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Merge pull request #31847 from feiskyer/syncpod
Automatic merge from submit-queue Kubelet: add SyncPod for new runtime API This PR adds implements of `SyncPod` for new runtime API. Note that init containers is not included, it will in another following PR. **DO-NOT-MERGE**. Based on #31322 and #31395, only last commit is for review. CC @yujuhong @Random-Liu and @kubernetes/sig-node @kubernetes/sig-rktnetes
This commit is contained in:
Kubernetes Submit Queue
GitHub
commit
dfe3a46672
@ -40,6 +40,7 @@ var (
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ErrVerifyNonRoot = errors.New("VerifyNonRootError")
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ErrRunInitContainer = errors.New("RunInitContainerError")
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ErrCreatePodSandbox = errors.New("CreatePodSandboxError")
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ErrConfigPodSandbox = errors.New("ConfigPodSandboxError")
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ErrKillPodSandbox = errors.New("KillPodSandboxError")
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)
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@ -59,6 +60,7 @@ const (
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TeardownNetwork SyncAction = "TeardownNetwork"
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InitContainer SyncAction = "InitContainer"
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CreatePodSandbox SyncAction = "CreatePodSandbox"
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ConfigPodSandbox SyncAction = "ConfigPodSandbox"
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KillPodSandbox SyncAction = "KillPodSandbox"
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)
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@ -33,11 +33,84 @@ import (
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runtimeApi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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"k8s.io/kubernetes/pkg/kubelet/events"
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"k8s.io/kubernetes/pkg/kubelet/util/format"
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"k8s.io/kubernetes/pkg/types"
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utilruntime "k8s.io/kubernetes/pkg/util/runtime"
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"k8s.io/kubernetes/pkg/util/term"
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)
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// startContainer starts a container and returns a message indicates why it is failed on error.
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// It starts the container through the following steps:
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// * pull the image
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// * create the container
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// * start the container
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// * run the post start lifecycle hooks (if applicable)
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func (m *kubeGenericRuntimeManager) startContainer(podSandboxID string, podSandboxConfig *runtimeApi.PodSandboxConfig, container *api.Container, pod *api.Pod, podStatus *kubecontainer.PodStatus, pullSecrets []api.Secret, podIP string) (string, error) {
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// Step 1: pull the image.
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err, msg := m.imagePuller.EnsureImageExists(pod, container, pullSecrets)
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if err != nil {
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return msg, err
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}
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// Step 2: create the container.
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ref, err := kubecontainer.GenerateContainerRef(pod, container)
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if err != nil {
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glog.Errorf("Can't make a ref to pod %q, container %v: %v", format.Pod(pod), container.Name, err)
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}
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glog.V(4).Infof("Generating ref for container %s: %#v", container.Name, ref)
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// For a new container, the RestartCount should be 0
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restartCount := 0
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containerStatus := podStatus.FindContainerStatusByName(container.Name)
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if containerStatus != nil {
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restartCount = containerStatus.RestartCount + 1
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}
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containerConfig, err := m.generateContainerConfig(container, pod, restartCount, podIP)
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if err != nil {
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m.recorder.Eventf(ref, api.EventTypeWarning, events.FailedToCreateContainer, "Failed to create container with error: %v", err)
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return "Generate Container Config Failed", err
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}
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containerID, err := m.runtimeService.CreateContainer(podSandboxID, containerConfig, podSandboxConfig)
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if err != nil {
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m.recorder.Eventf(ref, api.EventTypeWarning, events.FailedToCreateContainer, "Failed to create container with error: %v", err)
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return "Create Container Failed", err
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}
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m.recorder.Eventf(ref, api.EventTypeNormal, events.CreatedContainer, "Created container with id %v", containerID)
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if ref != nil {
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m.containerRefManager.SetRef(kubecontainer.ContainerID{
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Type: m.runtimeName,
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ID: containerID,
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}, ref)
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}
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// Step 3: start the container.
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err = m.runtimeService.StartContainer(containerID)
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if err != nil {
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m.recorder.Eventf(ref, api.EventTypeWarning, events.FailedToStartContainer,
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"Failed to start container with id %v with error: %v", containerID, err)
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return "Start Container Failed", err
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}
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m.recorder.Eventf(ref, api.EventTypeNormal, events.StartedContainer, "Started container with id %v", containerID)
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// Step 4: execute the post start hook.
