Golang unversioned.NewInCluster函数代码示例

func main() {
	flags.Parse(os.Args)

	if *defaultSvc == "" {
		glog.Fatalf("Please specify --default-backend")
	}

	kubeClient, err := unversioned.NewInCluster()
	if err != nil {
		glog.Fatalf("failed to create client: %v", err)
	}

	lbInfo, _ := getLBDetails(kubeClient)
	defSvc := getService(kubeClient, *defaultSvc)
	defError := getService(kubeClient, *customErrorSvc)

	// Start loadbalancer controller
	lbc, err := NewLoadBalancerController(kubeClient, *resyncPeriod, defSvc, defError, *watchNamespace, lbInfo)
	if err != nil {
		glog.Fatalf("%v", err)
	}

	lbc.Run()

	for {
		glog.Infof("Handled quit, awaiting pod deletion.")
		time.Sleep(30 * time.Second)
	}
}

func main() {
	clientConfig := kubectl_util.DefaultClientConfig(flags)
	flags.Parse(os.Args)
	cfg := parseCfg(*config, *lbDefAlgorithm)

	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)

	var tcpSvcs map[string]int
	if *tcpServices != "" {
		tcpSvcs = parseTCPServices(*tcpServices)
	} else {
		glog.Infof("No tcp/https services specified")
	}

	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.NamespaceAll
	}

	// TODO: Handle multiple namespaces
	lbc := newLoadBalancerController(cfg, kubeClient, namespace, tcpSvcs)
	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() {
	kubeClient, err := client.NewInCluster()
	if err != nil {
		log.Fatalf("Failed to create client: %v", err)
	}
	listAll := api.ListOptions{LabelSelector: labels.Everything(), FieldSelector: fields.Everything()}
	nodes, err := kubeClient.Nodes().List(listAll)
	if err != nil {
		log.Fatalf("Failed to list nodes: %v", err)
	}
	log.Printf("Nodes:")
	for _, node := range nodes.Items {
		log.Printf("\t%v", node.Name)
	}
	services, err := kubeClient.Services(api.NamespaceDefault).List(listAll)
	if err != nil {
		log.Fatalf("Failed to list services: %v", err)
	}
	log.Printf("Services:")
	for _, svc := range services.Items {
		log.Printf("\t%v", svc.Name)
	}
	log.Printf("Success")
	http.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
		fmt.Fprintf(w, "Ok")
	})
	log.Fatal(http.ListenAndServe(":8080", nil))
}

// Run runs the git-receive hook. This func is effectively the main for the git-receive hook,
// although it is called from the main in boot.go.
func Run(conf *Config, fs sys.FS, env sys.Env, storageDriver storagedriver.StorageDriver) error {
	log.Debug("Running git hook")

	builderKey, err := builderconf.GetBuilderKey()
	if err != nil {
		return err
	}

	kubeClient, err := client.NewInCluster()
	if err != nil {
		return fmt.Errorf("couldn't reach the api server (%s)", err)
	}

	scanner := bufio.NewScanner(os.Stdin)
	for scanner.Scan() {
		line := scanner.Text()
		oldRev, newRev, refName, err := readLine(line)

		if err != nil {
			return fmt.Errorf("reading STDIN (%s)", err)
		}

		log.Debug("read [%s,%s,%s]", oldRev, newRev, refName)

		// if we're processing a receive-pack on an existing repo, run a build
		if strings.HasPrefix(conf.SSHOriginalCommand, "git-receive-pack") {
			if err := build(conf, storageDriver, kubeClient, fs, env, builderKey, newRev); err != nil {
				return err
			}
		}
	}

	return scanner.Err()
}

func main() {
	var ingClient client.IngressInterface
	if kubeClient, err := client.NewInCluster(); err != nil {
		log.Fatalf("Failed to create client: %v.", err)
	} else {
		ingClient = kubeClient.Extensions().Ingress(os.Getenv("INGRESS_NAMESPACE"))
	}
	tmpl, _ := template.New("haproxy").Parse(haproxyConf)
	rateLimiter := util.NewTokenBucketRateLimiter(0.1, 1)
	known := &extensions.IngressList{}

