ansible/roles/haproxy/tasks/main.yml

---
- name: Install HAProxy
  package:
    name: haproxy
    state: present
  notify:
    - Restart HAProxy

- name: Create HAProxy group
  group:
    name: haproxy
    gid: 20001
  notify:
    - Restart HAProxy

- name: Create HAProxy user
  user:
    name: haproxy
    uid: 20001
    group: haproxy
    create_home: no
    home: /var/empty
  notify:
    - Restart HAProxy

- name: Add /var/log/haproxy to fstab
  mount:
    path: /var/log/haproxy
    src: tmpfs
    fstype: tmpfs
    opts: rw,size=128m,mode=750,uid=20000,gid=20000
    state: mounted

- name: Create HAProxy service directories
  file:
    path: '/etc/s6-rc/service/{{ item }}'
    state: directory
    owner: root
    group: wheel
    mode: 0755
  with_items:
    - haproxy
    - haproxy/env
    - haproxy/data
    - haproxy-log
    - haproxy-log/env

- name: Generate HAProxy service scripts
  template:
    dest: '/etc/s6-rc/service/{{ item }}'
    src: '{{ item }}.j2'
    mode: 0555
    owner: root
    group: wheel
  with_items:
    - haproxy/run
    - haproxy/finish
    - haproxy/data/check
    - haproxy-log/run
    - haproxy-log/finish
  notify:
    - Reload s6-rc
    - Restart HAProxy

- name: Generate HAProxy service configuration
  copy:
    dest: '/etc/s6-rc/service/{{ item.name }}'
    content: '{{ item.content }}'
    mode: 0444
    owner: root
    group: wheel
  loop_control:
    label: '{{ item.name }} = {{ item.content }}'
  notify:
    - Reload s6-rc
    - Restart HAProxy
  with_items:
    - name: haproxy/type
      content: longrun
    - name: haproxy/notification-fd
      content: 3
    - name: haproxy/producer-for
      content: haproxy-log
    - name: haproxy/env/NAME
      content: haproxy
    - name: haproxy/env/PATH
      content: /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
    - name: haproxy/env/BIND_V4
      content: '{{ haproxy_v4 }}'
    - name: haproxy/env/BIND_V6
      content: '{{ haproxy_v6 }}'

    - name: haproxy-log/type
      content: longrun
    - name: haproxy-log/notification-fd
      content: 3
    - name: haproxy-log/consumer-for
      content: haproxy
    - name: haproxy-log/env/NAME
      content: haproxy
    - name: haproxy-log/env/PATH
      content: /sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin
    - name: haproxy-log/env/MODE
      content: '750'
    - name: haproxy-log/env/USER
      content: s6-log
    - name: haproxy-log/env/GROUP
      content: s6-log
    - name: haproxy-log/env/DIR
      content: /var/log/haproxy

- name: Create HAProxy configuration directory
  file:
    path: /usr/local/etc/haproxy
    state: directory
    owner: root
    group: wheel
    mode: 0755

- name: Configure HAProxy
  template:
    dest: '/usr/local/etc/haproxy/{{ item }}'
    src: '{{ item }}.j2'
    owner: root
    group: wheel
    mode: 0444
  notify:
    - Reload HAProxy
  with_items:
    - defaults.cfg
    - global.cfg
    - http.cfg
    - sni.cfg

- name: Configure HAProxy HTTP backends
  template:
    dest: '/usr/local/etc/haproxy/http_{{ item.host }}.cfg'
    src: http_host.cfg.j2
    owner: root
    group: wheel
    mode: 0444
  notify:
    - Reload HAProxy
  with_items: '{{ haproxy_http }}'

- name: Configure HAProxy SNI backends
  template:
    dest: '/usr/local/etc/haproxy/sni_{{ item.host }}.cfg'
    src: sni_host.cfg.j2
    owner: root
    group: wheel
    mode: 0444
  notify:
    - Reload HAProxy
  with_items: '{{ haproxy_sni }}'

- name: Make sure the HTTP map exists
  command: env touch /usr/local/etc/haproxy/http.map
  args:
    creates: /usr/local/etc/haproxy/http.map
  notify:
    - Reload HAProxy

- name: Make sure the SNI map exists
  command: env touch /usr/local/etc/haproxy/sni.map
  args:
    creates: /usr/local/etc/haproxy/sni.map
  notify:
    - Reload HAProxy

- name: Enable HAProxy HTTP backends
  lineinfile:
    path: /usr/local/etc/haproxy/http.map
    regex: '^{{ item.host }} '
    line: '{{ item.host }} http_{{ item.host }}'
  notify:
    - Reload HAProxy
  with_items: '{{ haproxy_http }}'

- name: Enable HAProxy SNI backends
  lineinfile:
    path: /usr/local/etc/haproxy/sni.map
    regex: '^{{ item.host }} '
    line: '{{ item.host }} sni_{{ item.host }}'
  notify:
    - Reload HAProxy
  with_items: '{{ haproxy_sni }}'

- name: Flush handlers
  meta: flush_handlers

- name: Start HAProxy
  command: fdmove -c 2 1 s6-rc -u -v 2 change haproxy
  register: change
  changed_when: change.stdout | length > 0

- name: Enable HAProxy
  lineinfile:
    path: /etc/s6-rc/service/enabled/contents
    regexp: "^haproxy$"
    line: "haproxy"
  notify:
    - Reload s6-rc

- name: Flush handlers (again)
  meta: flush_handlers