Golang runtime.PodSandboxConfig类代码示例

// getContainerSecurityOpt gets container security options from container and sandbox config, currently from sandbox
// annotations.
// It is an experimental feature and may be promoted to official runtime api in the future.
func getContainerSecurityOpts(containerName string, sandboxConfig *runtimeApi.PodSandboxConfig, seccompProfileRoot string) ([]string, error) {
	appArmorOpts, err := dockertools.GetAppArmorOpts(sandboxConfig.GetAnnotations(), containerName)
	if err != nil {
		return nil, err
	}
	seccompOpts, err := dockertools.GetSeccompOpts(sandboxConfig.GetAnnotations(), containerName, seccompProfileRoot)
	if err != nil {
		return nil, err
	}
	securityOpts := append(appArmorOpts, seccompOpts...)
	var opts []string
	for _, securityOpt := range securityOpts {
		k, v := securityOpt.GetKV()
		opts = append(opts, fmt.Sprintf("%s=%s", k, v))
	}
	return opts, nil
}

// CreatePodSandbox creates a pod-level sandbox.
// The definition of PodSandbox is at https://github.com/kubernetes/kubernetes/pull/25899
// For docker, PodSandbox is implemented by a container holding the network
// namespace for the pod.
// Note: docker doesn't use LogDirectory (yet).
func (ds *dockerService) CreatePodSandbox(config *runtimeApi.PodSandboxConfig) (string, error) {
	// Step 1: Pull the image for the sandbox.
	// TODO: How should we handle pulling custom pod infra container image
	// (with credentials)?
	image := defaultSandboxImage
	if err := ds.client.PullImage(image, dockertypes.AuthConfig{}, dockertypes.ImagePullOptions{}); err != nil {
		return "", fmt.Errorf("unable to pull image for the sandbox container: %v", err)
	}

	// Step 2: Create the sandbox container.
	createConfig := makeSandboxDockerConfig(config, image)
	createResp, err := ds.client.CreateContainer(*createConfig)
	if err != nil || createResp == nil {
		return "", fmt.Errorf("failed to create a sandbox for pod %q: %v", config.GetName(), err)
	}

	// Step 3: Start the sandbox container.
	// Assume kubelet's garbage collector would remove the sandbox later, if
	// startContainer failed.
	err = ds.StartContainer(createResp.ID)
	return createResp.ID, err
}

func makeFakeContainer(m *kubeGenericRuntimeManager, pod *api.Pod, container api.Container, sandboxConfig *runtimeApi.PodSandboxConfig) (*apitest.FakeContainer, error) {
	containerConfig, err := m.generateContainerConfig(&container, pod, 0, "")
	if err != nil {
		return nil, err
	}

	containerID := containerConfig.GetName()
	runningState := runtimeApi.ContainerState_RUNNING
	imageRef := containerConfig.Image.GetImage()
	return &apitest.FakeContainer{
		ContainerStatus: runtimeApi.ContainerStatus{
			Id:          &containerID,
			Name:        containerConfig.Name,
			Image:       containerConfig.Image,
			ImageRef:    &imageRef,
			CreatedAt:   &fakeCreatedAt,
			State:       &runningState,
			Labels:      containerConfig.Labels,
			Annotations: containerConfig.Annotations,
		},
		SandboxID: sandboxConfig.GetName(),
	}, nil
}

func (r *FakeRuntimeService) CreatePodSandbox(config *runtimeApi.PodSandboxConfig) (string, error) {
	r.Lock()
	defer r.Unlock()

	r.Called = append(r.Called, "CreatePodSandbox")

