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Ansible
Manage groups of computers remotely over SSH. (use the /etc/ansible/hosts file to add new groups/hosts).
Some subcommands such as ansible galaxy have their own usage documentation.
More information: https://www.ansible.com/.
- List hosts belonging to a group:
ansible {{group}} --list-hosts
- Ping a group of hosts by invoking the ping module:
ansible {{group}} -m ping
- Display facts about a group of hosts by invoking the setup module:
ansible {{group}} -m setup
- Execute a command on a group of hosts by invoking command module with arguments:
ansible {{group}} -m command -a '{{my_command}}'
- Execute a command with administrative privileges:
ansible {{group}} --become --ask-become-pass -m command -a '{{my_command}}'
- Execute a command using a custom inventory file:
ansible {{group}} -i {{inventory_file}} -m command -a '{{my_command}}'
- List the groups in an inventory:
ansible localhost -m debug -a '{{var=groups.keys()}}'
ansible.cfg
Used to store defaults values for ansible. It can be either in
/etc/ansible or locally. Local files overwrites the /etc/ansible file.inventory
Ansible inventory is a collection of hosts and their associated variables. It can be either in a YAML or INI format. Inventory files can be used to define variables for each host, create groups of hosts, and assign variables to those groups. Additionally, inventory can be dynamically generated by scripts, cloud providers, and other external sources.