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if container.Lifecycle != nil && container.Lifecycle.PostStart != nil {
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kubeContainerID := kubecontainer.ContainerID{
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Type: m.runtimeName,
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ID: containerID,
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}
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msg, handlerErr := m.runner.Run(kubeContainerID, pod, container, container.Lifecycle.PostStart)
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if handlerErr != nil {
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err := fmt.Errorf("PostStart handler: %v", handlerErr)
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m.generateContainerEvent(kubeContainerID, api.EventTypeWarning, events.FailedPostStartHook, msg)
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m.killContainer(pod, kubeContainerID, container, "FailedPostStartHook", nil)
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return "PostStart Hook Failed", err
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}
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}
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return "", nil
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}
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// getContainerLogsPath gets log path for container.
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func getContainerLogsPath(containerName string, podUID types.UID) string {
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return path.Join(podLogsRootDirectory, string(podUID), fmt.Sprintf("%s.log", containerName))
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@ -370,12 +443,11 @@ func (m *kubeGenericRuntimeManager) killContainer(pod *api.Pod, containerID kube
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if pod != nil && containerSpec != nil && containerSpec.Lifecycle != nil && containerSpec.Lifecycle.PreStop != nil {
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gracePeriod = gracePeriod - m.executePreStopHook(pod, containerID, containerSpec, gracePeriod)
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}
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if gracePeriodOverride == nil {
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// always give containers a minimal shutdown window to avoid unnecessary SIGKILLs
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if gracePeriod < minimumGracePeriodInSeconds {
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gracePeriod = minimumGracePeriodInSeconds
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}
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} else {
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// always give containers a minimal shutdown window to avoid unnecessary SIGKILLs
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if gracePeriod < minimumGracePeriodInSeconds {
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gracePeriod = minimumGracePeriodInSeconds
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}
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if gracePeriodOverride != nil {
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gracePeriod = *gracePeriodOverride
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glog.V(3).Infof("Killing container %q, but using %d second grace period override", containerID, gracePeriod)
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}
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@ -31,6 +31,7 @@ import (
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internalApi "k8s.io/kubernetes/pkg/kubelet/api"
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runtimeApi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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"k8s.io/kubernetes/pkg/kubelet/events"
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"k8s.io/kubernetes/pkg/kubelet/images"
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"k8s.io/kubernetes/pkg/kubelet/lifecycle"
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"k8s.io/kubernetes/pkg/kubelet/network"
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@ -39,6 +40,7 @@ import (
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"k8s.io/kubernetes/pkg/kubelet/util/format"
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kubetypes "k8s.io/kubernetes/pkg/types"
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"k8s.io/kubernetes/pkg/util/flowcontrol"
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utilruntime "k8s.io/kubernetes/pkg/util/runtime"
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)
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const (
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@ -306,15 +308,336 @@ func (m *kubeGenericRuntimeManager) GetPods(all bool) ([]*kubecontainer.Pod, err
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return result, nil
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}
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// SyncPod syncs the running pod into the desired pod.
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func (m *kubeGenericRuntimeManager) SyncPod(pod *api.Pod, _ api.PodStatus,
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podStatus *kubecontainer.PodStatus, pullSecrets []api.Secret,
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backOff *flowcontrol.Backoff) (result kubecontainer.PodSyncResult) {
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result.Fail(fmt.Errorf("not implemented"))
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// containerToKillInfo contains neccessary information to kill a container.
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type containerToKillInfo struct {
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// The spec of the container.
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container *api.Container
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// The name of the container.
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name string
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// The message indicates why the container will be killed.
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message string
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}
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// podContainerSpecChanges keeps information on changes that need to happen for a pod.
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type podContainerSpecChanges struct {
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// Whether need to create a new sandbox.
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CreateSandbox bool
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// The id of existing sandbox. It is used for starting containers in ContainersToStart.
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SandboxID string
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// The attempt number of creating sandboxes for the pod.
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Attempt uint32
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// ContainersToStart keeps a map of containers that need to be started, note that
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// the key is index of the container inside pod.Spec.Containers, while
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// the value is a message indicates why the container needs to start.
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ContainersToStart map[int]string
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// ContainersToKeep keeps a map of containers that need to be kept as is, note that
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// the key is the container ID of the container, while
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// the value is index of the container inside pod.Spec.Containers.
