---
- name: Install Prometheus mysqld-exporter
  apt:
    update_cache: true
    name: prometheus-mysqld-exporter
  register: apt_result
  retries: 3
  until: apt_result is succeeded

- name: Make Prometheus mysqld-exporter listen on adm only
  lineinfile:
    path: /etc/default/prometheus-mysqld-exporter
    regexp: ^ARGS=
    line: |
      ARGS="--web.listen-address={{ prometheus_mysqld_exporter.listen_addr }}:9104"
  notify: Restart prometheus-mysqld-exporter

# You need to create the prometheus account, RTFM.
- name: Configure MySQL connection
  lineinfile:
    path: /etc/default/prometheus-mysqld-exporter
    regexp: DATA_SOURCE_NAME="prometheus@unix(/run/mysqld/mysqld.sock)/"
    line: DATA_SOURCE_NAME="prometheus@unix(/run/mysqld/mysqld.sock)/"
  notify: Restart prometheus-mysqld-exporter