ansible_inventory_example

; playbook
- hosts: "{{ target }}"
  roles:
    - foo
    - bar

; inventory file
[target]
target01 myvar=some-value-1
target02 myvar=some-value-2
target03 myvar=some-value-3
target04 myvar=some-value-4
target05 myvar=some-value-5

[source]
source01 myvar=some-value-s01 ansible_host=1.1.1.1
source02 myvar=some-value-s02 ansible_host=1.1.1.2
source03 myvar=some-value-s03 ansible_host=1.1.1.3