nixos-servers/legacy/projects/docker_swarm/ansible/playbooks/setup-nixos.yml

---

- name: Setup Docker Swarm primary
  hosts: primary
  tasks:
    - name: Create Docker Swarm
      docker_swarm:
    
    - name: Get Docker Swarm primary info
      docker_swarm_info:
        nodes: yes
        nodes_filters:
          name: primary
      register: swarm_info

- hosts: secondaries
  tasks:
    - name: Join Docker Swarm
      docker_swarm:
        state: join
        join_token: "{{ hostvars.primary.swarm_info.swarm_facts.JoinTokens.Manager }}"
        remote_addrs:
          - "{{ hostvars.primary.ansible_default_ipv4.address }}"