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/.
To run a command on multiple instances at once - using servers group from inventory.yml
ansible -u ansible -i inventory.yml servers -m shell -a "ls /var"
List hosts belonging to a group
ansible group --list-hosts
Ping a group of hosts by invoking the ping module
Display facts about a group of hosts by invoking the setup module
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()'
Ignore errors
- name: task name
ansible.builtin.taskname
ignore_errors: true