	// Controller loop
	shellOut("haproxy -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy-private.pid")
	for {
		rateLimiter.Accept()
		ingresses, err := ingClient.List(api.ListOptions{})
		if err != nil {
			log.Printf("Error retrieving ingresses: %v", err)
			continue
		}
		if reflect.DeepEqual(ingresses.Items, known.Items) {
			log.Printf("Nothing Has Changed")
			continue
		}
		known = ingresses
		if w, err := os.Create("/etc/haproxy/haproxy.cfg"); err != nil {
			log.Fatalf("Failed to open %v: %v", haproxyConf, err)
			defer w.Close()
		} else if err := tmpl.Execute(w, ingresses); err != nil {
			log.Fatalf("Failed to write template %v", err)
		}
		restartHaproxy("haproxy_reload")
	}
}

// Find all sibling pods in the service and post to their /write handler.
func contactOthers(state *State) {
	const waitTimeout = 2 * time.Minute
	defer state.doneContactingPeers()
	client, err := client.NewInCluster()
	if err != nil {
		log.Fatalf("Unable to create client; error: %v\n", err)
	}
	// Double check that that worked by getting the server version.
	if v, err := client.Discovery().ServerVersion(); err != nil {
		log.Fatalf("Unable to get server version: %v\n", err)
	} else {
		log.Printf("Server version: %#v\n", v)
	}

	for start := time.Now(); time.Since(start) < waitTimeout; time.Sleep(5 * time.Second) {
		eps := getWebserverEndpoints(client)
		if eps.Len() >= *peerCount {
			break
		}
		state.Logf("%v/%v has %v endpoints, which is less than %v as expected. Waiting for all endpoints to come up.", *namespace, *service, len(eps), *peerCount)
	}

	// Do this repeatedly, in case there's some propagation delay with getting
	// newly started pods into the endpoints list.
	for i := 0; i < 15; i++ {
		eps := getWebserverEndpoints(client)
		for ep := range eps {
			state.Logf("Attempting to contact %s", ep)
			contactSingle(ep, state)
		}
		time.Sleep(5 * time.Second)
	}
}

func main() {
	var ingClient client.IngressInterface
	if kubeClient, err := client.NewInCluster(); err != nil {
		log.Fatalf("Failed to create client: %v.", err)
	} else {
		ingClient = kubeClient.Extensions().Ingress(api.NamespaceAll)
	}
	tmpl, _ := template.New("nginx").Parse(nginxConf)
	rateLimiter := util.NewTokenBucketRateLimiter(0.1, 1)
	known := &extensions.IngressList{}

	// Controller loop
	shellOut("nginx")
	for {
		rateLimiter.Accept()
		ingresses, err := ingClient.List(labels.Everything(), fields.Everything())
		if err != nil || reflect.DeepEqual(ingresses.Items, known.Items) {
			continue
		}
		known = ingresses
		if w, err := os.Create("/etc/nginx/nginx.conf"); err != nil {
			log.Fatalf("Failed to open %v: %v", nginxConf, err)
		} else if err := tmpl.Execute(w, ingresses); err != nil {
			log.Fatalf("Failed to write template %v", err)
		}
		shellOut("nginx -s reload")
	}
}

