Ansible Documentation: Complete Guide to Finding and Using Official Docs
By Luca Berton · Published 2024-01-01 · Category: installation
Navigate Ansible documentation effectively. Official docs, module reference, collection docs, ansible-doc CLI, playbook keywords, configuration reference, and where to find help for every Ansible feature.
Where to Find Ansible Documentation
Ansible documentation is spread across several locations. Here's the definitive map.
Official Documentation Sites
| Resource | URL | What's There |
|----------|-----|-------------|
| Ansible Core docs |
Most-Used Documentation Pages
Bookmark these — you'll use them constantly: • Module Index — searchable list of every module • Playbook Keywords — every keyword you can use in plays, roles, blocks, and tasks • Special Variables — inventory_hostname, ansible_facts, hostvars, etc. • Jinja2 Filters — data transformation in templates • ansible.cfg Settings — every configuration option • Connection Plugins — SSH, WinRM, network_cli, httpapi
ansible-doc: Documentation From the Command Line
The ansible-doc command is the fastest way to check module documentation without opening a browser.
Look Up a Module
List All Modules
Other Plugin Types
JSON Output for Scripts
ansible-navigator doc (With EEs)
If you use Execution Environments, ansible-navigator doc shows documentation for modules inside the EE:
This is important because your local Ansible installation may have different collections than your EE. Always check documentation against the EE you'll run in production.
Reading Module Documentation
Every module doc page follows the same structure:
1. Synopsis What the module does in one paragraph.
2. Requirements Python libraries or system packages needed on the target host (not the control node).
3. Parameters The most important section. Each parameter shows: • Name — the parameter name • Type — string, boolean, list, dict, int, path, etc. • Required — yes/no • Default — default value if not specified • Choices — valid values for restricted parameters • Description — what it does
4. Notes Edge cases, version requirements, and gotchas.
5. Examples Copy-paste-ready YAML. Start here when learning a new module.
6. Return Values What the module returns in register — essential for when conditions and debug output.
Example: Reading the copy Module Doc
Key parameters to understand:
Collection Documentation
Find a Collection's Docs
Install a Collection and Read Its Docs
Collection Documentation Sites
Most major collections maintain their own documentation sites:
| Collection | Documentation |
|-----------|--------------|
| ansible.builtin |
Playbook Language Reference
Playbook Keywords
The playbook keywords reference lists every keyword by context:
Play-level keywords:
Task-level keywords:
Offline Documentation
Build Local Docs
ansible-doc Works Offline
ansible-doc reads documentation from installed module Python files — no internet required:
Getting Help
| Channel | URL | Best For |
|---------|-----|----------|
| Ansible Forum |
FAQ
Where is the official Ansible documentation?
The primary documentation site is
How do I check module documentation from the terminal?
Use ansible-doc
How do I find which collection a module belongs to?
Every module has a fully qualified collection name (FQCN) like ansible.builtin.copy or community.general.ufw. The format is namespace.collection.module. Run ansible-doc -l | grep module_name to find it.
Can I use Ansible documentation offline?
Yes. ansible-doc works completely offline using the installed module files. For full HTML documentation, clone the ansible-documentation repository and build it locally with Sphinx.
How do I keep up with Ansible changes?
Subscribe to the Ansible Bullhorn newsletter for release announcements. Check the changelog for version-specific changes. Follow ansible-core releases on GitHub.
Conclusion
Ansible documentation lives at docs.ansible.com for the core engine and collection modules, and at docs.redhat.com for AAP enterprise features. The ansible-doc CLI gives you instant offline access to any module's parameters, examples, and return values. Start with the Examples section of any module doc — it's the fastest path from "what does this do?" to working automation.
Related Articles • What is Ansible and How Does It Work? • Ansible Playbook Examples: Complete Beginner Guide • Ansible Roles: Complete Guide • AAP 2.6 ansible-navigator: Modern CLI for Automation Development • Ansible Collections: Install, Use, and Create Custom Collections
Category: installation