ansible

Ping all hosts in inventory

$ ansible all -m ping

$ ansible [webservers] -a "uptime"

$ ansible [webservers] -a "apt update" --become

$ ansible [hosts] -m [apt] -a "name=nginx state=present" --become

$ ansible -i [inventory.ini] all -m ping

ansible pattern [-m module] [-a args] [-i inventory] [options]

ansible is an agentless IT automation tool that executes tasks on remote systems over SSH. It uses a push-based model, requiring no software installation on managed nodes beyond Python and SSH access.
For ad-hoc commands, ansible executes modules against hosts matching a pattern. For complex automation, use ansible-playbook with YAML playbooks.

-m module

Module to execute (default: command)

Module arguments

Inventory file or path

Run operations with privilege escalation

Prompt for privilege escalation password

Connect as this user

Prompt for SSH password

Number of parallel processes

Increase verbosity

Dry run (don't make changes)

List hosts matching pattern

Requires Python on managed nodes. SSH key-based authentication is recommended. Windows hosts require WinRM instead of SSH. Large inventories benefit from using ansible-playbook.

Ansible was created by Michael DeHaan and released in 2012. Red Hat acquired Ansible Inc. in 2015. It has become one of the most popular configuration management and automation tools.

ansible-playbook(1), ansible-inventory(1), ansible-vault(1)