func main() {
	nginx.Start()
	kubeClient, err := client.NewInCluster()
	if err != nil {
		log.Fatalf("Failed to create client: %v.", err)
	}
	rateLimiter := util.NewTokenBucketRateLimiter(0.1, 1)
	known := &model.RouterConfig{}
	// Main loop
	for {
		rateLimiter.Accept()
		routerConfig, err := model.Build(kubeClient)
		if err != nil {
			log.Printf("Error building model; not modifying certs or configuration: %v.", err)
			continue
		}
		if reflect.DeepEqual(routerConfig, known) {
			continue
		}
		log.Println("INFO: Router configuration has changed in k8s.")
		err = nginx.WriteCerts(routerConfig, "/opt/nginx/ssl")
		if err != nil {
			log.Printf("Failed to write certs; continuing with existing certs and configuration: %v", err)
			continue
		}
		err = nginx.WriteConfig(routerConfig, "/opt/nginx/conf/nginx.conf")
		if err != nil {
			log.Printf("Failed to write new nginx configuration; continuing with existing configuration: %v", err)
			continue
		}
		nginx.Reload()
		known = routerConfig
	}
}

func runJoinCluster(cmd *cobra.Command, args []string) error {
	cli, err := client.NewInCluster()
	if err != nil {
		return fmt.Errorf("unable to connect k8s api server: %v", err)
	}

	labelSelector, err := labels.Parse(influxSelectors)
	if err != nil {
		return fmt.Errorf("unable to parse labels: %v", err)

	}
	fieldSelector := fields.Everything()
	podIPs, err := podIps(cli, labelSelector, fieldSelector)

	if err != nil {
		return err
	}

	hostIP, err := externalIP()
	if err != nil {
		return err
	}
	peers := influxdbPeers(hostIP, podIPs)
	iOpts := influxdOpts(hostIP, peers)

	if err := ioutil.WriteFile(envVarFile, []byte(iOpts), 0644); err != nil {
		return err
	}
	return nil
}

func (fs Filesystem) checksyncstatus(path string) error {
	path = strings.TrimPrefix(path, "/home/minio")
	path = "mnt/minio/data" + path
	var lock sync.RWMutex
	nosync := make(map[string]bool)
	kubeClient, err := client.NewInCluster()
	if err != nil {
		return fmt.Errorf("unable to create client")
	}
	pclient := kubeClient.Pods("default")
	selector, _ := labels.Parse("app=minio-sync")
	list, err := pclient.List(selector, nil)
	if err != nil {
		return fmt.Errorf("list pods failed")
	}
	for _, pod := range list.Items {
		fmt.Println(pod.Status.PodIP)
		if pod.Status.Phase == "Running" {
			nosync[pod.Status.PodIP] = false
		}
	}
	allsync := true
	var duration float64
	for duration = 1; duration < 60; duration++ {
		timeperiod := time.Duration(time.Second * time.Duration(duration))
		fmt.Println(timeperiod)
		time.Sleep(timeperiod)
		var wg sync.WaitGroup
		wg.Add(len(nosync))
		for ip, sync := range nosync {
			go func(ip string, sync bool) {
				if !sync {
					if doCurl("http://" + ip + ":3000/" + path) {
						lock.Lock()
						nosync[ip] = true
						lock.Unlock()
					} else {
						if allsync {
							allsync = false
						}
					}
				}
				wg.Done()
			}(ip, sync)
		}
		wg.Wait()
		if allsync {
			break
		}
		allsync = true
	}
	for _, sync := range nosync {
		if !sync {
			return fmt.Errorf("sync failed took more time ")
		}
	}
	return nil

}

func main() {
	var ingClient client.IngressInterface
	var secretsClient client.SecretsInterface
	/* Anon http client
	config := client.Config{
		Host:     "http://localhost:8080",
		Username: "admin",
		Password: "admin",
	}
	kubeClient, err := client.New(&config)
	*/
	kubeClient, err := client.NewInCluster()
	if err != nil {
		log.Fatalf("Failed to create client: %v.", err)
	} else {
		ingClient = kubeClient.Extensions().Ingress(api.NamespaceAll)
		secretsClient = kubeClient.Secrets(api.NamespaceAll)
	}
	tmpl := template.New("nginx.tmpl").Funcs(template.FuncMap{"hasprefix": hasPrefix, "hassuffix": hasSuffix})
	if _, err := tmpl.ParseFiles("./nginx.tmpl"); err != nil {
		log.Fatalf("Failed to parse template %v", err)
	}

	rateLimiter := util.NewTokenBucketRateLimiter(0.1, 1)
	known := &extensions.IngressList{}
	known_secrets := &api.SecretList{}

