Пример #1
0
// getStartingConfig returns the Config object built from the sources specified by the options, the filename read (only if it was a single file), and an error if something goes wrong
func (o *ViewOptions) getStartingConfig() (*clientcmdapi.Config, error) {
	switch {
	case !o.Merge.Value():
		return clientcmd.LoadFromFile(o.ConfigAccess.GetExplicitFile())

	default:
		return o.ConfigAccess.GetStartingConfig()
	}
}
Пример #2
0
// getConfigFromFileOrDie tries to read a qingconfig file and if it can't, it calls exit.  One exception, missing files result in empty configs, not an exit
func getConfigFromFileOrDie(filename string) *clientcmdapi.Config {
	config, err := clientcmd.LoadFromFile(filename)
	if err != nil && !os.IsNotExist(err) {
		glog.FatalDepth(1, err)
	}

	if config == nil {
		return clientcmdapi.NewConfig()
	}

	return config
}
Пример #3
0
func main() {
	flag.Parse()

	glog.Infof("Starting serve_hostnames soak test with queries=%d and podsPerNode=%d upTo=%d",
		*queriesAverage, *podsPerNode, *upTo)

	var spec string
	if *gke != "" {
		spec = filepath.Join(os.Getenv("HOME"), ".config", "gcloud", "qingyuan", "qingconfig")
	} else {
		spec = filepath.Join(os.Getenv("HOME"), ".qing", "config")
	}
	settings, err := clientcmd.LoadFromFile(spec)
	if err != nil {
		glog.Fatalf("Error loading configuration: %v", err.Error())
	}
	if *gke != "" {
		settings.CurrentContext = *gke
	}
	config, err := clientcmd.NewDefaultClientConfig(*settings, &clientcmd.ConfigOverrides{}).ClientConfig()
	if err != nil {
		glog.Fatalf("Failed to construct config: %v", err)
	}

	c, err := client.New(config)
	if err != nil {
		glog.Fatalf("Failed to make client: %v", err)
	}

	var nodes *api.NodeList
	for start := time.Now(); time.Since(start) < nodeListTimeout; time.Sleep(2 * time.Second) {
		nodes, err = c.Nodes().List(labels.Everything(), fields.Everything())
		if err == nil {
			break
		}
		glog.Warningf("Failed to list nodes: %v", err)
	}
	if err != nil {
		glog.Fatalf("Giving up trying to list nodes: %v", err)
	}

	if len(nodes.Items) == 0 {
		glog.Fatalf("Failed to find any nodes.")
	}

	glog.Infof("Found %d nodes on this cluster:", len(nodes.Items))
	for i, node := range nodes.Items {
		glog.Infof("%d: %s", i, node.Name)
	}

	queries := *queriesAverage * len(nodes.Items) * *podsPerNode

	// Create the namespace
	got, err := c.Namespaces().Create(&api.Namespace{ObjectMeta: api.ObjectMeta{GenerateName: "serve-hostnames-"}})
	if err != nil {
		glog.Fatalf("Failed to create namespace: %v", err)
	}
	ns := got.Name
	defer func(ns string) {
		if err := c.Namespaces().Delete(ns); err != nil {
			glog.Warningf("Failed to delete namespace ns: %e", ns, err)
		}
	}(ns)
	glog.Infof("Created namespace %s", ns)

	// Create a service for these pods.
	glog.Infof("Creating service %s/serve-hostnames", ns)
	// Make several attempts to create a service.
	var svc *api.Service
	for start := time.Now(); time.Since(start) < serviceCreateTimeout; time.Sleep(2 * time.Second) {
		t := time.Now()
		svc, err = c.Services(ns).Create(&api.Service{
			ObjectMeta: api.ObjectMeta{
				Name: "serve-hostnames",
				Labels: map[string]string{
					"name": "serve-hostname",
				},
			},
			Spec: api.ServiceSpec{
				Ports: []api.ServicePort{{
					Protocol:   "TCP",
					Port:       9376,
					TargetPort: util.NewIntOrStringFromInt(9376),
				}},
				Selector: map[string]string{
					"name": "serve-hostname",
				},
			},
		})
		glog.V(4).Infof("Service create %s/server-hostnames took %v", ns, time.Since(t))
		if err == nil {
			break
		}
		glog.Warningf("After %v failed to create service %s/serve-hostnames: %v", time.Since(start), ns, err)
	}
	if err != nil {
		glog.Warningf("Unable to create service %s/%s: %v", ns, svc.Name, err)
		return
	}
	// Clean up service
	defer func() {
		glog.Infof("Cleaning up service %s/serve-hostnames", ns)
		// Make several attempts to delete the service.
		for start := time.Now(); time.Since(start) < deleteTimeout; time.Sleep(1 * time.Second) {
			if err := c.Services(ns).Delete(svc.Name); err == nil {
				return
			}
			glog.Warningf("After %v unable to delete service %s/%s: %v", time.Since(start), ns, svc.Name, err)
		}
	}()

