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dockershim: set the default cgroup driver

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This commit is contained in:
Yu-Ju Hong 2017-02-07 13:57:30 -08:00
parent 3d78271dd9
commit f96611ac45
1 changed files with 12 additions and 7 deletions
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19
pkg/kubelet/dockershim/docker_service.go
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@ -68,6 +68,8 @@ const (
// The expiration time of version cache.
versionCacheTTL = 60 * time.Second
defaultCgroupDriver = "cgroupfs"
// TODO: https://github.com/kubernetes/kubernetes/pull/31169 provides experimental
// defaulting of host user namespace that may be enabled when the docker daemon
// is using remapped UIDs.
@ -147,18 +149,21 @@ func NewDockerService(client dockertools.DockerInterface, seccompProfileRoot str
glog.Infof("Docker cri networking managed by %v", plug.Name())
// NOTE: cgroup driver is only detectable in docker 1.11+
var cgroupDriver string
cgroupDriver := defaultCgroupDriver
dockerInfo, err := ds.client.Info()
if err != nil {
glog.Errorf("failed to execute Info() call to the Docker client: %v", err)
glog.Warningf("Using fallback default of cgroupfs as cgroup driver")
glog.Errorf("Failed to execute Info() call to the Docker client: %v", err)
glog.Warningf("Falling back to use the default driver: %q", cgroupDriver)
} else if len(dockerInfo.CgroupDriver) == 0 {
glog.Warningf("No cgroup driver is set in Docker")
glog.Warningf("Falling back to use the default driver: %q", cgroupDriver)
} else {
cgroupDriver = dockerInfo.CgroupDriver
if len(kubeCgroupDriver) != 0 && kubeCgroupDriver != cgroupDriver {
return nil, fmt.Errorf("misconfiguration: kubelet cgroup driver: %q is different from docker cgroup driver: %q", kubeCgroupDriver, cgroupDriver)
}
glog.Infof("Setting cgroupDriver to %s", cgroupDriver)
}
if len(kubeCgroupDriver) != 0 && kubeCgroupDriver != cgroupDriver {
return nil, fmt.Errorf("misconfiguration: kubelet cgroup driver: %q is different from docker cgroup driver: %q", kubeCgroupDriver, cgroupDriver)
}
glog.Infof("Setting cgroupDriver to %s", cgroupDriver)
ds.cgroupDriver = cgroupDriver
ds.versionCache = cache.NewObjectCache(
func() (interface{}, error) {