70 lines
2.9 KiB
YAML
70 lines
2.9 KiB
YAML
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---
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- name: Check cluster swarm status
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run_once: true
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block:
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- name: Fetch cluster server swarm info
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delegate_to: "{{ item }}"
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ansible.builtin.command:
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cmd: !unsafe docker info --format '{{json .Swarm}}'
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changed_when: false
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register: _docker_cluster_swarm_state_raw
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loop: "{{ groups.cluster }}"
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- name: Process cluster server swarm info
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vars:
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_docker_cluster_swarm_state: {}
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ansible.builtin.set_fact:
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_docker_cluster_swarm_state: "{{ _docker_cluster_swarm_state | combine({item.item: (item.stdout | from_json)}) }}"
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loop: "{{ _docker_cluster_swarm_state_raw.results }}"
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loop_control:
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label: "{{ item.item }}"
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- name: Identify swarm managers
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vars:
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_docker_cluster_swarm_managers: []
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when: item.value.LocalNodeState == 'active' and item.value.ControlAvailable
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ansible.builtin.set_fact:
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_docker_cluster_swarm_managers: "{{ _docker_cluster_swarm_managers + [item.key] }}"
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loop: "{{ _docker_cluster_swarm_state | dict2items }}"
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loop_control:
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label: "{{ item.key }}"
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- name: Check that swarm managers were discovered
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ansible.builtin.assert:
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that:
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- _docker_cluster_swarm_managers
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fail_msg: >-
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ERROR: None of the member cluster servers ({{ groups.cluster | join(', ') }}) are joined to
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a docker swarm or is a swarm manager. Please join at least one cluster server to a swarm and
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promote it to swarm manager
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success_msg: >-
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Identified {{ _docker_cluster_swarm_managers | count }} swarm managers
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({{ _docker_cluster_swarm_managers | join(', ') }})
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- name: Determine swarm manager cluster IDs
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vars:
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_docker_cluster_swarm_manager_cluster_ids: []
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ansible.builtin.set_fact:
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_docker_cluster_swarm_manager_cluster_ids: "{{ _docker_cluster_swarm_manager_cluster_ids + [_docker_cluster_swarm_state[item].Cluster.ID] }}"
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loop: "{{ _docker_cluster_swarm_managers }}"
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- name: Check swarm managers are part of the same swarm
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ansible.builtin.assert:
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that:
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- _docker_cluster_swarm_manager_cluster_ids | unique | count == 1
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fail_msg: >-
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ERROR: Swarm managers ({{ _docker_cluster_swarm_managers | join(', ') }}) appear to be
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joined to different swarms
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(IDs {{ _docker_cluster_swarm_manager_cluster_ids | join(', ') }})
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success_msg: >-
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Swarm managers are joined to swarm with ID
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{{ _docker_cluster_swarm_manager_cluster_ids[0] }}
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- name: Determine swarm manager to use for host configuration
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ansible.builtin.set_fact:
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_docker_swarm_manager: "{{ _docker_cluster_swarm_managers[0] }}"
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- name: Determine whether host needs to be added to the swarm
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ansible.builtin.set_fact:
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_docker_swarm_needs_join: "{{ not _docker_cluster_swarm_state[inventory_hostname].Cluster.ID | default('') == _docker_cluster_swarm_manager_cluster_ids[0] }}"
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