ansible/docker.yml

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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
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- hosts: all:!{{ azure_proxy_host }}
  become: yes
  roles:
    - docker

- hosts: swarmmanager
  become: yes
  tasks:
    - name: get swarm status
      shell: >
        set -o pipefail && docker info | grep 'Swarm:' | sed 's/\s*Swarm\:\s*//'
      args:
        executable: bash
      register: swarm_status
      changed_when: "'active' not in swarm_status.stdout_lines"
    - name: initialize swarm
      shell: |
        docker swarm leave --force || echo "leaving swarm for multiple setups"
        docker swarm init --advertise-addr={{ ansible_default_ipv4.address }}:2377
      when: "'active' not in swarm_status.stdout_lines"
    - name: get swarm token
      command: docker swarm join-token -q worker
      register: swarm_token
      changed_when: "'active' not in swarm_status.stdout_lines"

- hosts: workers:!swarmmanager
  become: yes
  vars:
    swarm_token_stdout: "{{ hostvars[groups['swarmmanager'][0]]['swarm_token']['stdout'] }}"
    manager_ip: "{{ hostvars[groups['swarmmanager'][0]]['ansible_default_ipv4']['address'] }}"
  tasks:
    - name: get swarm status
      shell: >
        set -o pipefail && docker info | grep 'Swarm:' | sed 's/\s*Swarm\:\s*//'
      args:
        executable: bash
      register: swarm_status
      changed_when: "'active' not in swarm_status.stdout_lines"
    - name: join worker to swarm
      shell: |
        docker swarm leave || echo "Not part of a swarm."
        docker swarm join --token={{ swarm_token_stdout }} {{ manager_ip }}:2377
      when: "'active' not in swarm_status.stdout_lines"