Merge pull request 'feat: Add Prometheus installation role and playbook' (#1) from feature/prometheus-installation into main

Reviewed-on: #1

ansible.cfg

@@ -3,7 +3,6 @@ inventory = inventories/production/hosts
 host_key_checking = False
 interpreter_python = /usr/bin/python3
 gathering = smart
-roles_path = ./roles
 
 [ssh_connection]
 pipelining = True

playbooks/monitoring/deploy_all_node_exporters.yml

@@ -1,15 +0,0 @@
----
-- name: Deploy Node Exporter to ALL hosts
-  hosts: all
-  become: yes
-  gather_facts: yes
-  
-  pre_tasks:
-    - name: Update apt cache
-      apt:
-        update_cache: yes
-      when: ansible_os_family == 'Debian'
-  
-  roles:
-    - role: node_exporter
-      tags: node_exporter

roles/node_exporter/defaults/main.yml

@@ -1,3 +0,0 @@
----
-node_exporter_version: "1.7.0"
-node_exporter_port: 9100

roles/node_exporter/tasks/main.yml

@@ -1,103 +0,0 @@
----
-- name: Install required packages
-  apt:
-    name:
-      - wget
-      - tar
-    state: present
-    update_cache: yes
-  tags: node_exporter
-
-- name: Create node_exporter user
-  user:
-    name: node_exporter
-    system: yes
-    shell: /bin/false
-    home: /nonexistent
-    comment: "Node Exporter Service User"
-  tags: node_exporter
-
-- name: Download Node Exporter
-  get_url:
-    url: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.linux-amd64.tar.gz"
-    dest: "/tmp/node_exporter-{{ node_exporter_version }}.tar.gz"
-    timeout: 30
-    validate_certs: no
-  tags: node_exporter
-
-- name: Extract Node Exporter
-  unarchive:
-    src: "/tmp/node_exporter-{{ node_exporter_version }}.tar.gz"
-    dest: "/tmp/"
-    remote_src: yes
-    creates: "/tmp/node_exporter-{{ node_exporter_version }}.linux-amd64"
-  tags: node_exporter
-
-- name: Install Node Exporter binary
-  copy:
-    src: "/tmp/node_exporter-{{ node_exporter_version }}.linux-amd64/node_exporter"
-    dest: "/usr/local/bin/node_exporter"
-    owner: node_exporter
-    group: node_exporter
-    mode: '0755'
-    remote_src: yes
-  tags: node_exporter
-
-- name: Create systemd service for LXC
-  template:
-    src: node_exporter.service.j2
-    dest: /etc/systemd/system/node_exporter.service
-    owner: root
-    group: root
-    mode: '0644'
-  tags: node_exporter
-
-- name: Create textfile collector directory
-  file:
-    path: /var/lib/node_exporter/textfile_collector
-    state: directory
-    owner: node_exporter
-    group: node_exporter
-    mode: '0755'
-  tags: node_exporter
-
-- name: Clean up temp files
-  file:
-    path: "/tmp/node_exporter-{{ node_exporter_version }}.tar.gz"
-    state: absent
-  tags: node_exporter
-
-- name: Clean up extracted directory
-  file:
-    path: "/tmp/node_exporter-{{ node_exporter_version }}.linux-amd64"
-    state: absent
-  tags: node_exporter
-
-- name: Reload systemd
-  systemd:
-    daemon_reload: yes
-  tags: node_exporter
-
-- name: Enable and start Node Exporter
-  systemd:
-    name: node_exporter
-    enabled: yes
-    state: started
-    daemon_reload: yes
-  tags: node_exporter
-
-- name: Configure UFW for Node Exporter
-  ufw:
-    rule: allow
-    port: "{{ node_exporter_port }}"
-    proto: tcp
-    comment: "Node Exporter metrics"
-  tags: node_exporter
-
-- name: Verify Node Exporter is running
-  wait_for:
-    port: "{{ node_exporter_port }}"
-    host: "{{ ansible_host }}"
-    delay: 3
-    timeout: 60
-  tags: node_exporter

roles/node_exporter/templates/node_exporter.service.j2

@@ -1,30 +0,0 @@
-[Unit]
-Description=Node Exporter
-After=network.target
-Wants=network.target
-
-[Service]
-User=node_exporter
-Group=node_exporter
-Type=simple
-ExecStart=/usr/local/bin/node_exporter \
-  --collector.cpu \
-  --collector.diskstats \
-  --collector.filesystem \
-  --collector.loadavg \
-  --collector.meminfo \
-  --collector.netdev \
-  --collector.netstat \
-  --collector.stat \
-  --collector.time \
-  --collector.uname \
-  --collector.vmstat \
-  --collector.systemd \
-  --collector.textfile \
-  --web.listen-address=:{{ node_exporter_port }}
-
-Restart=always
-RestartSec=3
-
-[Install]
-WantedBy=multi-user.target