func createCBR0(wantCIDR *net.IPNet) error {
	// recreate cbr0 with wantCIDR
	if err := exec.Command("brctl", "addbr", "cbr0").Run(); err != nil {
		glog.Error(err)
		return err
	}
	if err := exec.Command("ip", "addr", "add", wantCIDR.String(), "dev", "cbr0").Run(); err != nil {
		glog.Error(err)
		return err
	}
	if err := exec.Command("ip", "link", "set", "dev", "cbr0", "mtu", "1460", "up").Run(); err != nil {
		glog.Error(err)
		return err
	}
	// restart docker
	// For now just log the error. The containerRuntime check will catch docker failures.
	// TODO (dawnchen) figure out what we should do for rkt here.
	if util.UsingSystemdInitSystem() {
		if err := exec.Command("systemctl", "restart", "docker").Run(); err != nil {
			glog.Error(err)
		}
	} else {
		if err := exec.Command("service", "docker", "restart").Run(); err != nil {
			glog.Error(err)
		}
	}
	glog.V(2).Info("Recreated cbr0 and restarted docker")
	return nil
}
示例#2
0
func createCBR0(wantCIDR *net.IPNet, babysitDaemons bool) error {
	// recreate cbr0 with wantCIDR
	if err := exec.Command("brctl", "addbr", "cbr0").Run(); err != nil {
		glog.Error(err)
		return err
	}
	if err := exec.Command("ip", "addr", "add", wantCIDR.String(), "dev", "cbr0").Run(); err != nil {
		glog.Error(err)
		return err
	}
	if err := exec.Command("ip", "link", "set", "dev", "cbr0", "mtu", "1460", "up").Run(); err != nil {
		glog.Error(err)
		return err
	}
	// Stop docker so that babysitter process can restart it again with proper configurations and
	// checkpoint file (https://github.com/docker/docker/issues/18283). It is safe to kill docker
	// process here since CIDR can be changed only once for a given node object, and node is marked
	// as NotReady until the docker daemon is restarted with the newly configured custom bridge.
	// TODO (dawnchen): Remove this once corrupted checkpoint issue is fixed.
	//
	// For now just log the error. The containerRuntime check will catch docker failures.
	// TODO (dawnchen) figure out what we should do for rkt here.
	if babysitDaemons {
		if err := exec.Command("pkill", "-KILL", "docker").Run(); err != nil {
			glog.Error(err)
		}
	} else if util.UsingSystemdInitSystem() {
		if err := exec.Command("systemctl", "restart", "docker").Run(); err != nil {
			glog.Error(err)
		}
	} else {
		if err := exec.Command("service", "docker", "restart").Run(); err != nil {
			glog.Error(err)
		}
	}
	glog.V(2).Info("Recreated cbr0 and restarted docker")
	return nil
}