	// PodSandboxID should be randomized for real container runtime, but here just use
	// sandbox's name for easily making fake sandboxes.
	podSandboxID := config.GetName()
	createdAt := time.Now().Unix()
	readyState := runtimeApi.PodSandBoxState_READY
	r.Sandboxes[podSandboxID] = &FakePodSandbox{
		PodSandbox: runtimeApi.PodSandbox{
			Id:        &podSandboxID,
			Name:      config.Name,
			State:     &readyState,
			CreatedAt: &createdAt,
			Labels:    config.Labels,
		},
		Annotations: config.Annotations,
	}

	return podSandboxID, nil
}

// RunPodSandbox creates and starts a pod-level sandbox. Runtimes should ensure
// the sandbox is in ready state.
// For docker, PodSandbox is implemented by a container holding the network
// namespace for the pod.
// Note: docker doesn't use LogDirectory (yet).
func (ds *dockerService) RunPodSandbox(config *runtimeapi.PodSandboxConfig) (string, error) {
	// Step 1: Pull the image for the sandbox.
	image := defaultSandboxImage
	podSandboxImage := ds.podSandboxImage
	if len(podSandboxImage) != 0 {
		image = podSandboxImage
	}

	// NOTE: To use a custom sandbox image in a private repository, users need to configure the nodes with credentials properly.
	// see: http://kubernetes.io/docs/user-guide/images/#configuring-nodes-to-authenticate-to-a-private-repository
	if err := ds.client.PullImage(image, dockertypes.AuthConfig{}, dockertypes.ImagePullOptions{}); err != nil {
		return "", fmt.Errorf("unable to pull image for the sandbox container: %v", err)
	}

	// Step 2: Create the sandbox container.
	createConfig, err := ds.makeSandboxDockerConfig(config, image)
	if err != nil {
		return "", fmt.Errorf("failed to make sandbox docker config for pod %q: %v", config.Metadata.GetName(), err)
	}
	createResp, err := ds.client.CreateContainer(*createConfig)
	recoverFromConflictIfNeeded(ds.client, err)

	if err != nil || createResp == nil {
		return "", fmt.Errorf("failed to create a sandbox for pod %q: %v", config.Metadata.GetName(), err)
	}

	// Step 3: Start the sandbox container.
	// Assume kubelet's garbage collector would remove the sandbox later, if
	// startContainer failed.
	err = ds.client.StartContainer(createResp.ID)
	if err != nil {
		return createResp.ID, fmt.Errorf("failed to start sandbox container for pod %q: %v", config.Metadata.GetName(), err)
	}
	if config.GetLinux().GetSecurityContext().GetNamespaceOptions().GetHostNetwork() {
		return createResp.ID, nil
	}

	// Step 4: Setup networking for the sandbox.
	// All pod networking is setup by a CNI plugin discovered at startup time.
	// This plugin assigns the pod ip, sets up routes inside the sandbox,
	// creates interfaces etc. In theory, its jurisdiction ends with pod
	// sandbox networking, but it might insert iptables rules or open ports
	// on the host as well, to satisfy parts of the pod spec that aren't
	// recognized by the CNI standard yet.
	cID := kubecontainer.BuildContainerID(runtimeName, createResp.ID)
	err = ds.networkPlugin.SetUpPod(config.GetMetadata().GetNamespace(), config.GetMetadata().GetName(), cID)
	// TODO: Do we need to teardown on failure or can we rely on a StopPodSandbox call with the given ID?
	return createResp.ID, err
}

func makeSandboxDockerConfig(c *runtimeApi.PodSandboxConfig, image string) *dockertypes.ContainerCreateConfig {
	// Merge annotations and labels because docker supports only labels.
	labels := makeLabels(c.GetLabels(), c.GetAnnotations())
	// Apply a label to distinguish sandboxes from regular containers.
	labels[containerTypeLabelKey] = containerTypeLabelSandbox

	hc := &dockercontainer.HostConfig{}
	createConfig := &dockertypes.ContainerCreateConfig{
		Name: c.GetName(),
		Config: &dockercontainer.Config{
			Hostname: c.GetHostname(),
			// TODO: Handle environment variables.
			Image:  image,
			Labels: labels,
		},
		HostConfig: hc,
	}

	// Apply linux-specific options.
	if lc := c.GetLinux(); lc != nil {
		// Apply Cgroup options.
		// TODO: Check if this works with per-pod cgroups.
		hc.CgroupParent = lc.GetCgroupParent()

