if [ -f /etc/docker/daemon.json ]; then
    echo "Contents of the old docker config"
    cat /etc/docker/daemon.json
  fi

  cat <<EOF >/etc/docker/daemon.json
{
EOF

addockeropt "\"pidfile\": \"/var/run/docker.pid\",
  \"iptables\": false,
  \"ip-masq\": false,"

  echo "setting log-level"
  if [[ "${TEST_CLUSTER:-}" == "true" ]]; then
    addockeropt "\"log-level\": \"debug\","
  else

	// p.runSafePointFn == 1 and will call runSafePointFn when
	// changing its status to _Pidle/_Psyscall.

	// Run safe point function for all idle Ps. sched.pidle will
	// not change because we hold sched.lock.
	for p := sched.pidle.ptr(); p != nil; p = p.link.ptr() {
		if atomic.Cas(&p.runSafePointFn, 1, 0) {
			fn(p)
			sched.safePointWait--
		}
	}

	wait := sched.safePointWait > 0