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ContainersToKeep map[kubecontainer.ContainerID]int
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// ContainersToKill keeps a map of containers that need to be killed, note that
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// the key is the container ID of the container, while
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// the value contains neccessary information to kill a container.
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ContainersToKill map[kubecontainer.ContainerID]containerToKillInfo
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}
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// podSandboxChanged checks whether the spec of the pod is changed and returns
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// (changed, new attempt, original sandboxID if exist).
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func (m *kubeGenericRuntimeManager) podSandboxChanged(pod *api.Pod, podStatus *kubecontainer.PodStatus) (changed bool, attempt uint32, sandboxID string) {
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if len(podStatus.SandboxStatuses) == 0 {
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return true, 0, ""
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}
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readySandboxCount := 0
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for _, s := range podStatus.SandboxStatuses {
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if s.GetState() == runtimeApi.PodSandBoxState_READY {
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readySandboxCount++
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}
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}
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// Needs to create a new sandbox when readySandboxCount > 1 or the ready sandbox is not the latest one.
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sandboxStatus := podStatus.SandboxStatuses[0]
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if readySandboxCount > 1 || sandboxStatus.GetState() != runtimeApi.PodSandBoxState_READY {
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return true, sandboxStatus.Metadata.GetAttempt() + 1, sandboxStatus.GetId()
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}
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// Needs to create a new sandbox when network namespace changed.
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if sandboxStatus.Linux != nil && sandboxStatus.Linux.Namespaces.Options != nil &&
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sandboxStatus.Linux.Namespaces.Options.GetHostNetwork() != kubecontainer.IsHostNetworkPod(pod) {
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return true, sandboxStatus.Metadata.GetAttempt() + 1, ""
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}
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return false, sandboxStatus.Metadata.GetAttempt(), sandboxStatus.GetId()
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}
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// computePodContainerChanges checks whether the pod spec has changed and returns the changes if true.
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func (m *kubeGenericRuntimeManager) computePodContainerChanges(pod *api.Pod, podStatus *kubecontainer.PodStatus) podContainerSpecChanges {
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glog.V(5).Infof("Syncing Pod %q: %+v", format.Pod(pod), pod)
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sandboxChanged, attempt, sandboxID := m.podSandboxChanged(pod, podStatus)
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changes := podContainerSpecChanges{
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CreateSandbox: sandboxChanged,
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SandboxID: sandboxID,
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Attempt: attempt,
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ContainersToStart: make(map[int]string),
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ContainersToKeep: make(map[kubecontainer.ContainerID]int),
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ContainersToKill: make(map[kubecontainer.ContainerID]containerToKillInfo),
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}
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for index, container := range pod.Spec.Containers {
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if sandboxChanged {
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message := fmt.Sprintf("Container %+v's pod sandbox is dead, the container will be recreated.", container)
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glog.Info(message)
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changes.ContainersToStart[index] = message
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continue
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}
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containerStatus := podStatus.FindContainerStatusByName(container.Name)
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if containerStatus == nil || containerStatus.State != kubecontainer.ContainerStateRunning {
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if kubecontainer.ShouldContainerBeRestarted(&container, pod, podStatus) {
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message := fmt.Sprintf("Container %+v is dead, but RestartPolicy says that we should restart it.", container)
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glog.Info(message)
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changes.ContainersToStart[index] = message
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}
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continue
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}
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expectedHash := kubecontainer.HashContainer(&container)
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containerChanged := containerStatus.Hash != expectedHash
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if containerChanged {
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message := fmt.Sprintf("Pod %q container %q hash changed (%d vs %d), it will be killed and re-created.",
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pod.Name, container.Name, containerStatus.Hash, expectedHash)
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glog.Info(message)
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changes.ContainersToStart[index] = message
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continue
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}
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liveness, found := m.livenessManager.Get(containerStatus.ID)
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if !found || liveness == proberesults.Success {
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changes.ContainersToKeep[containerStatus.ID] = index
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continue
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}
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if pod.Spec.RestartPolicy != api.RestartPolicyNever {
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message := fmt.Sprintf("pod %q container %q is unhealthy, it will be killed and re-created.", format.Pod(pod), container.Name)
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glog.Info(message)
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changes.ContainersToStart[index] = message
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}
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}
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// compute containers that to be killed
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runningContainerStatues := podStatus.GetRunningContainerStatuses()
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for _, containerStatus := range runningContainerStatues {
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if _, keep := changes.ContainersToKeep[containerStatus.ID]; !keep {
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var podContainer *api.Container
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var killMessage string
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for i, c := range pod.Spec.Containers {
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if c.Name == containerStatus.Name {
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podContainer = &pod.Spec.Containers[i]
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killMessage = changes.ContainersToStart[i]
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break
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}
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}
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changes.ContainersToKill[containerStatus.ID] = containerToKillInfo{
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name: containerStatus.Name,
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container: podContainer,
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message: killMessage,
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}
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}
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}
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return changes
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}
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// SyncPod syncs the running pod into the desired pod by executing following steps:
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//
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// 1. Compute sandbox and container changes.
