Ansible: Add Unix group to user only if the group exists
Do you have anything to identify those different host types?
If not, you first need to check which groups exist on that host. You can do this with the command getent group | cut -d: -f1 which will output one group per line.
You can use this as separate task like so:
- shell: getent group | cut -d: -f1 register: unix_groupsThe registered result then can be used later when you want to add the user group
- user: ... when: "'some_group' in unix_groups.stdout_lines"