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6b3a6e6b98
Instead of saying "Google Inc." (which is not always correct) say "The Kubernetes Authors", which is generic.
96 lines
3.1 KiB
Go
96 lines
3.1 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package rkt
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import (
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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kubecontainer "github.com/GoogleCloudPlatform/kubernetes/pkg/kubelet/container"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/probe"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/types"
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"github.com/golang/glog"
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)
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// SyncPod syncs the running pod to match the specified desired pod.
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func (r *Runtime) SyncPod(pod *api.Pod, runningPod kubecontainer.Pod, podStatus api.PodStatus) error {
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podFullName := kubecontainer.GetPodFullName(pod)
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if len(runningPod.Containers) == 0 {
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glog.V(4).Infof("Pod %q is not running, will start it", podFullName)
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// TODO(yifan): Use RunContainerOptionsGeneratior to get volumeMaps, etc.
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return r.RunPod(pod, nil)
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}
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// Add references to all containers.
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unidentifiedContainers := make(map[types.UID]*kubecontainer.Container)
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for _, c := range runningPod.Containers {
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unidentifiedContainers[c.ID] = c
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}
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restartPod := false
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for _, container := range pod.Spec.Containers {
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expectedHash := hashContainer(&container)
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c := runningPod.FindContainerByName(container.Name)
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if c == nil {
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if kubecontainer.ShouldContainerBeRestarted(&container, pod, &podStatus, r.readinessManager) {
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glog.V(3).Infof("Container %+v is dead, but RestartPolicy says that we should restart it.", container)
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// TODO(yifan): Containers in one pod are fate-sharing at this moment, see:
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// https://github.com/appc/spec/issues/276.
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restartPod = true
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break
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}
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continue
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}
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// TODO(yifan): Take care of host network change.
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containerChanged := c.Hash != 0 && c.Hash != expectedHash
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if containerChanged {
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glog.Infof("Pod %q container %q hash changed (%d vs %d), it will be killed and re-created.", podFullName, container.Name, c.Hash, expectedHash)
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restartPod = true
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break
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}
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result, err := r.prober.Probe(pod, podStatus, container, string(c.ID), c.Created)
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// TODO(vmarmol): examine this logic.
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if err == nil && result != probe.Success {
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glog.Infof("Pod %q container %q is unhealthy (probe result: %v), it will be killed and re-created.", podFullName, container.Name, result)
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restartPod = true
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break
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}
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if err != nil {
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glog.V(2).Infof("Probe container %q failed: %v", container.Name, err)
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}
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delete(unidentifiedContainers, c.ID)
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}
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// If there is any unidentified containers, restart the pod.
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if len(unidentifiedContainers) > 0 {
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restartPod = true
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}
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if restartPod {
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// TODO(yifan): Handle network plugin.
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if err := r.KillPod(runningPod); err != nil {
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return err
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}
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if err := r.RunPod(pod, nil); err != nil {
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return err
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}
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}
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return nil
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}
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