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// 2. Kill pod sandbox if necessary.
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// 3. Kill any containers that should not be running.
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// 4. Create sandbox if necessary.
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// 5. Create necessary containers
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//
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// TODO: support init containers in SyncPod.
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func (m *kubeGenericRuntimeManager) SyncPod(pod *api.Pod, _ api.PodStatus, podStatus *kubecontainer.PodStatus, pullSecrets []api.Secret, backOff *flowcontrol.Backoff) (result kubecontainer.PodSyncResult) {
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// Step 1: Compute sandbox and container changes.
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podContainerChanges := m.computePodContainerChanges(pod, podStatus)
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glog.V(3).Infof("computePodContainerChanges got %+v for pod %q", podContainerChanges, format.Pod(pod))
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if podContainerChanges.CreateSandbox {
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ref, err := api.GetReference(pod)
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if err != nil {
|
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glog.Errorf("Couldn't make a ref to pod %q: '%v'", format.Pod(pod), err)
|
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}
|
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if podContainerChanges.SandboxID != "" {
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m.recorder.Eventf(ref, api.EventTypeNormal, "SandboxChanged", "Pod sandbox changed, it will be killed and re-created.")
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} else {
|
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m.recorder.Eventf(ref, api.EventTypeNormal, "SandboxReceived", "Pod sandbox received, it will be created.")
|
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}
|
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|
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}
|
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|
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// Step 2: Kill the pod if the sandbox has changed.
|
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if podContainerChanges.CreateSandbox || (len(podContainerChanges.ContainersToKeep) == 0 && len(podContainerChanges.ContainersToStart) == 0) {
|
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if len(podContainerChanges.ContainersToKeep) == 0 && len(podContainerChanges.ContainersToStart) == 0 {
|
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glog.V(4).Infof("Stopping PodSandbox for %q because all other containers are dead.", format.Pod(pod))
|
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} else {
|
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glog.V(4).Infof("Stopping PodSandbox for %q, will start new one", format.Pod(pod))
|
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}
|
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|
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killResult := m.killPodWithSyncResult(pod, kubecontainer.ConvertPodStatusToRunningPod(podStatus), nil)
|
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result.AddPodSyncResult(killResult)
|
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if killResult.Error() != nil {
|
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glog.Errorf("killPodWithSyncResult failed: %v", killResult.Error())
|
||||
return
|
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}
|
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} else {
|
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// Step 3: kill any running containers in this pod which are not to keep.
|
||||
for containerID, containerInfo := range podContainerChanges.ContainersToKill {
|
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glog.V(3).Infof("Killing unwanted container %q(id=%q) for pod %q", containerInfo.name, containerID, format.Pod(pod))
|
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killContainerResult := kubecontainer.NewSyncResult(kubecontainer.KillContainer, containerInfo.name)
|
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result.AddSyncResult(killContainerResult)
|
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if err := m.killContainer(pod, containerID, containerInfo.container, containerInfo.message, nil); err != nil {
|
||||
killContainerResult.Fail(kubecontainer.ErrKillContainer, err.Error())
|
||||
glog.Errorf("killContainer %q(id=%q) for pod %q failed: %v", containerInfo.name, containerID, format.Pod(pod), err)
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// We pass the value of the podIP down to generatePodSandboxConfig and
|
||||
// generateContainerConfig, which in turn passes it to various other
|
||||
// functions, in order to facilitate functionality that requires this
|
||||
// value (hosts file and downward API) and avoid races determining
|
||||
// the pod IP in cases where a container requires restart but the
|
||||
// podIP isn't in the status manager yet.
