ansible_issues_9085

ansible.cfg

[defaults]
hash_behaviour=merge
nocows=true

group_vars__ansible-os-family-Debian

---
authorized_keys:
  root:
    user1:
    user2:

host_vars__linux1.example.com

---
authorized_keys:
  root:
    user3:

hosts

[linuxServers]
linux1.example.com

site.yml

---
- hosts: linux1.example.com
  connection: local
  tasks:

    - name: group_by ansible_os_family
      group_by: key=ansible-os-family-{{ ansible_os_family }}
      changed_when: false

    - name: output dictionary
      debug: var=authorized_keys