	// Put serve-hostname pods on each node.
	podNames := []string{}
	for i, node := range nodes.Items {
		for j := 0; j < *podsPerNode; j++ {
			podName := fmt.Sprintf("serve-hostname-%d-%d", i, j)
			podNames = append(podNames, podName)
			// Make several attempts
			for start := time.Now(); time.Since(start) < podCreateTimeout; time.Sleep(2 * time.Second) {
				glog.Infof("Creating pod %s/%s on node %s", ns, podName, node.Name)
				t := time.Now()
				_, err = c.Pods(ns).Create(&api.Pod{
					ObjectMeta: api.ObjectMeta{
						Name: podName,
						Labels: map[string]string{
							"name": "serve-hostname",
						},
					},
					Spec: api.PodSpec{
						Containers: []api.Container{
							{
								Name:  "serve-hostname",
								Image: "qingyuan/serve_hostname:1.1",
								Ports: []api.ContainerPort{{ContainerPort: 9376}},
							},
						},
						NodeName: node.Name,
					},
				})
				glog.V(4).Infof("Pod create %s/%s request took %v", ns, podName, time.Since(t))
				if err == nil {
					break
				}
				glog.Warningf("After %s failed to create pod %s/%s: %v", time.Since(start), ns, podName, err)
			}
			if err != nil {
				glog.Warningf("Failed to create pod %s/%s: %v", ns, podName, err)
				return
			}
		}
	}
	// Clean up the pods
	defer func() {
		glog.Info("Cleaning up pods")
		// Make several attempts to delete the pods.
		for _, podName := range podNames {
			for start := time.Now(); time.Since(start) < deleteTimeout; time.Sleep(1 * time.Second) {
				if err = c.Pods(ns).Delete(podName, nil); err == nil {
					break
				}
				glog.Warningf("After %v failed to delete pod %s/%s: %v", time.Since(start), ns, podName, err)
			}
		}
	}()

	glog.Info("Waiting for the serve-hostname pods to be ready")
	for _, podName := range podNames {
		var pod *api.Pod
		for start := time.Now(); time.Since(start) < podStartTimeout; time.Sleep(5 * time.Second) {
			pod, err = c.Pods(ns).Get(podName)
			if err != nil {
				glog.Warningf("Get pod %s/%s failed, ignoring for %v: %v", ns, podName, err, podStartTimeout)
				continue
			}
			if pod.Status.Phase == api.PodRunning {
				break
			}
		}
		if pod.Status.Phase != api.PodRunning {
			glog.Warningf("Gave up waiting on pod %s/%s to be running (saw %v)", ns, podName, pod.Status.Phase)
		} else {
			glog.Infof("%s/%s is running", ns, podName)
		}
	}

	// Wait for the endpoints to propagate.
	for start := time.Now(); time.Since(start) < endpointTimeout; time.Sleep(10 * time.Second) {
		hostname, err := c.Get().
			Namespace(ns).
			Prefix("proxy").
			Resource("services").
			Name("serve-hostnames").
			DoRaw()
		if err != nil {
			glog.Infof("After %v while making a proxy call got error %v", time.Since(start), err)
			continue
		}
		var r api.Status
		if err := api.Scheme.DecodeInto(hostname, &r); err != nil {
			break
		}
		if r.Status == api.StatusFailure {
			glog.Infof("After %v got status %v", time.Since(start), string(hostname))
			continue
		}
		break
	}

	// Repeatedly make requests.
	for iteration := 0; iteration != *upTo; iteration++ {
		responseChan := make(chan string, queries)
		// Use a channel of size *maxPar to throttle the number
		// of in-flight requests to avoid overloading the service.
		inFlight := make(chan struct{}, *maxPar)
		start := time.Now()
		for q := 0; q < queries; q++ {
			go func(i int, query int) {
				inFlight <- struct{}{}
				t := time.Now()
				hostname, err := c.Get().
					Namespace(ns).
					Prefix("proxy").
					Resource("services").
					Name("serve-hostnames").
					DoRaw()
				glog.V(4).Infof("Proxy call in namespace %s took %v", ns, time.Since(t))
				if err != nil {
					glog.Warningf("Call failed during iteration %d query %d : %v", i, query, err)
					// If the query failed return a string which starts with a character
					// that can't be part of a hostname.
					responseChan <- fmt.Sprintf("!failed in iteration %d to issue query %d: %v", i, query, err)
				} else {
					responseChan <- string(hostname)
				}
				<-inFlight
			}(iteration, q)
		}
		responses := make(map[string]int, *podsPerNode*len(nodes.Items))
		missing := 0
		for q := 0; q < queries; q++ {
			r := <-responseChan
			glog.V(4).Infof("Got response from %s", r)
			responses[r]++
			// If the returned hostname starts with '!' then it indicates
			// an error response.
			if len(r) > 0 && r[0] == '!' {
				glog.V(3).Infof("Got response %s", r)
				missing++
			}
		}
		if missing > 0 {
			glog.Warningf("Missing %d responses out of %d", missing, queries)
		}
		// Report any nodes that did not respond.
		for n, node := range nodes.Items {
			for i := 0; i < *podsPerNode; i++ {
				name := fmt.Sprintf("serve-hostname-%d-%d", n, i)
				if _, ok := responses[name]; !ok {
					glog.Warningf("No response from pod %s on node %s at iteration %d", name, node.Name, iteration)
				}
			}
		}
		glog.Infof("Iteration %d took %v for %d queries (%.2f QPS) with %d missing",
			iteration, time.Since(start), queries-missing, float64(queries-missing)/time.Since(start).Seconds(), missing)
	}
}