$known_actions []= "attach-pcu";
// expects: node_id, pcu_id, port (pcu_id <0 means detach)
$known_actions []= "reboot-node-with-pcu";
$known_actions []= "attach-pcu";
// expects: node_id, pcu_id, port (pcu_id <0 means detach)
$known_actions []= "reboot-node-with-pcu";