Exemplo n.º 1
0
func (r *ResourceCollector) Start() {
	// Get the cgroup containers for kubelet and docker
	kubeletContainer, err := getContainerNameForProcess(kubeletProcessName, "")
	dockerContainer, err := getContainerNameForProcess(dockerProcessName, dockerPidFile)
	if err == nil {
		systemContainers = map[string]string{
			stats.SystemContainerKubelet: kubeletContainer,
			stats.SystemContainerRuntime: dockerContainer,
		}
	} else {
		framework.Failf("Failed to get docker container name in test-e2e-node resource collector.")
	}

	wait.Poll(1*time.Second, 1*time.Minute, func() (bool, error) {
		var err error
		r.client, err = cadvisorclient.NewClient(fmt.Sprintf("http://localhost:%d/", cadvisorPort))
		if err == nil {
			return true, nil
		}
		return false, err
	})

	Expect(r.client).NotTo(BeNil(), "cadvisor client not ready")

	r.request = &cadvisorapiv2.RequestOptions{IdType: "name", Count: 1, Recursive: false}
	r.stopCh = make(chan struct{})

	oldStatsMap := make(map[string]*cadvisorapiv2.ContainerStats)
	go wait.Until(func() { r.collectStats(oldStatsMap) }, r.pollingInterval, r.stopCh)
}
Exemplo n.º 2
0
// Gets a v2 client to the cAdvisor being tested.
func (self *realFramework) ClientV2() *v2.Client {
	if self.cadvisorClientV2 == nil {
		cadvisorClientV2, err := v2.NewClient(self.Hostname().FullHostname())
		if err != nil {
			self.t.Fatalf("Failed to instantiate the cAdvisor client: %v", err)
		}
		self.cadvisorClientV2 = cadvisorClientV2
	}
	return self.cadvisorClientV2
}
Exemplo n.º 3
0
// Update node information by CAdvisor
func (core *Core) updateNodesByCAdvisor() {
	for _, node := range core.GetAllNodes() {
		if node.Host != "" {
			client, err := client.NewClient("http://" + node.Host + ":" + core.GetAgentLisenPort())
			if err != nil {
				log.Errorf("Cannot connect to cadvisor agent: %v", err)
				node.DockerDaemonHealth = registry.DockerDaemonDown
				continue
			}

			node.DockerDaemonHealth = registry.DockerDaemonUp
			// Fetch software versions and hardware information
			// One node fetches just one time
			if !node.MachineInfoFetched {
				attributes, err := client.Attributes()
				if err != nil {
					log.Errorf("Fetch machine info failed: %v", err)
					continue
				}
				node.NumCores = attributes.NumCores
				node.KernelVersion = attributes.KernelVersion
				node.CPUFrequency = attributes.CpuFrequency
				node.ContainerOsVersion = attributes.ContainerOsVersion
				node.DockerVersion = attributes.DockerVersion
				node.MemoryCapacity = attributes.MemoryCapacity
				node.MachineInfoFetched = true
			}

			request := info.RequestOptions{
				IdType:    "docker",
				Count:     5,
				Recursive: true,
			}
			containerInfo, err := client.Stats("", &request)
			if err != nil {
				log.Errorf("Fetch container info failed: %v", err)
			}

			node.Containers = make([]string, 0, len(containerInfo))
			for container, info := range containerInfo {
				node.Containers = append(node.Containers, container)
				if len(info.Stats) > 1 {
					lastStats := info.Stats[len(info.Stats)-2]
					currentStats := info.Stats[len(info.Stats)-1]

					// ms -> ns.
					timeInterval := float64((currentStats.Timestamp.Unix() - lastStats.Timestamp.Unix()) * 1000000)
					node.CPUUsage = float64(currentStats.Cpu.Usage.Total-lastStats.Cpu.Usage.Total) / timeInterval
					node.MemoryUsage = currentStats.Memory.Usage
					node.LastUpdateTime = time.Now().Unix()
				}
			}
		}
	}
}
Exemplo n.º 4
0
func (core *Core) updateTasksByCAdvisor() {
	for _, task := range core.GetAllTasks() {
		if task.State == "TASK_RUNNING" && task.DockerID != "" && task.SlaveID != "" {
			node, _ := core.GetNode(task.SlaveID)
			client, err := client.NewClient("http://" + node.Host + ":" + core.GetAgentLisenPort())
			if err != nil {
				log.Errorf("Cannot connect to cadvisor agent: %v", err)
				continue
			}

			request := info.RequestOptions{
				IdType: "docker",
				Count:  15,
			}
			containerInfo, err := client.Stats(task.DockerID, &request)
			if err != nil {
				log.Errorf("Fetch container info failed: %v", err)
			}

			var cpuStats []*registry.Usage
			var memoryStats []*registry.Usage
			for _, containerInfo := range containerInfo {
				for _, containerStats := range containerInfo.Stats {
					cpuStats = append(cpuStats, &registry.Usage{
						Total:     containerStats.Cpu.Usage.Total,
						Timestamp: containerStats.Timestamp,
					})
					memoryStats = append(memoryStats, &registry.Usage{
						Total:     containerStats.Memory.Usage,
						Timestamp: containerStats.Timestamp,
					})
				}
			}
			task.CPUUsage = cpuStats
			task.MemoryUsage = memoryStats
		}
		task.LastUpdateTime = time.Now().Unix()
	}
}