		// Apply namespace options.
		hc.NetworkMode, hc.UTSMode, hc.PidMode = "", "", ""
		nsOpts := lc.GetNamespaceOptions()
		if nsOpts != nil {
			if nsOpts.GetHostNetwork() {
				hc.NetworkMode = namespaceModeHost
			} else {
				// Assume kubelet uses either the cni or the kubenet plugin.
				// TODO: support docker networking.
				hc.NetworkMode = "none"
			}
			if nsOpts.GetHostIpc() {
				hc.IpcMode = namespaceModeHost
			}
			if nsOpts.GetHostPid() {
				hc.PidMode = namespaceModeHost
			}
		}
	}
	// Set port mappings.
	exposedPorts, portBindings := makePortsAndBindings(c.GetPortMappings())
	createConfig.Config.ExposedPorts = exposedPorts
	hc.PortBindings = portBindings

	// Set DNS options.
	if dnsOpts := c.GetDnsOptions(); dnsOpts != nil {
		hc.DNS = dnsOpts.GetServers()
		hc.DNSSearch = dnsOpts.GetSearches()
	}

	// Apply resource options.
	setSandboxResources(c.GetResources(), hc)

	// Set security options.
	hc.SecurityOpt = []string{getSeccompOpts()}

	return createConfig
}

// startContainer starts a container and returns a message indicates why it is failed on error.
// It starts the container through the following steps:
// * pull the image
// * create the container
// * start the container
// * run the post start lifecycle hooks (if applicable)
func (m *kubeGenericRuntimeManager) startContainer(podSandboxID string, podSandboxConfig *runtimeapi.PodSandboxConfig, container *v1.Container, pod *v1.Pod, podStatus *kubecontainer.PodStatus, pullSecrets []v1.Secret, podIP string) (string, error) {
	// Step 1: pull the image.
	err, msg := m.imagePuller.EnsureImageExists(pod, container, pullSecrets)
	if err != nil {
		return msg, err
	}

	// Step 2: create the container.
	ref, err := kubecontainer.GenerateContainerRef(pod, container)
	if err != nil {
		glog.Errorf("Can't make a ref to pod %q, container %v: %v", format.Pod(pod), container.Name, err)
	}
	glog.V(4).Infof("Generating ref for container %s: %#v", container.Name, ref)

	// For a new container, the RestartCount should be 0
	restartCount := 0
	containerStatus := podStatus.FindContainerStatusByName(container.Name)
	if containerStatus != nil {
		restartCount = containerStatus.RestartCount + 1
	}

	containerConfig, err := m.generateContainerConfig(container, pod, restartCount, podIP)
	if err != nil {
		m.recorder.Eventf(ref, v1.EventTypeWarning, events.FailedToCreateContainer, "Failed to create container with error: %v", err)
		return "Generate Container Config Failed", err
	}
	containerID, err := m.runtimeService.CreateContainer(podSandboxID, containerConfig, podSandboxConfig)
	if err != nil {
		m.recorder.Eventf(ref, v1.EventTypeWarning, events.FailedToCreateContainer, "Failed to create container with error: %v", err)
		return "Create Container Failed", err
	}
	m.recorder.Eventf(ref, v1.EventTypeNormal, events.CreatedContainer, "Created container with id %v", containerID)
	if ref != nil {
		m.containerRefManager.SetRef(kubecontainer.ContainerID{
			Type: m.runtimeName,
			ID:   containerID,
		}, ref)
	}

	// Step 3: start the container.
	err = m.runtimeService.StartContainer(containerID)
	if err != nil {
		m.recorder.Eventf(ref, v1.EventTypeWarning, events.FailedToStartContainer,
			"Failed to start container with id %v with error: %v", containerID, err)
		return "Start Container Failed", err
	}
	m.recorder.Eventf(ref, v1.EventTypeNormal, events.StartedContainer, "Started container with id %v", containerID)

