Update to 2021-12-01 19:13

roles/common/tasks/hostname.yml

@@ -0,0 +1,11 @@
+---
+
+- name: Set system hostname
+  hostname: name={{ system_hostname | default(inventory_hostname | regex_replace('^([^\.]+)\..*','\\1')) }}
+
+- name: Prevent PVE from changing /etc/hostname
+  copy: content='' dest=/etc/.pve-ignore.hostname
+  when: ansible_virtualization_type == 'lxc'
+
+...
+