---

- name: Use hostname module to set hostname, or failback to command module
  block:
    - name: Set hostname for host using hostname module
      ansible.builtin.hostname:
        name: "{{ inventory_hostname }}"
      notify:
        - "Restart_syslog_{{ ansible_distribution | lower }}_{{ ansible_distribution_major_version }}"

  rescue:
    - name: Unable to set hostname
      ansible.builtin.debug:
        msg: "Unable to set hostname for {{ ansible_hostname }} to {{ inventory_hostname }}."

...