Is it possible to specify groups from two different inventory files for an Ansible playbook?

My playbook (/home/user/Ansible/dist/playbooks/test.yml):

- hosts: regional_clients
  tasks:
    - shell: /export/home/user/ansible_scripts/test.sh
      register: shellout
    - debug: var=shellout
- hosts: web_clients
  tasks:
    - shell: /var/www/html/webstart/release/ansible_scripts/test.sh 
      register: shellout
    - debug: var=shellout
    - command: echo catalina.sh start
      register: output
    - debug: var=output

The [regional_clients] group is specified in /home/user/Ansible/webproj/hosts and the [web_clients] group is specified in /home/user/Ansible/regions/hosts.

Is there a way I could make the above work? Currently, running the playbook will fail since neither [regional_clients] or [web_clients] are defined in the default inventory file /home/user/Ansible/dist/hosts.

Solution

Yes, you can write a simple shell script:

#!/bin/sh
cat /home/user/Ansible/webproj/hosts /home/user/Ansible/regions/hosts

and call it as a dynamic inventory in Ansible:

ansible-playbook -i my_script test.yml

^{This question, however, looks to me like a problem with your organisation, not a technical one. If your environment is so complex and maintained by different parties, then use some kind of configuration database (and a dynamic inventory in Ansible which would retrieve the data), instead of individual files in user's paths.}