mono-infrastructure/ansible/playbooks/role-rocky-monitoring.yml

---
# Creates the first monitoring server
# Reccommended specs
# CPU: 2 cores
# Memory: 2GB
# Storage: a piece of string
- name: Install Prometheus
  hosts: monitoringservers
  become: true
  vars_files:
    - vars/vaults/encpass.yml
    - vars/monitoring.yml
    - vars/monitoring/alertmanager.yml
    - vars/monitoring/grafana.yml
    - vars/monitoring/prometheus.yml

  # This is to try to avoid the handler issue in pre/post tasks
  handlers:
    - import_tasks: handlers/main.yml

  pre_tasks:
    - name: Check if ansible cannot be run here
      stat:
        path: /etc/no-ansible
      register: no_ansible

    - name: Verify if we can run ansible
      assert:
        that:
          - "not no_ansible.stat.exists"
        success_msg: "We are able to run on this node"
        fail_msg: "/etc/no-ansible exists - skipping run on this node"

    - name: Install SELinux packages
      package:
        name: python3-policycoreutils.noarch
        state: present

  roles:
    - role: rockylinux.ipagetcert
      state: present
    - role: cloudalchemy.prometheus
      state: present
    - role: cloudalchemy.alertmanager
      state: present
    - role: cloudalchemy.grafana
      state: present

  post_tasks:
    - name: Open firewalld ports
      ansible.posix.firewalld:
        port: "{{ item.port }}"
        permanent: "{{ item.permanent }}"
        state: "{{ item.state }}"
      loop: "{{ monitoring_server_firewall_rules }}"

    - name: Touching run file that ansible has ran here
      file:
        path: /var/log/ansible.run
        state: touch
        mode: '0644'
        owner: root
        group: root

- name: Install Prometheus Node Exporter
  hosts: all
  become: true

  pre_tasks:
    - name: Install SELinux packages
      package:
        name: python3-policycoreutils.noarch
        state: present

  roles:
    - role: cloudalchemy.node-exporter
      state: present

  post_tasks:
    - name: Open firewall for node-exporter
      ansible.posix.firewalld:
        port: 9100/tcp
        permanent: true
        state: enabled