|
||||
//
|
||||
// We default to the IP in the passed-in pod status, and overwrite it if the
|
||||
// sandbox needs to be (re)started.
|
||||
podIP := ""
|
||||
if podStatus != nil {
|
||||
podIP = podStatus.IP
|
||||
}
|
||||
|
||||
// Step 4: Create a sandbox for the pod if necessary.
|
||||
podSandboxID := podContainerChanges.SandboxID
|
||||
if podContainerChanges.CreateSandbox && len(podContainerChanges.ContainersToStart) > 0 {
|
||||
var msg string
|
||||
var err error
|
||||
|
||||
glog.V(4).Infof("Creating sandbox for pod %q", format.Pod(pod))
|
||||
createSandboxResult := kubecontainer.NewSyncResult(kubecontainer.CreatePodSandbox, format.Pod(pod))
|
||||
result.AddSyncResult(createSandboxResult)
|
||||
podSandboxID, msg, err = m.createPodSandbox(pod, podContainerChanges.Attempt)
|
||||
if err != nil {
|
||||
createSandboxResult.Fail(kubecontainer.ErrCreatePodSandbox, msg)
|
||||
glog.Errorf("createPodSandbox for pod %q failed: %v", format.Pod(pod), err)
|
||||
return
|
||||
}
|
||||
|
||||
setupNetworkResult := kubecontainer.NewSyncResult(kubecontainer.SetupNetwork, podSandboxID)
|
||||
result.AddSyncResult(setupNetworkResult)
|
||||
if !kubecontainer.IsHostNetworkPod(pod) {
|
||||
glog.V(3).Infof("Calling network plugin %s to setup pod for %s", m.networkPlugin.Name(), format.Pod(pod))
|
||||
// Setup pod network plugin with sandbox id
|
||||
// TODO: rename the last param to sandboxID
|
||||
err = m.networkPlugin.SetUpPod(pod.Namespace, pod.Name, kubecontainer.ContainerID{
|
||||
Type: m.runtimeName,
|
||||
ID: podSandboxID,
|
||||
})
|
||||
if err != nil {
|
||||
message := fmt.Sprintf("Failed to setup network for pod %q using network plugins %q: %v", format.Pod(pod), m.networkPlugin.Name(), err)
|
||||
setupNetworkResult.Fail(kubecontainer.ErrSetupNetwork, message)
|
||||
glog.Error(message)
|
||||
|
||||
killPodSandboxResult := kubecontainer.NewSyncResult(kubecontainer.KillPodSandbox, format.Pod(pod))
|
||||
result.AddSyncResult(killPodSandboxResult)
|
||||
if err := m.runtimeService.StopPodSandbox(podSandboxID); err != nil {
|
||||
killPodSandboxResult.Fail(kubecontainer.ErrKillPodSandbox, err.Error())
|
||||
glog.Errorf("Kill sandbox %q failed for pod %q: %v", podSandboxID, format.Pod(pod), err)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
podSandboxStatus, err := m.runtimeService.PodSandboxStatus(podSandboxID)
|
||||
if err != nil {
|
||||
glog.Errorf("Failed to get pod sandbox status: %v; Skipping pod %q", err, format.Pod(pod))
|
||||
result.Fail(err)
|
||||
return
|
||||
}
|
||||
|
||||
// Overwrite the podIP passed in the pod status, since we just started the infra container.
|
||||
podIP = m.determinePodSandboxIP(pod.Namespace, pod.Name, podSandboxStatus)
|
||||
glog.V(4).Infof("Determined the ip %q for pod %q after sandbox changed", podIP, format.Pod(pod))
|
||||
}
|
||||
}
|
||||
|
||||
// Get podSandboxConfig for containers to start.
|
||||
configPodSandboxResult := kubecontainer.NewSyncResult(kubecontainer.ConfigPodSandbox, podSandboxID)
|
||||
result.AddSyncResult(configPodSandboxResult)
|
||||
podSandboxConfig, err := m.generatePodSandboxConfig(pod, podContainerChanges.Attempt)
|
||||
if err != nil {
|
||||
message := fmt.Sprintf("GeneratePodSandboxConfig for pod %q failed: %v", format.Pod(pod), err)
|
||||
glog.Error(message)
|
||||
configPodSandboxResult.Fail(kubecontainer.ErrConfigPodSandbox, message)
|
||||
return
|
||||
}
|
||||
|
||||
// Step 5: start containers in podContainerChanges.ContainersToStart.