	// Symlink container logs to the legacy container log location for cluster logging
	// support.
	// TODO(random-liu): Remove this after cluster logging supports CRI container log path.
	containerMeta := containerConfig.GetMetadata()
	sandboxMeta := podSandboxConfig.GetMetadata()
	legacySymlink := legacyLogSymlink(containerID, containerMeta.GetName(), sandboxMeta.GetName(),
		sandboxMeta.GetNamespace())
	containerLog := filepath.Join(podSandboxConfig.GetLogDirectory(), containerConfig.GetLogPath())
	if err := m.osInterface.Symlink(containerLog, legacySymlink); err != nil {
		glog.Errorf("Failed to create legacy symbolic link %q to container %q log %q: %v",
			legacySymlink, containerID, containerLog, err)
	}

	// Step 4: execute the post start hook.
	if container.Lifecycle != nil && container.Lifecycle.PostStart != nil {
		kubeContainerID := kubecontainer.ContainerID{
			Type: m.runtimeName,
			ID:   containerID,
		}
		msg, handlerErr := m.runner.Run(kubeContainerID, pod, container, container.Lifecycle.PostStart)
		if handlerErr != nil {
			err := fmt.Errorf("PostStart handler: %v", handlerErr)
			m.generateContainerEvent(kubeContainerID, v1.EventTypeWarning, events.FailedPostStartHook, msg)
			m.killContainer(pod, kubeContainerID, container.Name, "FailedPostStartHook", nil)
			return "PostStart Hook Failed", err
		}
	}

	return "", nil
}

// makeSandboxDockerConfig returns dockertypes.ContainerCreateConfig based on runtimeapi.PodSandboxConfig.
func (ds *dockerService) makeSandboxDockerConfig(c *runtimeapi.PodSandboxConfig, image string) (*dockertypes.ContainerCreateConfig, error) {
	// Merge annotations and labels because docker supports only labels.
	labels := makeLabels(c.GetLabels(), c.GetAnnotations())
	// Apply a label to distinguish sandboxes from regular containers.
	labels[containerTypeLabelKey] = containerTypeLabelSandbox
	// Apply a container name label for infra container. This is used in summary v1.
	// TODO(random-liu): Deprecate this label once container metrics is directly got from CRI.
	labels[types.KubernetesContainerNameLabel] = sandboxContainerName

	hc := &dockercontainer.HostConfig{}
	createConfig := &dockertypes.ContainerCreateConfig{
		Name: makeSandboxName(c),
		Config: &dockercontainer.Config{
			Hostname: c.GetHostname(),
			// TODO: Handle environment variables.
			Image:  image,
			Labels: labels,
		},
		HostConfig: hc,
	}

	// Set sysctls if requested
	sysctls, err := getSysctlsFromAnnotations(c.Annotations)
	if err != nil {
		return nil, fmt.Errorf("failed to get sysctls from annotations %v for sandbox %q: %v", c.Annotations, c.Metadata.GetName(), err)
	}
	hc.Sysctls = sysctls

	// Apply linux-specific options.
	if lc := c.GetLinux(); lc != nil {
		if err := ds.applySandboxLinuxOptions(hc, lc, createConfig, image); err != nil {
			return nil, err
		}
	}

	// Set port mappings.
	exposedPorts, portBindings := makePortsAndBindings(c.GetPortMappings())
	createConfig.Config.ExposedPorts = exposedPorts
	hc.PortBindings = portBindings

	// Set DNS options.
	if dnsConfig := c.GetDnsConfig(); dnsConfig != nil {
		hc.DNS = dnsConfig.GetServers()
		hc.DNSSearch = dnsConfig.GetSearches()
		hc.DNSOptions = dnsConfig.GetOptions()
	}

	// Apply resource options.
	setSandboxResources(hc)

	// Set security options.
	securityOpts, err := getSandboxSecurityOpts(c, ds.seccompProfileRoot)
	if err != nil {
		return nil, fmt.Errorf("failed to generate sandbox security options for sandbox %q: %v", c.Metadata.GetName(), err)
	}
	hc.SecurityOpt = append(hc.SecurityOpt, securityOpts...)
	return createConfig, nil
}

