Golang cadvisor.CapacityFromMachineInfo函數代碼示例

func (kl *Kubelet) setNodeStatusMachineInfo(node *api.Node) {
	// TODO: Post NotReady if we cannot get MachineInfo from cAdvisor. This needs to start
	// cAdvisor locally, e.g. for test-cmd.sh, and in integration test.
	info, err := kl.GetCachedMachineInfo()
	if err != nil {
		// TODO(roberthbailey): This is required for test-cmd.sh to pass.
		// See if the test should be updated instead.
		node.Status.Capacity = api.ResourceList{
			api.ResourceCPU:       *resource.NewMilliQuantity(0, resource.DecimalSI),
			api.ResourceMemory:    resource.MustParse("0Gi"),
			api.ResourcePods:      *resource.NewQuantity(int64(kl.maxPods), resource.DecimalSI),
			api.ResourceNvidiaGPU: *resource.NewQuantity(int64(kl.nvidiaGPUs), resource.DecimalSI),
		}
		glog.Errorf("Error getting machine info: %v", err)
	} else {
		node.Status.NodeInfo.MachineID = info.MachineID
		node.Status.NodeInfo.SystemUUID = info.SystemUUID
		node.Status.Capacity = cadvisor.CapacityFromMachineInfo(info)
		if kl.podsPerCore > 0 {
			node.Status.Capacity[api.ResourcePods] = *resource.NewQuantity(
				int64(math.Min(float64(info.NumCores*kl.podsPerCore), float64(kl.maxPods))), resource.DecimalSI)
		} else {
			node.Status.Capacity[api.ResourcePods] = *resource.NewQuantity(
				int64(kl.maxPods), resource.DecimalSI)
		}
		node.Status.Capacity[api.ResourceNvidiaGPU] = *resource.NewQuantity(
			int64(kl.nvidiaGPUs), resource.DecimalSI)
		if node.Status.NodeInfo.BootID != "" &&
			node.Status.NodeInfo.BootID != info.BootID {
			// TODO: This requires a transaction, either both node status is updated
			// and event is recorded or neither should happen, see issue #6055.
			kl.recorder.Eventf(kl.nodeRef, api.EventTypeWarning, events.NodeRebooted,
				"Node %s has been rebooted, boot id: %s", kl.nodeName, info.BootID)
		}
		node.Status.NodeInfo.BootID = info.BootID
	}

	// Set Allocatable.
	node.Status.Allocatable = make(api.ResourceList)
	for k, v := range node.Status.Capacity {
		value := *(v.Copy())
		if kl.reservation.System != nil {
			value.Sub(kl.reservation.System[k])
		}
		if kl.reservation.Kubernetes != nil {
			value.Sub(kl.reservation.Kubernetes[k])
		}
		if value.Sign() < 0 {
			// Negative Allocatable resources don't make sense.
			value.Set(0)
		}
		node.Status.Allocatable[k] = value
	}
}

func (cm *containerManagerImpl) setupNode() error {
	f, err := validateSystemRequirements(cm.mountUtil)
	if err != nil {
		return err
	}
	if !f.cpuHardcapping {
		cm.status.SoftRequirements = fmt.Errorf("CPU hardcapping unsupported")
	}
	// TODO: plumb kernel tunable options into container manager, right now, we modify by default
	if err := setupKernelTunables(KernelTunableModify); err != nil {
		return err
	}

	systemContainers := []*systemContainer{}
	if cm.ContainerRuntime == "docker" {
		if cm.RuntimeCgroupsName != "" {
			cont := newSystemCgroups(cm.RuntimeCgroupsName)
			info, err := cm.cadvisorInterface.MachineInfo()
			var capacity = api.ResourceList{}
			if err != nil {
			} else {
				capacity = cadvisor.CapacityFromMachineInfo(info)
			}
			memoryLimit := (int64(capacity.Memory().Value() * DockerMemoryLimitThresholdPercent / 100))
			if memoryLimit < MinDockerMemoryLimit {
				glog.Warningf("Memory limit %d for container %s is too small, reset it to %d", memoryLimit, cm.RuntimeCgroupsName, MinDockerMemoryLimit)
				memoryLimit = MinDockerMemoryLimit
			}

			glog.V(2).Infof("Configure resource-only container %s with memory limit: %d", cm.RuntimeCgroupsName, memoryLimit)

