---
- name: Check if swarm is already Initialized
  shell: docker node ls
  register: swarm_status
  ignore_errors: true

- name: Check node state.
  register: node_state
  shell: "docker info --format '{{ '{{' }}.Swarm.LocalNodeState{{ '}}' }}'"
  ignore_errors: true

- name: Add managers to the swarm
  shell: >
    docker swarm join
    --token {{ hostvars.admin.manager_token }}
    {{ hostvars.admin.ansible_host }}:2377
  when: swarm_status.rc != 0 and node_state.stdout not in [ 'active', 'locked', 'error' ]