// CreateContainer creates a new container in the given PodSandbox
// Note: docker doesn't use LogPath yet.
// TODO: check if the default values returned by the runtime API are ok.
func (ds *dockerService) CreateContainer(podSandboxID string, config *runtimeApi.ContainerConfig, sandboxConfig *runtimeApi.PodSandboxConfig) (string, error) {
	if config == nil {
		return "", fmt.Errorf("container config is nil")
	}
	if sandboxConfig == nil {
		return "", fmt.Errorf("sandbox config is nil for container %q", config.Metadata.GetName())
	}

	labels := makeLabels(config.GetLabels(), config.GetAnnotations())
	// Apply a the container type label.
	labels[containerTypeLabelKey] = containerTypeLabelContainer
	// Write the sandbox ID in the labels.
	labels[sandboxIDLabelKey] = podSandboxID

	image := ""
	if iSpec := config.GetImage(); iSpec != nil {
		image = iSpec.GetImage()
	}
	createConfig := dockertypes.ContainerCreateConfig{
		Name: makeContainerName(sandboxConfig, config),
		Config: &dockercontainer.Config{
			// TODO: set User.
			Entrypoint: dockerstrslice.StrSlice(config.GetCommand()),
			Cmd:        dockerstrslice.StrSlice(config.GetArgs()),
			Env:        generateEnvList(config.GetEnvs()),
			Image:      image,
			WorkingDir: config.GetWorkingDir(),
			Labels:     labels,
			// Interactive containers:
			OpenStdin: config.GetStdin(),
			StdinOnce: config.GetStdinOnce(),
			Tty:       config.GetTty(),
		},
	}

	// Fill the HostConfig.
	hc := &dockercontainer.HostConfig{
		Binds:          generateMountBindings(config.GetMounts()),
		ReadonlyRootfs: config.GetReadonlyRootfs(),
		Privileged:     config.GetPrivileged(),
	}

	// Apply options derived from the sandbox config.
	if lc := sandboxConfig.GetLinux(); lc != nil {
		// Apply Cgroup options.
		// TODO: Check if this works with per-pod cgroups.
		hc.CgroupParent = lc.GetCgroupParent()

		// Apply namespace options.
		sandboxNSMode := fmt.Sprintf("container:%v", podSandboxID)
		hc.NetworkMode = dockercontainer.NetworkMode(sandboxNSMode)
		hc.IpcMode = dockercontainer.IpcMode(sandboxNSMode)
		hc.UTSMode = ""
		hc.PidMode = ""

		nsOpts := lc.GetNamespaceOptions()
		if nsOpts != nil {
			if nsOpts.GetHostNetwork() {
				hc.UTSMode = namespaceModeHost
			}
			if nsOpts.GetHostPid() {
				hc.PidMode = namespaceModeHost
			}
		}
	}

	// Apply Linux-specific options if applicable.
	if lc := config.GetLinux(); lc != nil {
		// Apply resource options.
		// TODO: Check if the units are correct.
		// TODO: Can we assume the defaults are sane?
		rOpts := lc.GetResources()
		if rOpts != nil {
			hc.Resources = dockercontainer.Resources{
				Memory:     rOpts.GetMemoryLimitInBytes(),
				MemorySwap: -1, // Always disable memory swap.
				CPUShares:  rOpts.GetCpuShares(),
				CPUQuota:   rOpts.GetCpuQuota(),
				CPUPeriod:  rOpts.GetCpuPeriod(),
				// TODO: Need to set devices.
			}
			hc.OomScoreAdj = int(rOpts.GetOomScoreAdj())
		}
		// Note: ShmSize is handled in kube_docker_client.go
	}

	var err error
	hc.SecurityOpt, err = getContainerSecurityOpts(config.Metadata.GetName(), sandboxConfig, ds.seccompProfileRoot)
	if err != nil {
		return "", fmt.Errorf("failed to generate container security options for container %q: %v", config.Metadata.GetName(), err)
	}
	// TODO: Add or drop capabilities.

	createConfig.HostConfig = hc
	createResp, err := ds.client.CreateContainer(createConfig)
	if createResp != nil {
		return createResp.ID, err
//.........这里部分代码省略.........

