120 lines
3.9 KiB
Go
120 lines
3.9 KiB
Go
package server
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import (
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"fmt"
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"os"
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"github.com/Sirupsen/logrus"
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"github.com/containers/storage"
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"github.com/docker/docker/pkg/mount"
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"github.com/docker/docker/pkg/symlink"
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"github.com/kubernetes-incubator/cri-o/oci"
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"github.com/opencontainers/selinux/go-selinux/label"
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"golang.org/x/net/context"
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"golang.org/x/sys/unix"
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pb "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
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)
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// StopPodSandbox stops the sandbox. If there are any running containers in the
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// sandbox, they should be force terminated.
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func (s *Server) StopPodSandbox(ctx context.Context, req *pb.StopPodSandboxRequest) (*pb.StopPodSandboxResponse, error) {
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logrus.Debugf("StopPodSandboxRequest %+v", req)
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sb, err := s.getPodSandboxFromRequest(req.PodSandboxId)
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if err != nil {
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if err == errSandboxIDEmpty {
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return nil, err
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}
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// If the sandbox isn't found we just return an empty response to adhere
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// the the CRI interface which expects to not error out in not found
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// cases.
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resp := &pb.StopPodSandboxResponse{}
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logrus.Warnf("could not get sandbox %s, it's probably been stopped already: %v", req.PodSandboxId, err)
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return resp, nil
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}
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podInfraContainer := sb.infraContainer
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netnsPath, err := podInfraContainer.NetNsPath()
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if err != nil {
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return nil, err
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}
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if _, err := os.Stat(netnsPath); err == nil {
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if err2 := s.netPlugin.TearDownPod(netnsPath, sb.namespace, sb.kubeName, sb.id); err2 != nil {
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logrus.Warnf("failed to destroy network for container %s in sandbox %s: %v",
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podInfraContainer.Name(), sb.id, err2)
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}
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} else if !os.IsNotExist(err) { // it's ok for netnsPath to *not* exist
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return nil, fmt.Errorf("failed to stat netns path for container %s in sandbox %s before tearing down the network: %v",
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sb.name, sb.id, err)
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}
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// Close the sandbox networking namespace.
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if err := sb.netNsRemove(); err != nil {
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return nil, err
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}
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containers := sb.containers.List()
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containers = append(containers, podInfraContainer)
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for _, c := range containers {
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if err := s.runtime.UpdateStatus(c); err != nil {
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return nil, err
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}
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cStatus := s.runtime.ContainerStatus(c)
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if cStatus.Status != oci.ContainerStateStopped {
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if err := s.runtime.StopContainer(c, -1); err != nil {
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return nil, fmt.Errorf("failed to stop container %s in pod sandbox %s: %v", c.Name(), sb.id, err)
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}
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if c.ID() == podInfraContainer.ID() {
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continue
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}
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if err := s.storageRuntimeServer.StopContainer(c.ID()); err != nil && err != storage.ErrContainerUnknown {
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// assume container already umounted
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logrus.Warnf("failed to stop container %s in pod sandbox %s: %v", c.Name(), sb.id, err)
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}
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}
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s.containerStateToDisk(c)
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}
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if err := label.ReleaseLabel(sb.processLabel); err != nil {
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return nil, err
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}
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// unmount the shm for the pod
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if sb.shmPath != "/dev/shm" {
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// we got namespaces in the form of
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// /var/run/containers/storage/overlay-containers/CID/userdata/shm
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// but /var/run on most system is symlinked to /run so we first resolve
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// the symlink and then try and see if it's mounted
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fp, err := symlink.FollowSymlinkInScope(sb.shmPath, "/")
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if err != nil {
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return nil, err
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}
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if mounted, err := mount.Mounted(fp); err == nil && mounted {
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if err := unix.Unmount(fp, unix.MNT_DETACH); err != nil {
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return nil, err
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}
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}
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}
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if err := s.storageRuntimeServer.StopContainer(sb.id); err != nil && err != storage.ErrContainerUnknown {
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logrus.Warnf("failed to stop sandbox container in pod sandbox %s: %v", sb.id, err)
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}
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resp := &pb.StopPodSandboxResponse{}
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logrus.Debugf("StopPodSandboxResponse: %+v", resp)
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return resp, nil
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}
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// StopAllPodSandboxes removes all pod sandboxes
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func (s *Server) StopAllPodSandboxes() {
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logrus.Debugf("StopAllPodSandboxes")
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for _, sb := range s.state.sandboxes {
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pod := &pb.StopPodSandboxRequest{
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PodSandboxId: sb.id,
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}
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if _, err := s.StopPodSandbox(nil, pod); err != nil {
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logrus.Warnf("could not StopPodSandbox %s: %v", sb.id, err)
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}
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}
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}
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