|
||||
for idx := range podContainerChanges.ContainersToStart {
|
||||
container := &pod.Spec.Containers[idx]
|
||||
startContainerResult := kubecontainer.NewSyncResult(kubecontainer.StartContainer, container.Name)
|
||||
result.AddSyncResult(startContainerResult)
|
||||
|
||||
isInBackOff, msg, err := m.doBackOff(pod, container, podStatus, backOff)
|
||||
if isInBackOff {
|
||||
startContainerResult.Fail(err, msg)
|
||||
glog.V(4).Infof("Backing Off restarting container %+v in pod %v", container, format.Pod(pod))
|
||||
continue
|
||||
}
|
||||
|
||||
glog.V(4).Infof("Creating container %+v in pod %v", container, format.Pod(pod))
|
||||
if msg, err := m.startContainer(podSandboxID, podSandboxConfig, container, pod, podStatus, pullSecrets, podIP); err != nil {
|
||||
startContainerResult.Fail(err, msg)
|
||||
utilruntime.HandleError(fmt.Errorf("container start failed: %v: %s", err, msg))
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// If a container is still in backoff, the function will return a brief backoff error and
|
||||
// a detailed error message.
|
||||
func (m *kubeGenericRuntimeManager) doBackOff(pod *api.Pod, container *api.Container, podStatus *kubecontainer.PodStatus, backOff *flowcontrol.Backoff) (bool, string, error) {
|
||||
var cStatus *kubecontainer.ContainerStatus
|
||||
for _, c := range podStatus.ContainerStatuses {
|
||||
if c.Name == container.Name && c.State == kubecontainer.ContainerStateExited {
|
||||
cStatus = c
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
if cStatus == nil {
|
||||
return false, "", nil
|
||||
}
|
||||
|
||||
glog.Infof("checking backoff for container %q in pod %q", container.Name, format.Pod(pod))
|
||||
// Use the finished time of the latest exited container as the start point to calculate whether to do back-off.
|
||||
ts := cStatus.FinishedAt
|
||||
// backOff requires a unique id to identify the container
|
||||
stableName := fmt.Sprintf("%s_%s_%s_%s", pod.Name, pod.Namespace, string(pod.UID), container.Name)
|
||||
if backOff.IsInBackOffSince(stableName, ts) {
|
||||
if ref, err := kubecontainer.GenerateContainerRef(pod, container); err == nil {
|
||||
m.recorder.Eventf(ref, api.EventTypeWarning, events.BackOffStartContainer, "Back-off restarting failed container")
|
||||
}
|
||||
err := fmt.Errorf("Back-off %s restarting failed container=%s pod=%s", backOff.Get(stableName), container.Name, format.Pod(pod))
|
||||
glog.Infof("%s", err.Error())
|
||||
return true, err.Error(), kubecontainer.ErrCrashLoopBackOff
|
||||
}
|
||||
|
||||
backOff.Next(stableName, ts)
|
||||
return false, "", nil
|
||||
}
|
||||
|
||||
// KillPod kills all the containers of a pod. Pod may be nil, running pod must not be.
|
||||
// gracePeriodOverride if specified allows the caller to override the pod default grace period.
|
||||
// only hard kill paths are allowed to specify a gracePeriodOverride in the kubelet in order to not corrupt user data.
|
||||
@ -409,11 +732,18 @@ func (m *kubeGenericRuntimeManager) GetPodStatus(uid kubetypes.UID, name, namesp
|
||||
// Anyhow, we only promised "best-effort" restart count reporting, we can just ignore
|
||||
// these limitations now.
|
||||
// TODO: move this comment to SyncPod.