			dockerContainer := &fs.Manager{
				Cgroups: &configs.Cgroup{
					Parent: "/",
					Name:   cm.RuntimeCgroupsName,
					Resources: &configs.Resources{
						Memory:          memoryLimit,
						MemorySwap:      -1,
						AllowAllDevices: true,
					},
				},
			}
			dockerVersion := getDockerVersion(cm.cadvisorInterface)
			cont.ensureStateFunc = func(manager *fs.Manager) error {
				return ensureDockerInContainer(dockerVersion, -900, dockerContainer)
			}
			systemContainers = append(systemContainers, cont)
		} else {
			cm.periodicTasks = append(cm.periodicTasks, func() {
				cont, err := getContainerNameForProcess(dockerProcessName, dockerPidFile)
				if err != nil {
					glog.Error(err)
					return
				}
				glog.V(2).Infof("Discovered runtime cgroups name: %s", cont)
				cm.Lock()
				defer cm.Unlock()
				cm.RuntimeCgroupsName = cont
			})
		}
	}

	if cm.SystemCgroupsName != "" {
		if cm.SystemCgroupsName == "/" {
			return fmt.Errorf("system container cannot be root (\"/\")")
		}
		cont := newSystemCgroups(cm.SystemCgroupsName)
		rootContainer := &fs.Manager{
			Cgroups: &configs.Cgroup{
				Parent: "/",
				Name:   "/",
			},
		}
		cont.ensureStateFunc = func(manager *fs.Manager) error {
			return ensureSystemCgroups(rootContainer, manager)
		}
		systemContainers = append(systemContainers, cont)
	}

	if cm.KubeletCgroupsName != "" {
		cont := newSystemCgroups(cm.KubeletCgroupsName)
		manager := fs.Manager{
			Cgroups: &configs.Cgroup{
				Parent: "/",
				Name:   cm.KubeletCgroupsName,
				Resources: &configs.Resources{
					AllowAllDevices: true,
				},
			},
		}
		cont.ensureStateFunc = func(_ *fs.Manager) error {
			return manager.Apply(os.Getpid())
		}
		systemContainers = append(systemContainers, cont)
	} else {
		cm.periodicTasks = append(cm.periodicTasks, func() {
			cont, err := getContainer(os.Getpid())
			if err != nil {
				glog.Errorf("failed to find cgroups of kubelet - %v", err)
				return
//.........這裏部分代碼省略.........

func (cm *containerManagerImpl) setupNode() error {
	f, err := validateSystemRequirements(cm.mountUtil)
	if err != nil {
		return err
	}
	if !f.cpuHardcapping {
		cm.status.SoftRequirements = fmt.Errorf("CPU hardcapping unsupported")
	}
	b := KernelTunableModify
	if cm.GetNodeConfig().ProtectKernelDefaults {
		b = KernelTunableError
	}
	if err := setupKernelTunables(b); err != nil {
		return err
	}

	// Setup top level qos containers only if CgroupsPerQOS flag is specified as true
	if cm.NodeConfig.CgroupsPerQOS {
		qosContainersInfo, err := InitQOS(cm.NodeConfig.CgroupDriver, cm.NodeConfig.CgroupRoot, cm.subsystems)
		if err != nil {
			return fmt.Errorf("failed to initialise top level QOS containers: %v", err)
		}
		cm.qosContainers = qosContainersInfo
	}

	systemContainers := []*systemContainer{}
	if cm.ContainerRuntime == "docker" {
		dockerVersion := getDockerVersion(cm.cadvisorInterface)
		if cm.EnableCRI {
			// If kubelet uses CRI, dockershim will manage the cgroups and oom
			// score for the docker processes.
			// In the future, NodeSpec should mandate the cgroup that the
			// runtime processes need to be in. For now, we still check the
			// cgroup for docker periodically, so that kubelet can recognize
			// the cgroup for docker and serve stats for the runtime.
			// TODO(#27097): Fix this after NodeSpec is clearly defined.
			cm.periodicTasks = append(cm.periodicTasks, func() {
				glog.V(4).Infof("[ContainerManager]: Adding periodic tasks for docker CRI integration")
				cont, err := getContainerNameForProcess(dockerProcessName, dockerPidFile)
				if err != nil {
					glog.Error(err)
					return
				}
				glog.V(2).Infof("[ContainerManager]: Discovered runtime cgroups name: %s", cont)
				cm.Lock()
				defer cm.Unlock()
				cm.RuntimeCgroupsName = cont
			})
		} else if cm.RuntimeCgroupsName != "" {
			cont := newSystemCgroups(cm.RuntimeCgroupsName)
			var capacity = api.ResourceList{}
			if info, err := cm.cadvisorInterface.MachineInfo(); err == nil {
				capacity = cadvisor.CapacityFromMachineInfo(info)
			}
			memoryLimit := (int64(capacity.Memory().Value() * DockerMemoryLimitThresholdPercent / 100))
			if memoryLimit < MinDockerMemoryLimit {
				glog.Warningf("Memory limit %d for container %s is too small, reset it to %d", memoryLimit, cm.RuntimeCgroupsName, MinDockerMemoryLimit)
				memoryLimit = MinDockerMemoryLimit
			}

