galera-swarm-lxc-ansible/roles/lxc_swarm/tasks/swarm.yml

---
- name: Prepare swarm manager
  docker_swarm:
    state: present
    advertise_addr: "{{ interface }}"
  when: inventory_hostname in groups['manager']

- name: Get the Manager join-token
  shell: docker swarm join-token --quiet worker
  register: worker_token
  when: inventory_hostname in groups['manager']

- name: Prepare swarm workers
  docker_swarm:
    state: join
    advertise_addr: "{{ interface }}" 
    join_token: "{{ hostvars[groups['manager'][0]]['worker_token']['stdout'] }}"
    #remote_addrs: "{{ hostvars[groups['manager'][0]]['ansible_lxcbr0_ipv4.address'] }}"
    remote_addrs: "10.0.3.1"
  when: inventory_hostname in groups['workers']

- name: Prepare docker mysql data volume
  file: 
     path: /var/lib/mysql
     state: directory
     mode: '0777'
     recurse: true
  when: inventory_hostname in groups['workers']

#- name: Prepare docker mysql configuration volume
#  file:
#     path: /etc/container_data/mysql
#     state: directory
#     mode: '0777'
#     recurse: true
#  when: inventory_hostname in groups['workers']

- name: Add docker labels for galera master and secondary nodes
  shell: |
    docker node update --label-add node1=true worker1
    docker node update --label-add node2=true worker2
  when: inventory_hostname in groups['manager']

#- name: Add docker labels for galera secondary nodes
#  docker_node:
#    labels:
#      hostname: 'worker2'
#      node2: true
#  when: inventory_hostname in groups['workers']

- name: Pull 'colinmollenhour/mariadb-galera-swarm' docker image
  docker_image:
    name: 'colinmollenhour/mariadb-galera-swarm'
    source: pull
  when: inventory_hostname in groups['workers']

- name: Touch flag bootstrap file inside mariadb volume
  shell: touch /var/lib/mysql/new-cluster
  when: inventory_hostname in groups['workers'][0]