Tool cheatsheet

Ansible 2 Cheatsheet

Run ad-hoc commands and playbooks, manage inventories, roles, collections and secrets with Ansible.

Ad-hoc commands

Check the Ansible version — Print the version, config file and module paths.
Ping all hosts — Test that Ansible can connect to every host in the inventory.
Run a command on a group — Run a shell command on every host in the webservers group.
Show a host's facts — Print the facts Ansible collects about a host.
Copy a file to hosts — Copy a file with the copy module.
Restart a service — Restart a service on a group of hosts.

Run a playbook — Run a playbook against an inventory.
Dry run with diff — Show what would change, without changing anything.
Check playbook syntax — Check the playbook for syntax errors without running it.
Limit to some hosts — Run only against one host or group from the play.
Run only tagged tasks — Run tasks that have a given tag.
Pass variables — Set a variable on the command line, which overrides other sources.
Ask for the sudo password — Prompt for the password used for privilege escalation.
Increase verbosity — Show connection details. Add more v's for more detail.
List the tasks in a playbook — Show the tasks and hosts without running anything.
Playbook skeleton — A minimal playbook that installs and starts nginx.

Show the inventory — Print the inventory as JSON, with variables.
Show the inventory as a tree — Print the groups and hosts as a tree.
Install a role — Download a role from Ansible Galaxy.
Install a collection — Download a collection from Ansible Galaxy.
Install from a requirements file — Install the roles and collections listed in requirements.yml.
Create a role skeleton — Create the standard folder layout for a role.
Read module documentation — Show a module's options and examples in the terminal.
Lint playbooks — Check playbooks for style problems and common mistakes. Needs ansible-lint installed.

Create an encrypted file — Create a new file that is encrypted at rest. You are asked for a vault password.
Edit an encrypted file — Decrypt, edit and re-encrypt a file.
Encrypt an existing file — Encrypt an existing file in place.
View an encrypted file — Print the decrypted contents without changing the file.
Run a playbook that uses vault — Prompt for the vault password when the playbook runs.

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