pvc-ansible/roles/pvc/tasks/patroni/main.yml

---
- set_fact:
    package_list:
      - python3-psycopg2
      - python3-kazoo
      - python-psycopg2
      - python-kazoo
      - patroni
      - postgresql-11
    postgresql_version: 11
  when: debian_version|int == 10

- set_fact:
    package_list:
      - python3-psycopg2
      - python3-kazoo
      - patroni
      - postgresql
    postgresql_version: 13
  when: debian_version|int == 11

- set_fact:
    package_list:
      - python3-psycopg2
      - python3-kazoo
      - patroni
      - postgresql
    postgresql_version: 15
  when: debian_version|int == 12

- name: install patroni packages via apt
  apt:
    name: "{{ package_list }}"
    state: latest
    update-cache: yes
  register: apt_res
  retries: 5
  until: apt_res is success

- name: install Prometheus postgresql exporter if enabled
  apt:
    name:
      - prometheus-postgres-exporter
  register: apt_res
  retries: 5
  until: apt_res is success
  when: enable_prometheus_exporters is defined and enable_prometheus_exporters

- name: install Prometheus postgresql exporter config if enabled
  template:
    src: patroni/prometheus.env.j2
    dest: /etc/default/prometheus-postgres-exporter
    owner: prometheus
    group: prometheus
    mode: 0640
  notify:
    - restart prometheus-postgres
  when: enable_prometheus_exporters is defined and enable_prometheus_exporters

- name: stop and disable postgresql
  service:
    name: "{{ item }}"
    state: stopped
    enabled: no
  with_items:
    - "postgresql"
    - "postgresql@{{ postgresql_version }}-main"
  when: newhost is defined and newhost

- name: remove obsolete database directories
  file:
    dest: "{{ item }}"
    state: absent
  with_items:
    - "/etc/postgresql/{{ postgresql_version }}"
    - "/var/lib/postgresql/{{ postgresql_version }}"
  when: newhost is defined and newhost

- name: create patroni database directory
  file:
    dest: /var/lib/postgresql/patroni/pvc
    state: directory
    owner: postgres
    mode: 0700
  when: newhost is defined and newhost

- name: install postgresql customization configuration file
  template:
    src: patroni/postgresql.pvc.conf.j2
    dest: /etc/postgresql/postgresql.pvc.conf
    owner: postgres
    group: sudo
    mode: 0640
  notify: restart patroni

- name: install patroni configuration file
  template:
    src: patroni/patroni.yml.j2
    dest: /etc/patroni/config.yml
    owner: postgres
    group: postgres
    mode: 0640
  notify: restart patroni

- name: install check_mk agent check
  copy:
    src: patroni/postgres
    dest: /usr/lib/check_mk_agent/plugins/postgres
    mode: 0755

- name: install initial schema files
  copy:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    owner: postgres
    group: sudo
    mode: 0640
  with_items:
    - { src: "patroni/powerdns-schema.sql", dest: "/etc/postgresql/powerdns-schema.sql" }

- include: patroni/bootstrap.yml
  run_once: yes
  when: do_bootstrap is defined and do_bootstrap

- name: start but disable services (managed by PVC)
  service:
    name: "{{ item }}"
    state: started
    enabled: no
  ignore_errors: yes
  with_items:
    - patroni

- meta: flush_handlers