
if err := o.startSync(); err != nil {
return err
}
syncing = true
case syncing && delta.Type != cache.Sync:
if err := o.finishSync(); err != nil {
return err
}
syncing = false
}
// require the user to provide a name function in order to get events beyond added / updated
if !syncing && o.knownObjects == nil && !(delta.Type == cache.Added || delta.Type == cache.Updated) {
continue
}
observeCounts.WithLabelValues(string(delta.Type)).Inc()
// calculate the arguments for the delta and then invoke any command
object, arguments, output, err := o.calculateArguments(delta)
if err != nil {
return err
}
if err := o.next(delta.Type, object, output, arguments); err != nil {
return err
}
lock.Unlock()
}
return nil
})
if err != nil {
return err
}
// if we only want to run once, exit here
if o.once && store.HasSynced() {
if syncing {
if err := o.finishSync(); err != nil {
return err
}
}
return nil
}
}
}