|
||||
podFullName := kubecontainer.BuildPodFullName(name, namespace)
|
||||
podSandboxIDs, err := m.getSandboxIDByPodUID(string(uid), nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
podFullName := format.Pod(&api.Pod{
|
||||
ObjectMeta: api.ObjectMeta{
|
||||
Name: name,
|
||||
Namespace: namespace,
|
||||
UID: uid,
|
||||
},
|
||||
})
|
||||
glog.V(4).Infof("getSandboxIDByPodUID got sandbox IDs %q for pod %q(UID:%q)", podSandboxIDs, podFullName, string(uid))
|
||||
|
||||
sandboxStatuses := make([]*runtimeApi.PodSandboxStatus, len(podSandboxIDs))
|
||||
@ -432,12 +762,12 @@ func (m *kubeGenericRuntimeManager) GetPodStatus(uid kubetypes.UID, name, namesp
|
||||
podIP = m.determinePodSandboxIP(namespace, name, podSandboxStatus)
|
||||
}
|
||||
|
||||
containerStatus, err := m.getKubeletContainerStatuses(podSandboxID)
|
||||
statuses, err := m.getKubeletContainerStatuses(podSandboxID)
|
||||
if err != nil {
|
||||
glog.Errorf("getKubeletContainerStatuses for sandbox %s failed: %v", podSandboxID, err)
|
||||
return nil, err
|
||||
}
|
||||
containerStatuses = append(containerStatuses, containerStatus...)
|
||||
containerStatuses = append(containerStatuses, statuses...)
|
||||
}
|
||||
|
||||
return &kubecontainer.PodStatus{
|
||||
@ -492,7 +822,14 @@ func (m *kubeGenericRuntimeManager) GarbageCollect(gcPolicy kubecontainer.Contai
|
||||
|
||||
// GetPodContainerID gets pod sandbox ID
|
||||
func (m *kubeGenericRuntimeManager) GetPodContainerID(pod *kubecontainer.Pod) (kubecontainer.ContainerID, error) {
|
||||
podFullName := kubecontainer.BuildPodFullName(pod.Name, pod.Namespace)
|
||||
// TODO: add a format function for kubecontainer.Pod
|
||||
podFullName := format.Pod(&api.Pod{
|
||||
ObjectMeta: api.ObjectMeta{
|
||||
Name: pod.Name,
|
||||
Namespace: pod.Namespace,
|
||||
UID: pod.ID,
|
||||
},
|
||||
})
|
||||
if len(pod.Sandboxes) == 0 {
|
||||
glog.Errorf("No sandboxes are found for pod %q", podFullName)
|
||||
return kubecontainer.ContainerID{}, fmt.Errorf("sandboxes for pod %q not found", podFullName)
|
||||
|
||||
@ -20,6 +20,7 @@ import (
|
||||
"reflect"
|
||||
"sort"
|
||||
"testing"
|
||||
"time"
|
||||
|
||||
"github.com/stretchr/testify/assert"
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
@ -31,6 +32,7 @@ import (
|
||||
"k8s.io/kubernetes/pkg/kubelet/network"
|
||||
nettest "k8s.io/kubernetes/pkg/kubelet/network/testing"
|
||||
kubetypes "k8s.io/kubernetes/pkg/types"
|
||||
"k8s.io/kubernetes/pkg/util/flowcontrol"
|
||||
)
|
||||
|
||||
var (
|
||||
@ -70,7 +72,7 @@ func makeAndSetFakePod(m *kubeGenericRuntimeManager, fakeRuntime *apitest.FakeRu
|
||||
}
|
||||
|
||||
func makeFakePodSandbox(m *kubeGenericRuntimeManager, pod *api.Pod, createdAt int64) (*apitest.FakePodSandbox, error) {
|
||||
config, err := m.generatePodSandboxConfig(pod, "", 0)
|
||||
config, err := m.generatePodSandboxConfig(pod, 0)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -114,7 +116,7 @@ func makeFakeContainer(m *kubeGenericRuntimeManager, pod *api.Pod, container api
|
||||
}
|
||||
|
||||
func makeFakeContainers(m *kubeGenericRuntimeManager, pod *api.Pod, containers []api.Container, createdAt int64) ([]*apitest.FakeContainer, error) {
|
||||
sandboxConfig, err := m.generatePodSandboxConfig(pod, "", 0)
|
||||
sandboxConfig, err := m.generatePodSandboxConfig(pod, 0)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -441,3 +443,44 @@ func TestKillPod(t *testing.T) {
|
||||
assert.Equal(t, runtimeApi.ContainerState_EXITED, c.GetState())
|
||||
}
|
||||
}
|
||||
|
||||
