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skylab-ansible/roles/swarm/tasks/join.yaml

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---
- name: Fetch join token from existing manager
delegate_to: "{{ _docker_swarm_manager }}"
changed_when: false
ansible.builtin.command:
cmd: docker swarm join-token manager --quiet
register: _docker_swarm_join_token
- name: Fetch manager addresses from existing manager
delegate_to: "{{ _docker_swarm_manager }}"
changed_when: false
ansible.builtin.command:
cmd: !unsafe docker info --format '{{json .Swarm.RemoteManagers}}'
register: _docker_swarm_manager_info_raw
- name: Process manager addresses
vars:
_docker_swarm_manager_addresses: []
ansible.builtin.set_fact:
_docker_swarm_manager_addresses: "{{ _docker_swarm_manager_addresses + [item.Addr] }}"
loop: "{{ _docker_swarm_manager_info_raw.stdout | from_json }}"
- name: Join node to swarm
vars:
ansible_python_interpreter: "{{ skylab_ansible_venv }}/bin/python"
community.docker.docker_swarm:
state: join
advertise_addr: "{{ lookup('vars', 'ansible_' + skylab_cluster.interface.internal).ipv4.address }}"
listen_addr: "{{ lookup('vars', 'ansible_' + skylab_cluster.interface.internal).ipv4.address }}"
remote_addrs: "{{ _docker_swarm_manager_addresses }}"
join_token: "{{ _docker_swarm_join_token.stdout.strip() }}"
- name: Fetch node swarm ID
ansible.builtin.command:
cmd: !unsafe docker info --format '{{ .Swarm.NodeID}}'
changed_when: false
register: _docker_node_id_raw
# For newly added nodes we don't want to have services be automatically scheduled on them
# until the configuration is complete. The node-up playbook will be responsible for updating
# the node to make it available in the cluster again
- name: Update node to drain
vars:
ansible_python_interpreter: "{{ skylab_ansible_venv }}/bin/python"
community.docker.docker_node:
availability: drain
hostname: "{{ _docker_node_id_raw.stdout.strip() }}"