ansible-consul/tasks/main.yml

---
- name: Read bootstrapped state
  stat:
    path: "{{ consul_bootstrap_state }}"
  register: bootstrap_state
  ignore_errors: true


- name: Include OS-specific variables
  include_vars: "{{ item }}"
  with_first_found:
    - files:
        - "{{ ansible_os_family }}-{{ ansible_distribution_major_version }}.yml"
        - "{{ ansible_os_family }}.yml"

- name: install package
  package:
    name: "{{ consul_os_package }}"
    state: present
  when: ansible_architecture is not search('arm*')

- name: encure data dir exist
  file:
    state: directory
    owner: consul
    path: "{{ consul_data_dir }}"
    mode: 0755

- block:
    - block:
        - name: Check for gossip encryption key on previously boostrapped server
          slurp:
            src: "{{ consul_config_path }}/config.json"
          register: consul_config_b64
          ignore_errors: true
        - debug:
            msg: "{{consul_config_b64}}"
        - name: Deserialize existing configuration
          set_fact:
            consul_config: "{{ consul_config_b64.content | b64decode | from_json }}"
          when: consul_config_b64.content is defined and consul_config_b64.content != ""

        - name: Save gossip encryption key from existing configuration
          set_fact:
            consul_raw_key: "{{ consul_config.encrypt }}"
          when: consul_config is defined

      when:
        - consul_raw_key is not defined
        - bootstrap_state.stat.exists | bool
        - inventory_hostname in consul_servers_list

    # Key provided by extra vars or the above block
    - name: Write gossip encryption key locally for use with new servers
      copy:
        content: "{{ consul_raw_key }}"
        dest: '/tmp/consul_raw.key'
        mode: 0600
      become: false
      vars:
        ansible_become: false
      no_log: true
      delegate_to: localhost
      changed_when: false
      when: consul_raw_key is defined

    # Generate new key if none was found
    - block:
        - name: Generate gossip encryption key
          shell: "PATH={{ consul_bin_path }}:$PATH consul keygen"
          register: consul_keygen

        - name: Write key locally to share with other nodes
          copy:
            content: "{{ consul_keygen.stdout }}"
            dest: '/tmp/consul_raw.key'
          become: false
          vars:
            ansible_become: false
          delegate_to: localhost

      no_log: true
      run_once: true
      when:
        # if files '/tmp/consul_raw.key' exist
        - lookup('first_found', dict(files=['/tmp/consul_raw.key'], skip=true)) | ternary(false, true)
        - not bootstrap_state.stat.exists | bool

    - name: Read gossip encryption key for servers that require it
      set_fact:
        consul_raw_key: "{{ lookup('file', '/tmp/consul_raw.key') }}"
      no_log: true
      when:
        - consul_raw_key is not defined

    - name: Delete gossip encryption key file
      file:
        path: '/tmp/consul_raw.key'
        state: absent
      become: false
      vars:
        ansible_become: false
      run_once: true
      delegate_to: localhost
      changed_when: false
  #no_log: true
  when:
    - consul_encrypt_enable | bool

- name: apply config template
  block:
    - name: server template
      template:
        src: config.json.j2
        dest: "{{ consul_config_path}}/config.json"
        owner: consul
        mode: 0644
  notify: reload consul configuration

- name: configure backup
  block:
    - name: copy backup script
      copy:
        dest: "{{ consul_data_dir }}/cs-backup.sh"
        mode: 0744
        owner: consul
        src: cs-backup.sh
    - name: consul snaphot cron.d
      cron:
        name: consul backup
        user: consul
        state: present
        job: "{{ consul_data_dir }}/cs-backup.sh {{ consul_backup_location }}"
        hour: "{{consul_cron_hour}}"
  when: consul_snapshot

- name: ensure service is started
  systemd:
    name: "{{  consul_service_name }}"
    state: started
    enabled: True

- name: Create bootstrapped state file
  file:
    dest: "{{ consul_bootstrap_state }}"
    state: touch
    mode: 0600
  when: not bootstrap_state.stat.exists

- include_tasks: dnsmasq.yml
  when: consul_dnsmasq_enable | bool