// Removes the oldest toRemove containers and returns the resulting slice.
func (cgc *realContainerGC) removeOldestN(containers []containerGCInfo, toRemove int) []containerGCInfo {
// Remove from oldest to newest (last to first).
numToKeep := len(containers) - toRemove
for i := numToKeep; i < len(containers); i++ {
err := cgc.dockerClient.RemoveContainer(docker.RemoveContainerOptions{ID: containers[i].id, RemoveVolumes: true})
if err != nil {
glog.Warningf("Failed to remove dead container %q: %v", containers[i].name, err)
}
symlinkPath := dockertools.LogSymlink(cgc.containerLogsDir, containers[i].podNameWithNamespace, containers[i].containerName, containers[i].id)
err = os.Remove(symlinkPath)
if err != nil && !os.IsNotExist(err) {
glog.Warningf("Failed to remove container %q log symlink %q: %v", containers[i].name, symlinkPath, err)
}
}
// Assume we removed the containers so that we're not too aggressive.
return containers[:numToKeep]
}
// legacyLogSymlink composes the legacy container log path. It is only used for legacy cluster
// logging support.
func legacyLogSymlink(containerID string, containerName, podName, podNamespace string) string {
return dockertools.LogSymlink(legacyContainerLogsDir, kubecontainer.BuildPodFullName(podName, podNamespace),
containerName, containerID)
}