++ hostname -s + HOSTNAME=instance + PORTNAME=octavia-health-manager-port-instance ++ openstack port show octavia-health-manager-port-instance -c id -f value + HM_PORT_ID=835f855c-cef1-4a7f-9851-7480657dd61d ++ openstack port show octavia-health-manager-port-instance -c mac_address -f value + HM_PORT_MAC=fa:16:3e:8f:41:aa + echo 835f855c-cef1-4a7f-9851-7480657dd61d + echo fa:16:3e:8f:41:aa