	// Controller loop
	shellOut("nginx")
	for {
		rateLimiter.Accept()
		ingresses, err := ingClient.List(api.ListOptions{})
		if err != nil {
			log.Printf("Error retrieving ingresses: %v", err)
			continue
		}
		secrets, err := secretsClient.List(api.ListOptions{})
		if err != nil {
			log.Printf("Error retrieving secrets: %v", err)
			continue
		}
		if reflect.DeepEqual(ingresses.Items, known.Items) && reflect.DeepEqual(secrets.Items, known_secrets.Items) {
			continue
		}
		// Process SSL context
		// old values
		known = ingresses
		known_secrets = secrets
		// context variable
		context := &Context{Ingress: ingresses, Secrets: secrets}
		if w, err := os.Create("/etc/nginx/nginx.conf"); err != nil {
			log.Fatalf("Failed to open %v: %v", err)
		} else if err := tmpl.Execute(w, context); err != nil {
			log.Fatalf("Failed to write template %v", err)
		}
		shellOut("nginx -s reload")
	}
}

func main() {
	var kubeClient *unversioned.Client
	flags.AddGoFlagSet(flag.CommandLine)
	flags.Parse(os.Args)
	clientConfig := kubectl_util.DefaultClientConfig(flags)

	glog.Infof("Using build: %v - %v", gitRepo, version)

	if *buildCfg {
		fmt.Printf("Example of ConfigMap to customize NGINX configuration:\n%v", nginx.ConfigMapAsString())
		os.Exit(0)
	}

	if *defaultSvc == "" {
		glog.Fatalf("Please specify --default-backend-service")
	}

	var err error
	if *inCluster {
		kubeClient, err = unversioned.NewInCluster()
	} else {
		config, connErr := clientConfig.ClientConfig()
		if connErr != nil {
			glog.Fatalf("error connecting to the client: %v", err)
		}
		kubeClient, err = unversioned.New(config)
	}
	if err != nil {
		glog.Fatalf("failed to create client: %v", err)
	}

	runtimePodInfo := &podInfo{NodeIP: "127.0.0.1"}
	if *inCluster {
		runtimePodInfo, err = getPodDetails(kubeClient)
		if err != nil {
			glog.Fatalf("unexpected error getting runtime information: %v", err)
		}
	}
	if err := isValidService(kubeClient, *defaultSvc); err != nil {
		glog.Fatalf("no service with name %v found: %v", *defaultSvc, err)
	}
	glog.Infof("Validated %v as the default backend", *defaultSvc)

	lbc, err := newLoadBalancerController(kubeClient, *resyncPeriod, *defaultSvc, *watchNamespace, *nxgConfigMap, *tcpConfigMapName, *udpConfigMapName, runtimePodInfo)
	if err != nil {
		glog.Fatalf("%v", err)
	}

	go registerHandlers(lbc)
	go handleSigterm(lbc)

	lbc.Run()

	for {
		glog.Infof("Handled quit, awaiting pod deletion")
		time.Sleep(30 * time.Second)
	}
}

func main() {
	flag.Parse()
	glog.Info("Kubernetes Elasticsearch logging discovery")

	c, err := client.NewInCluster()
	if err != nil {
		glog.Fatalf("Failed to make client: %v", err)
	}
	namespace := api.NamespaceSystem
	envNamespace := os.Getenv("NAMESPACE")
	if envNamespace != "" {
		if _, err := c.Namespaces().Get(envNamespace); err != nil {
			glog.Fatalf("%s namespace doesn't exist: %v", envNamespace, err)
		}
		namespace = envNamespace
	}

