Method GenerateExpectedCgroupParent

core/docker_service.go:444–457

GenerateExpectedCgroupParent returns cgroup parent in syntax expected by cgroup driver

(cgroupParent string)

// GenerateExpectedCgroupParent returns cgroup parent in syntax expected by cgroup driver
func (ds *dockerService) GenerateExpectedCgroupParent(cgroupParent string) (string, error) {
	if cgroupParent != "" {
		// if docker uses the systemd cgroup driver, it expects *.slice style names for cgroup parent.
		// if we configured kubelet to use --cgroup-driver=cgroupfs, and docker is configured to use systemd driver
		// docker will fail to launch the container because the name we provide will not be a valid slice.
		// this is a very good thing.
		if ds.cgroupDriver == "systemd" {
			// Pass only the last component of the cgroup path to systemd.
			cgroupParent = path.Base(cgroupParent)
		}
	}
	logrus.Debugf("Setting cgroup parent to (%s)", cgroupParent)
	return cgroupParent, nil
}

// checkVersionCompatibility verifies whether docker is in a compatible version.
func (ds *dockerService) checkVersionCompatibility() error {