What are Ansible variables and how do I use them?

What are Ansible variables and how do I use them?

Ansible variables are used to store values that can be reused throughout your playbooks. They help in making your playbooks more dynamic and flexible.

Can you give me an example of how to define a variable in a playbook?

Sure! You can define a variable in a playbook like this:

- hosts: all
  vars:
    my_variable: 'Hello, World!'
  tasks:
    - name: Print the variable
      debug:
        msg: '{{ my_variable }}'

How do I pass variables from the command line?

You can pass variables from the command line using the -e option. For example:

ansible-playbook playbook.yml -e 'my_variable=Hello'

What is the difference between host variables and group variables?

Host variables are specific to a single host, while group variables apply to all hosts in a group. You can define them in inventory files or in separate variable files.