ansible
Ansible automation and configuration management patterns. Use when writing Ansible playbooks, roles, or automating infrastructure configuration and deployment tasks.
What this skill does
# Ansible Skill
This skill provides Ansible automation patterns and best practices.
## Playbook Structure
```yaml
---
- name: Configure web servers
hosts: webservers
become: true
vars:
http_port: 80
tasks:
- name: Install nginx
ansible.builtin.apt:
name: nginx
state: present
notify: Restart nginx
handlers:
- name: Restart nginx
ansible.builtin.service:
name: nginx
state: restarted
```
## Role Structure
```
roles/
└── webserver/
├── defaults/main.yml # Default variables
├── handlers/main.yml # Handler definitions
├── tasks/main.yml # Task list
├── templates/ # Jinja2 templates
├── files/ # Static files
└── vars/main.yml # Role variables
```
## Best Practices
### Use Fully Qualified Collection Names
```yaml
# ✅ Good
- ansible.builtin.apt:
name: nginx
# ❌ Bad (ambiguous)
- apt:
name: nginx
```
### Idempotent Tasks
```yaml
# Tasks should be safe to run multiple times
- name: Ensure config exists
ansible.builtin.template:
src: config.j2
dest: /etc/app/config.yml
# Only changes if content differs
```
### Use Handlers for Service Restarts
```yaml
tasks:
- name: Update config
template:
src: nginx.conf.j2
dest: /etc/nginx/nginx.conf
notify: Restart nginx
handlers:
- name: Restart nginx
service:
name: nginx
state: restarted
```
## Inventory Best Practices
```ini
[webservers]
web1.example.com
web2.example.com
[dbservers]
db1.example.com
[production:children]
webservers
dbservers
```
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