```
- name: Print the gateway for each host when defined
  ansible.builtin.debug:
    msg: System {{ inventory_hostname }} has gateway {{ ansible_default_ipv4.gateway }}
  when: ansible_default_ipv4.gateway is defined

- name: Get uptime information
  ansible.builtin.shell: /usr/bin/uptime
  register: result

- name: Print return information from the previous task
  ansible.builtin.debug:
    var: result
    verbosity: 2

- name: Display all variables/facts known for a host
  ansible.builtin.debug:
    var: hostvars[inventory_hostname]
    verbosity: 4

- name: Prints two lines of messages, but only if there is an environment value set
  ansible.builtin.debug:
    msg:
    - "Provisioning based on YOUR_KEY which is: {{ lookup('ansible.builtin.env', 'YOUR_KEY') }}"
    - "These servers were built using the password of '{{ password_used }}'. Please retain this for later use."
```

---
https://docs.ansible.com/ansible/latest/collections/ansible/builtin/debug_module.html