// CreateContainer creates a new container in the given PodSandbox
// Note: docker doesn't use LogPath yet.
// TODO: check if the default values returned by the runtime API are ok.
func (ds *dockerService) CreateContainer(podSandboxID string, config *runtimeApi.ContainerConfig, sandboxConfig *runtimeApi.PodSandboxConfig) (string, error) {
	if config == nil {
		return "", fmt.Errorf("container config is nil")
	}
	if sandboxConfig == nil {
		return "", fmt.Errorf("sandbox config is nil for container %q", config.Metadata.GetName())
	}

	labels := makeLabels(config.GetLabels(), config.GetAnnotations())
	// Apply a the container type label.
	labels[containerTypeLabelKey] = containerTypeLabelContainer
	// Write the container log path in the labels.
	labels[containerLogPathLabelKey] = filepath.Join(sandboxConfig.GetLogDirectory(), config.GetLogPath())
	// Write the sandbox ID in the labels.
	labels[sandboxIDLabelKey] = podSandboxID

	image := ""
	if iSpec := config.GetImage(); iSpec != nil {
		image = iSpec.GetImage()
	}
	createConfig := dockertypes.ContainerCreateConfig{
		Name: makeContainerName(sandboxConfig, config),
		Config: &dockercontainer.Config{
			// TODO: set User.
			Entrypoint: dockerstrslice.StrSlice(config.GetCommand()),
			Cmd:        dockerstrslice.StrSlice(config.GetArgs()),
			Env:        generateEnvList(config.GetEnvs()),
			Image:      image,
			WorkingDir: config.GetWorkingDir(),
			Labels:     labels,
			// Interactive containers:
			OpenStdin: config.GetStdin(),
			StdinOnce: config.GetStdinOnce(),
			Tty:       config.GetTty(),
		},
	}

	// Fill the HostConfig.
	hc := &dockercontainer.HostConfig{
		Binds: generateMountBindings(config.GetMounts()),
	}

	// Apply cgroupsParent derived from the sandbox config.
	if lc := sandboxConfig.GetLinux(); lc != nil {
		// Apply Cgroup options.
		// TODO: Check if this works with per-pod cgroups.
		// TODO: we need to pass the cgroup in syntax expected by cgroup driver but shim does not use docker info yet...
		hc.CgroupParent = lc.GetCgroupParent()
	}

	// Apply Linux-specific options if applicable.
	if lc := config.GetLinux(); lc != nil {
		// Apply resource options.
		// TODO: Check if the units are correct.
		// TODO: Can we assume the defaults are sane?
		rOpts := lc.GetResources()
		if rOpts != nil {
			hc.Resources = dockercontainer.Resources{
				Memory:     rOpts.GetMemoryLimitInBytes(),
				MemorySwap: -1, // Always disable memory swap.
				CPUShares:  rOpts.GetCpuShares(),
				CPUQuota:   rOpts.GetCpuQuota(),
				CPUPeriod:  rOpts.GetCpuPeriod(),
			}
			hc.OomScoreAdj = int(rOpts.GetOomScoreAdj())
		}
		// Note: ShmSize is handled in kube_docker_client.go

		// Apply security context.
		applyContainerSecurityContext(lc, podSandboxID, createConfig.Config, hc)
	}

	// Set devices for container.
	devices := make([]dockercontainer.DeviceMapping, len(config.Devices))
	for i, device := range config.Devices {
		devices[i] = dockercontainer.DeviceMapping{
			PathOnHost:        device.GetHostPath(),
			PathInContainer:   device.GetContainerPath(),
			CgroupPermissions: device.GetPermissions(),
		}
	}
	hc.Resources.Devices = devices

	// Apply appArmor and seccomp options.
	securityOpts, err := getContainerSecurityOpts(config.Metadata.GetName(), sandboxConfig, ds.seccompProfileRoot)
	if err != nil {
		return "", fmt.Errorf("failed to generate container security options for container %q: %v", config.Metadata.GetName(), err)
	}
	hc.SecurityOpt = append(hc.SecurityOpt, securityOpts...)

	createConfig.HostConfig = hc
	createResp, err := ds.client.CreateContainer(createConfig)
	if createResp != nil {
		return createResp.ID, err
	}
	return "", err
}