	var elasticsearch *api.Service
	// Look for endpoints associated with the Elasticsearch loggging service.
	// First wait for the service to become available.
	for t := time.Now(); time.Since(t) < 5*time.Minute; time.Sleep(10 * time.Second) {
		elasticsearch, err = c.Services(namespace).Get("elasticsearch-logging")
		if err == nil {
			break
		}
	}
	// If we did not find an elasticsearch logging service then log a warning
	// and return without adding any unicast hosts.
	if elasticsearch == nil {
		glog.Warningf("Failed to find the elasticsearch-logging service: %v", err)
		return
	}

	var endpoints *api.Endpoints
	addrs := []string{}
	// Wait for some endpoints.
	count := 0
	for t := time.Now(); time.Since(t) < 5*time.Minute; time.Sleep(10 * time.Second) {
		endpoints, err = c.Endpoints(namespace).Get("elasticsearch-logging")
		if err != nil {
			continue
		}
		addrs = flattenSubsets(endpoints.Subsets)
		glog.Infof("Found %s", addrs)
		if len(addrs) > 0 && len(addrs) == count {
			break
		}
		count = len(addrs)
	}
	// If there was an error finding endpoints then log a warning and quit.
	if err != nil {
		glog.Warningf("Error finding endpoints: %v", err)
		return
	}

	glog.Infof("Endpoints = %s", addrs)
	fmt.Printf("discovery.zen.ping.unicast.hosts: [%s]\n", strings.Join(addrs, ", "))
}

func main() {
	flags.AddGoFlagSet(flag.CommandLine)
	flags.Parse(os.Args)
	clientConfig := kubectl_util.DefaultClientConfig(flags)

	glog.Infof("Using build: %v - %v", gitRepo, version)

	if *defaultSvc == "" {
		glog.Fatalf("Please specify --default-backend-service")
	}

	kubeClient, err := unversioned.NewInCluster()
	if err != nil {
		config, err := clientConfig.ClientConfig()
		if err != nil {
			glog.Fatalf("error configuring the client: %v", err)
		}
		kubeClient, err = unversioned.New(config)
		if err != nil {
			glog.Fatalf("failed to create client: %v", err)
		}
	}

	runtimePodInfo, err := getPodDetails(kubeClient)
	if err != nil {
		runtimePodInfo = &podInfo{NodeIP: "127.0.0.1"}
		glog.Warningf("unexpected error getting runtime information: %v", err)
	}
	if err := isValidService(kubeClient, *defaultSvc); err != nil {
		glog.Fatalf("no service with name %v found: %v", *defaultSvc, err)
	}
	glog.Infof("Validated %v as the default backend", *defaultSvc)

	if *nxgConfigMap != "" {
		_, _, err = parseNsName(*nxgConfigMap)
		if err != nil {
			glog.Fatalf("configmap error: %v", err)
		}
	}

	lbc, err := newLoadBalancerController(kubeClient, *resyncPeriod,
		*defaultSvc, *watchNamespace, *nxgConfigMap, *tcpConfigMapName,
		*udpConfigMapName, *defSSLCertificate, *defHealthzURL, runtimePodInfo)
	if err != nil {
		glog.Fatalf("%v", err)
	}

	go registerHandlers(lbc)
	go handleSigterm(lbc)

	lbc.Run()

	for {
		glog.Infof("Handled quit, awaiting pod deletion")
		time.Sleep(30 * time.Second)
	}
}

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)
	}

	err = resetIPVS()
	if err != nil {
		glog.Fatalf("Terminating execution: %v", err)
	}

	glog.Info("starting LVS configuration")
	if *useUnicast {
		glog.Info("keepalived will use unicast to sync the nodes")
	}
	ipvsc := newIPVSController(kubeClient, namespace, *useUnicast, *password)
	go ipvsc.epController.Run(wait.NeverStop)
	go ipvsc.svcController.Run(wait.NeverStop)
	go wait.Until(ipvsc.worker, time.Second, wait.NeverStop)

	time.Sleep(5 * time.Second)
	glog.Info("starting keepalived to announce VIPs")
	ipvsc.keepalived.Start()
}