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As your Ansible automation grows, following best practices becomes essential for maintainability, security, and scalability. This lesson covers recommended patterns, Ansible Vault, collections, and CI/CD integration.
The official Ansible best practices suggest the following project structure:
production/ # Production inventory
staging/ # Staging inventory
group_vars/
+-- all.yml # Variables for all hosts
+-- webservers.yml # Variables for webservers
+-- dbservers.yml # Variables for dbservers
host_vars/
+-- web1.example.com.yml # Host-specific variables
roles/
+-- common/ # Base role for all servers
+-- nginx/ # Web server role
+-- postgresql/ # Database role
+-- monitoring/ # Monitoring agent role
playbooks/
+-- site.yml # Master playbook
+-- webservers.yml # Web server playbook
+-- dbservers.yml # Database playbook
ansible.cfg # Project configuration
requirements.yml # Role and collection dependencies
---
- import_playbook: playbooks/webservers.yml
- import_playbook: playbooks/dbservers.yml
This lets you run the entire infrastructure with one command:
ansible-playbook -i production site.yml
The most important principle in Ansible automation:
Every task should be safe to run multiple times without changing the result.
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