create_server.yml

---
- name: create lxc server
  command: lxc init ubuntu:trusty server
  ignore_errors: yes

- name: start instance if already created
  shell: lxc start server && sleep 10
  ignore_errors: yes

- name: copy key to new lxc instance
  command: lxc file push --uid=1000 --gid=1000 --mode=0644 pubkey server/home/ubuntu/.ssh/authorized_keys

- name: get server ip
  shell: lxc info server | grep eth0 | head -n 1 | cut -f 3
  register: ip

- name: add to servers group
  add_host:
    hostname: '{{ ip.stdout }}'
    groups: servers
    ansible_ssh_user: ubuntu