99 lines
3.9 KiB
YAML
99 lines
3.9 KiB
YAML
- name: Initialize Docker Swarm on the first manager
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hosts: manager[0]
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become: true
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tasks:
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- name: Check if node is already a manager
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command: docker node inspect self --format '{{ "{{ .ManagerStatus }}" }}'
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register: manager_status
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ignore_errors: true
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changed_when: false
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- name: Initialize Docker Swarm if not already a manager
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command: docker swarm init --advertise-addr {{ ansible_default_ipv4.address }}
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register: swarm_init
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when: manager_status.rc != 0
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failed_when: swarm_init.rc != 0 and "'This node is already part of a swarm' not in swarm_init.stderr"
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changed_when: "'Swarm initialized' in swarm_init.stdout"
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- name: Get manager join-token
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command: docker swarm join-token manager -q
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register: manager_join_token
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- name: Get worker join-token
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command: docker swarm join-token worker -q
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register: worker_join_token
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- name: Set fact with join details
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set_fact:
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swarm_leader_ip: "{{ ansible_default_ipv4.address }}"
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swarm_manager_token: "{{ manager_join_token.stdout }}"
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swarm_worker_token: "{{ worker_join_token.stdout }}"
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- name: Propagate join info globally
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add_host:
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name: "swarm_info_host"
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swarm_leader_ip: "{{ swarm_leader_ip }}"
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swarm_manager_token: "{{ swarm_manager_token }}"
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swarm_worker_token: "{{ swarm_worker_token }}"
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changed_when: false
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- name: Join additional managers to Swarm
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hosts: swarm_managers:!manager[0]
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become: true
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vars:
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swarm_info: "{{ hostvars['swarm_info_host'] }}"
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tasks:
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- name: Check if already in a swarm
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command: docker info --format '{{ "{{ .Swarm.LocalNodeState }}" }}'
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register: manager2_swarm_status
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ignore_errors: true
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changed_when: false
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- name: Join as manager (if not already part of a swarm)
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command: >
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docker swarm join --token {{ swarm_info['swarm_manager_token'] }}
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{{ swarm_info['swarm_leader_ip'] }}:2377
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when: manager2_swarm_status.stdout != "active"
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- name: Join swarm_workers to Swarm
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hosts: swarm_workers
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become: true
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vars:
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swarm_info: "{{ hostvars['swarm_info_host'] }}"
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tasks:
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- name: Check if node is already part of a swarm
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command: docker info --format '{{ "{{ .Swarm.LocalNodeState }}" }}'
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register: swarm_worker_status
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ignore_errors: true
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changed_when: false
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- name: Join as worker (if not already part of a swarm)
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command: >
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docker swarm join --token {{ swarm_info['swarm_worker_token'] }}
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{{ swarm_info['swarm_leader_ip'] }}:2377
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when: swarm_worker_status.stdout != "active"
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- name: Verify all nodes are present in the swarm
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hosts: manager[0]
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become: true
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tasks:
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- name: Get list of all nodes and their roles in the swarm
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command: docker node ls --format '{{ "{{ .Hostname }}|{{ .ManagerStatus }}" }}'
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register: swarm_nodes
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- name: Parse manager and worker counts
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set_fact:
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manager_count: "{{ swarm_nodes.stdout_lines | select('search', 'Leader|Reachable') | list | length }}"
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worker_count: "{{ swarm_nodes.stdout_lines | select('search', '^((?!Leader|Reachable).)*$') | list | length }}"
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- name: Show parsed node roles
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debug:
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msg:
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- "Managers found: {{ manager_count }} (expected: {{ groups['swarm_managers'] | length }})"
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- "Workers found: {{ worker_count }} (expected: {{ groups['swarm_workers'] | length }})"
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- name: Fail if manager or worker counts do not match inventory
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fail:
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msg: |
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Swarm node count mismatch!
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Managers found: {{ manager_count }} (expected: {{ groups['swarm_managers'] | length }})
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Workers found: {{ worker_count }} (expected: {{ groups['swarm_workers'] | length }})
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All nodes: {{ swarm_nodes.stdout_lines }}
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when: (manager_count | int) != (groups['swarm_managers'] | length) or (worker_count | int) != (groups['swarm_workers'] | length) |