func TestSyncPod(t *testing.T) {
|
||||
fakeRuntime, fakeImage, m, err := createTestRuntimeManager()
|
||||
assert.NoError(t, err)
|
||||
|
||||
containers := []api.Container{
|
||||
{
|
||||
Name: "foo1",
|
||||
Image: "busybox",
|
||||
ImagePullPolicy: api.PullIfNotPresent,
|
||||
},
|
||||
{
|
||||
Name: "foo2",
|
||||
Image: "alpine",
|
||||
ImagePullPolicy: api.PullIfNotPresent,
|
||||
},
|
||||
}
|
||||
pod := &api.Pod{
|
||||
ObjectMeta: api.ObjectMeta{
|
||||
UID: "12345678",
|
||||
Name: "foo",
|
||||
Namespace: "new",
|
||||
},
|
||||
Spec: api.PodSpec{
|
||||
Containers: containers,
|
||||
},
|
||||
}
|
||||
|
||||
backOff := flowcontrol.NewBackOff(time.Second, time.Minute)
|
||||
result := m.SyncPod(pod, api.PodStatus{}, &kubecontainer.PodStatus{}, []api.Secret{}, backOff)
|
||||
assert.NoError(t, result.Error())
|
||||
assert.Equal(t, 2, len(fakeRuntime.Containers))
|
||||
assert.Equal(t, 2, len(fakeImage.Images))
|
||||
assert.Equal(t, 1, len(fakeRuntime.Sandboxes))
|
||||
for _, sandbox := range fakeRuntime.Sandboxes {
|
||||
assert.Equal(t, runtimeApi.PodSandBoxState_READY, sandbox.GetState())
|
||||
}
|
||||
for _, c := range fakeRuntime.Containers {
|
||||
assert.Equal(t, runtimeApi.ContainerState_RUNNING, c.GetState())
|
||||
}
|
||||
}
|
||||
|
||||
@ -17,6 +17,7 @@ limitations under the License.
|
||||
package kuberuntime
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"sort"
|
||||
|
||||
"github.com/golang/glog"
|
||||
@ -25,10 +26,30 @@ import (
|
||||
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
|
||||
"k8s.io/kubernetes/pkg/kubelet/network"
|
||||
"k8s.io/kubernetes/pkg/kubelet/types"
|
||||
"k8s.io/kubernetes/pkg/kubelet/util/format"
|
||||
)
|
||||
|
||||
// createPodSandbox creates a pod sandbox and returns (podSandBoxID, message, error).
|
||||
func (m *kubeGenericRuntimeManager) createPodSandbox(pod *api.Pod, attempt uint32) (string, string, error) {
|
||||
podSandboxConfig, err := m.generatePodSandboxConfig(pod, attempt)
|
||||
if err != nil {
|
||||
message := fmt.Sprintf("GeneratePodSandboxConfig for pod %q failed: %v", format.Pod(pod), err)
|
||||
glog.Error(message)
|
||||
return "", message, err
|
||||
}
|
||||
|
||||
podSandBoxID, err := m.runtimeService.RunPodSandbox(podSandboxConfig)
|
||||
if err != nil {
|
||||
message := fmt.Sprintf("CreatePodSandbox for pod %q failed: %v", format.Pod(pod), err)
|
||||
glog.Error(message)
|
||||
return "", message, err
|
||||
}
|
||||
|
||||
return podSandBoxID, "", nil
|
||||
}
|
||||
|
||||
// generatePodSandboxConfig generates pod sandbox config from api.Pod.
|
||||
func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *api.Pod, podIP string, attempt uint32) (*runtimeApi.PodSandboxConfig, error) {
|
||||
func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *api.Pod, attempt uint32) (*runtimeApi.PodSandboxConfig, error) {
|
||||
// TODO: deprecating podsandbox resource requirements in favor of the pod level cgroup
|
||||
// Refer https://github.com/kubernetes/kubernetes/issues/29871
|
||||
podUID := string(pod.UID)
|
||||
@ -63,7 +84,8 @@ func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *api.Pod, podIP
|
||||
cgroupParent := ""
|
||||
portMappings := []*runtimeApi.PortMapping{}
|
||||
for _, c := range pod.Spec.Containers {
|
||||
opts, err := m.runtimeHelper.GenerateRunContainerOptions(pod, &c, podIP)
|
||||
// TODO: use a separate interface to only generate portmappings
|
||||
opts, err := m.runtimeHelper.GenerateRunContainerOptions(pod, &c, "")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user