ansible: Best Practice for host specific playbooks - ansible

Question

I'm trying to clean up my ansible infrastructure and wanted to stick to the best practices as much as possible.
My problem is that I have host-specific tasks that I naturally want to map into the logic as sensibly as possible.
If I want to have both, "best practice" and host-specific tasks, I end up with the following simplified file structure:
├── dbservers.yml
├── generic.yml
├── group_templates/
│   └── webservers/
├── group_vars/
│   └── webservers.yml
├── host_files/
│   └── d-ws323/
├── host_tasks/
│   └── d-ws323.yml
├── host_vars/
│   └── d-ws323/
├── production.ini
├── roles/
├── secrets.txt
├── site.yml
└── webservers.yml
My approch looks like this:
site.yml is the master playbook:
---
# file: site.yml
- import_playbook: webservers.yml
- import_playbook: dbservers.yml
- import_playbook: generic.yml
And generic.yml:
---
- hosts: all
become: yes
roles:
- generic
tasks:
- local_action: stat path=host_tasks/{{ inventory_hostname }}.yml
register: host_file
become: no
- include: host_playbooks/{{ inventory_hostname }}.yml
when: host_file.stat.exists
Does it make sense?

Answer 1

What we do is create roles that have playbooks and then assign these roles to hosts or groups of hosts. Based on that, we would have a directory layout similar to:
.
├── group_vars
├── hosts
├── host_vars
│   └── host-01.yml
├── roles
│   └── webservers
│   ├── files
│   ├── tasks
│   │   └── main.yml
│   └── templates
└── webservers.yml
The hosts file is the inventory file, which you're gonna put all your hosts and groups, and the webservers.yml is the playbook with the following content:
---
- hosts: host-01
become: true
user: ubuntu
roles:
- webservers
If you have to make any distro-specific arrangement, you should do that inside the role playbook. Playbooks outside roles should exist only for conecting groups or hosts to roles, or very trivial tasks, if possible.
Best regards!