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real-world-examples

🌍 Real-World Ansible Examples from Your Project​

This document walks through real Ansible examples taken directly from your /home/ansible/ structure. It includes playbooks, inventories, roles, templates, and variable management — all applied in real-world scenarios.

📜 site.yaml — Main Playbook​

---
- name: Generate reports for report servers
  hosts: demo_prod_aws
  become: yes
  vars_files:
    - ../vars/main.yml
  roles:
    - goaccess-report
    - report
    - ssh-key-reset

Optional setups are commented for:

  • Promtail, Node Exporter, and Tailscale
  • NGINX setup
  • Utilities install

📂 Inventory Example: inventory/test.ini​

[test]
Portfolio ansible_host=13.201.191.80 ansible_port=33000 ansible_user=root

⚙️ Apache Role Logic​

📄 roles/apache/tasks/main.yaml

- name: Set Apache package & service names
  set_fact:
    apache_pkg: "{{ os_pkg_map[ansible_os_family] | default('httpd') }}"
    apache_svc: "{{ os_pkg_map[ansible_os_family] | default('httpd') }}"
  vars:
    os_pkg_map:
      Debian: apache2
      RedHat: httpd
      Amazon: httpd
      Alpine: apache2

- name: Install Apache
  package:
    name: "{{ apache_pkg }}"
    state: present

- name: Enable and start Apache
  service:
    name: "{{ apache_svc }}"
    enabled: yes
    state: started
  notify: Restart Apache

📄 roles/apache/handlers/main.yaml

- name: Restart Apache
  service:
    name: "{{ apache_svc }}"
    state: restarted

📊 Report Role: System Audit​

📄 roles/report/tasks/main.yaml performs actions like:

  • Gather OS details
  • Detect languages: Python, Node.js, PHP, MySQL
  • Check for services like NGINX, Apache, Tailscale
  • Disk usage on /, /var, /www
  • Export reports to control machine via Jinja2

📄 Template: roles/report/templates/main-txt.j2

===============================
📊 Host Info & OS
===============================
Hostname: {{ hostname_cmd.stdout }}
OS: {{ os_release.stdout }}
...
Disk Usage:
{% for line in disk_usage_var.stdout_lines %}- {{ line }}{% endfor %}

🌐 NGINX Role Logic​

📄 roles/nginx/tasks/main.yaml

- name: Stop Apache if running
  service:
    name: "{{ item }}"
    state: stopped
    enabled: no
  loop:
    - apache2
    - httpd
  when: apache_status.stdout == "active"

- name: Install NGINX
  package:
    name: nginx
    state: present

- name: Enable and start NGINX
  service:
    name: nginx
    enabled: yes
    state: started

📦 Variable Definitions​

📄 vars/main.yml

promtail_version: "2.5.0"
node_exporter_version: "1.8.1"
nginx_port: 80
apache_port: 80

report_dir: "/home/devops/Documents/.../reports/"
goaccess_report_dir: "/home/devops/.../reports/goaccess/"

log_path: /var/log/nginx/access.log
log_format: COMBINED
timezone: Asia/Kolkata
date_format: "+%Y-%m-%d"
remote_report_path: /tmp/
cpu_mem_summary_filename: process-summary.txt

✅ Summary​

This setup includes everything you'd expect in a real infrastructure:

  • 🎯 Host targeting via inventory
  • 🔁 Reusable roles (Apache, NGINX, Report)
  • 📄 System diagnostics & reports
  • 🧾 Templated output for auditing
  • 📥 Centralized variable management

🚀 This is a powerful example of how to structure and scale Ansible for production environments.