// CreateContainer creates a new container in the given PodSandbox
// Note: docker doesn't use LogPath yet.
// TODO: check if the default values returned by the runtime API are ok.
func (ds *dockerService) CreateContainer(podSandboxID string, config *runtimeApi.ContainerConfig, sandboxConfig *runtimeApi.PodSandboxConfig) (string, error) {
	if config == nil {
		return "", fmt.Errorf("container config is nil")
	}
	if sandboxConfig == nil {
		return "", fmt.Errorf("sandbox config is nil for container %q", config.GetName())
	}

	// Merge annotations and labels because docker supports only labels.
	// TODO: add a prefix to annotations so that we can distinguish labels and
	// annotations when reading back them from the docker container.
	// TODO: should we apply docker-specific labels?
	labels := config.GetLabels()
	for k, v := range config.GetAnnotations() {
		if _, ok := labels[k]; !ok {
			// Only write to labels if the key doesn't exist.
			labels[k] = v
		}
	}

	image := ""
	if iSpec := config.GetImage(); iSpec != nil {
		image = iSpec.GetImage()
	}
	createConfig := dockertypes.ContainerCreateConfig{
		Name: config.GetName(),
		Config: &dockercontainer.Config{
			// TODO: set User.
			Hostname:   sandboxConfig.GetHostname(),
			Entrypoint: dockerstrslice.StrSlice(config.GetCommand()),
			Cmd:        dockerstrslice.StrSlice(config.GetArgs()),
			Env:        generateEnvList(config.GetEnvs()),
			Image:      image,
			WorkingDir: config.GetWorkingDir(),
			Labels:     labels,
			// Interactive containers:
			OpenStdin: config.GetStdin(),
			StdinOnce: config.GetStdinOnce(),
			Tty:       config.GetTty(),
		},
	}

	// Fill the HostConfig.
	hc := &dockercontainer.HostConfig{
		Binds:          generateMountBindings(config.GetMounts()),
		ReadonlyRootfs: config.GetReadonlyRootfs(),
		Privileged:     config.GetPrivileged(),
	}

	// Apply options derived from the sandbox config.
	if lc := sandboxConfig.GetLinux(); lc != nil {
		// Apply Cgroup options.
		// TODO: Check if this works with per-pod cgroups.
		hc.CgroupParent = lc.GetCgroupParent()

		// Apply namespace options.
		sandboxNSMode := fmt.Sprintf("container:%v", podSandboxID)
		hc.NetworkMode = dockercontainer.NetworkMode(sandboxNSMode)
		hc.IpcMode = dockercontainer.IpcMode(sandboxNSMode)
		hc.UTSMode = ""
		hc.PidMode = ""

		nsOpts := lc.GetNamespaceOptions()
		if nsOpts != nil {
			if nsOpts.GetHostNetwork() {
				hc.UTSMode = namespaceModeHost
			}
			if nsOpts.GetHostPid() {
				hc.PidMode = namespaceModeHost
			}
		}
	}

	// Apply Linux-specific options if applicable.
	if lc := config.GetLinux(); lc != nil {
		// Apply resource options.
		// TODO: Check if the units are correct.
		// TODO: Can we assume the defaults are sane?
		rOpts := lc.GetResources()
		if rOpts != nil {
			hc.Resources = dockercontainer.Resources{
				Memory:     rOpts.GetMemoryLimitInBytes(),
				MemorySwap: -1, // Always disable memory swap.
				CPUShares:  rOpts.GetCpuShares(),
				CPUQuota:   rOpts.GetCpuQuota(),
				CPUPeriod:  rOpts.GetCpuPeriod(),
				// TODO: Need to set devices.
			}
			hc.OomScoreAdj = int(rOpts.GetOomScoreAdj())
		}
		// Note: ShmSize is handled in kube_docker_client.go
	}

	// TODO: Seccomp support. Need to figure out how to pass seccomp options
	// through the runtime API (annotations?).See dockerManager.getSecurityOpts()
	// for the details. Always set the default seccomp profile for now.
	hc.SecurityOpt = []string{fmt.Sprintf("%s=%s", "seccomp", defaultSeccompProfile)}
//.........这里部分代码省略.........