			glog.V(2).Infof("Configure resource-only container %s with memory limit: %d", cm.RuntimeCgroupsName, memoryLimit)
			allowAllDevices := true
			dockerContainer := &fs.Manager{
				Cgroups: &configs.Cgroup{
					Parent: "/",
					Name:   cm.RuntimeCgroupsName,
					Resources: &configs.Resources{
						Memory:          memoryLimit,
						MemorySwap:      -1,
						AllowAllDevices: &allowAllDevices,
					},
				},
			}
			cont.ensureStateFunc = func(manager *fs.Manager) error {
				return EnsureDockerInContainer(dockerVersion, qos.DockerOOMScoreAdj, dockerContainer)
			}
			systemContainers = append(systemContainers, cont)
		} else {
			cm.periodicTasks = append(cm.periodicTasks, func() {
				glog.V(10).Infof("Adding docker daemon periodic tasks")
				if err := EnsureDockerInContainer(dockerVersion, qos.DockerOOMScoreAdj, nil); err != nil {
					glog.Error(err)
					return
				}
				cont, err := getContainerNameForProcess(dockerProcessName, dockerPidFile)
				if err != nil {
					glog.Error(err)
					return
				}
				glog.V(2).Infof("Discovered runtime cgroups name: %s", cont)
				cm.Lock()
				defer cm.Unlock()
				cm.RuntimeCgroupsName = cont
			})
		}
	}

	if cm.SystemCgroupsName != "" {
		if cm.SystemCgroupsName == "/" {
			return fmt.Errorf("system container cannot be root (\"/\")")
//.........這裏部分代碼省略.........

func (cm *containerManagerImpl) setupNode() error {
	if err := validateSystemRequirements(cm.mountUtil); err != nil {
		return err
	}

	// TODO: plumb kernel tunable options into container manager, right now, we modify by default
	if err := setupKernelTunables(KernelTunableModify); err != nil {
		return err
	}

	systemContainers := []*systemContainer{}
	if cm.DockerDaemonContainerName != "" {
		cont := newSystemContainer(cm.DockerDaemonContainerName)

		info, err := cm.cadvisorInterface.MachineInfo()
		var capacity = api.ResourceList{}
		if err != nil {
		} else {
			capacity = cadvisor.CapacityFromMachineInfo(info)
		}
		memoryLimit := (int64(capacity.Memory().Value() * DockerMemoryLimitThresholdPercent / 100))
		if memoryLimit < MinDockerMemoryLimit {
			glog.Warningf("Memory limit %d for container %s is too small, reset it to %d", memoryLimit, cm.DockerDaemonContainerName, MinDockerMemoryLimit)
			memoryLimit = MinDockerMemoryLimit
		}

		glog.V(2).Infof("Configure resource-only container %s with memory limit: %d", cm.DockerDaemonContainerName, memoryLimit)

		dockerContainer := &fs.Manager{
			Cgroups: &configs.Cgroup{
				Name:            cm.DockerDaemonContainerName,
				Memory:          memoryLimit,
				MemorySwap:      -1,
				AllowAllDevices: true,
			},
		}
		cont.ensureStateFunc = func(manager *fs.Manager) error {
			return ensureDockerInContainer(cm.cadvisorInterface, -900, dockerContainer)
		}
		systemContainers = append(systemContainers, cont)
	}

	if cm.SystemContainerName != "" {
		if cm.SystemContainerName == "/" {
			return fmt.Errorf("system container cannot be root (\"/\")")
		}

		rootContainer := &fs.Manager{
			Cgroups: &configs.Cgroup{
				Name: "/",
			},
		}
		manager := createManager(cm.SystemContainerName)

		err := ensureSystemContainer(rootContainer, manager)
		if err != nil {
			return err
		}
		systemContainers = append(systemContainers, newSystemContainer(cm.SystemContainerName))
	}

	if cm.KubeletContainerName != "" {
		systemContainers = append(systemContainers, newSystemContainer(cm.KubeletContainerName))
	}
	cm.systemContainers = systemContainers
	return nil
}