I have the same 2 problems. I managed to solve the second one by configuring the port's details inside the Nova::Server itself as follow:

server: type: OS::Nova::Server properties: name: restart_instance flavor: { get_param: flavor } image: { get_param: image } key_name: { get_param: key_name } availability_zone: { get_param: availability_zone } networks: - network: { get_param: network_id } security_groups: - { get_param: security_group_id } user_data: | #!/bin/bash -x touch /root/test echo "Hello, World!" > /root/test

Unfortunatly, I couldn't found a solution to the first problem, my instance is constantly being restarted

Einav.