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Automate configuration management and application deployment with Ansible. Use when tasks mention ansible-playbook, inventory files, Ansible roles, ad-hoc commands, ansible-galaxy, or agentless SSH automation.
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| name | ansible |
| description | Automate configuration management and application deployment with Ansible. Use when tasks mention ansible-playbook, inventory files, Ansible roles, ad-hoc commands, ansible-galaxy, or agentless SSH automation. |
| license | MIT |
| metadata | {"author":"greedychipmunk","version":"1.0"} |
| Request | Reference | Load When |
|---|---|---|
| Install tool, SSH setup, ansible.cfg | resources/install-and-setup.md | User needs to install Ansible or configure control node |
| Inventory files, group_vars, host_vars | resources/inventory-and-variables.md | User needs inventory structure or variable precedence |
| Playbook authoring, roles, modules | resources/playbook-patterns.md | User needs play structure, task patterns, or common modules |
| CLI commands, vault, galaxy | resources/command-cookbook.md | User needs ansible/ansible-playbook/ansible-vault/galaxy commands |
# 1. Define your inventory
cat > inventory.ini <<'EOF'
[web]
web1.example.com
web2.example.com
[db]
db1.example.com
EOF
# 2. Test connectivity (ad-hoc ping)
ansible all -i inventory.ini -m ping
# 3. Run a playbook
ansible-playbook -i inventory.ini site.yml
# 4. Dry-run a playbook (check mode — no changes)
ansible-playbook -i inventory.ini site.yml --check --diff
| Concept | Description |
|---|---|
| Control node | Machine where Ansible runs (requires Python; no agent needed on targets) |
| Managed node | Target host reached via SSH (Linux) or WinRM (Windows) |
| Inventory | List of managed nodes (INI, YAML, or dynamic script) |
| Playbook | YAML file defining ordered plays and tasks |
| Role | Reusable directory structure (tasks, handlers, templates, vars) |
| Module | Idempotent unit of work (copy, service, package, user, command…) |
| Collection | Packaged set of roles, modules, and plugins from Ansible Galaxy |
--check --diff first to preview changes without applying them.--limit to target a subset of hosts before running against all inventory.command and shell modules when an idempotent module exists.become: true) requires explicit approval — confirm privilege escalation scope.ansible-vault encrypt — never commit plaintext passwords.# Install a role then dry-run the playbook to preview changes
ansible-galaxy role install geerlingguy.java
ansible-playbook -i inventory.ini site.yml --check --diff
ansible all -m ping -i inventory.iniansible-playbook site.yml -i inventory.ini --check --diffansible-playbook site.yml -i inventory.ini --limit web1.example.comansible-playbook site.yml -i inventory.iniresources/install-and-setup.mdresources/inventory-and-variables.mdresources/playbook-patterns.mdresources/command-cookbook.md