hostname works

ansible/infra/nodito/33_proxmox_debian_cloud_template.yml

@@ -78,15 +78,14 @@
       set_fact:
         ssh_keys_list: "{{ ssh_key_content.content | b64decode | split('\n') | select('match', '^ssh-') | list }}"
 
-    - name: Write cloud-init user-data snippet to install qemu-guest-agent
+    - name: Write cloud-init vendor-data snippet to install qemu-guest-agent
       copy:
         dest: "{{ zfs_pool_mountpoint }}/snippets/{{ qemu_agent_snippet_filename }}"
         mode: '0644'
         content: |
           #cloud-config
-          user: {{ proxmox_ciuser }}
-          ssh_authorized_keys:
-          {{ ssh_keys_list | to_nice_yaml | indent(10, first=True) }}
+          # Vendor-data snippet: Proxmox will automatically set hostname from VM name when using vendor-data
+          # User info (ciuser/sshkeys) is set separately via Terraform/Proxmox parameters
           package_update: true
           package_upgrade: true
           packages:
@@ -164,7 +163,7 @@
             ]
             + (proxmox_ci_upgrade | bool
                | ternary(['--ciupgrade 1'], []))
-            + ['--cicustom user=local:snippets/' ~ qemu_agent_snippet_filename]
+            + ['--cicustom vendor=local:snippets/' ~ qemu_agent_snippet_filename]
           }}
       when:
         - vmid_config_check.rc != 0 or not vm_already_template | default(false) or ide2_removed.changed | default(false)

tofu/nodito/main.tf

@@ -42,11 +42,13 @@ resource "proxmox_vm_qemu" "vm" {
   }
 
   # Cloud-init: user, ssh keys, IP, and custom snippet for qemu-guest-agent
-  # Note: Using 'local' storage for snippets (not ZFS) as ZFS storage doesn't properly support snippet paths
+  # Note: Using vendor-data snippet (instead of user-data) allows Proxmox to automatically
+  # set the hostname from the VM name. User info is set separately via ciuser/sshkeys.
+  # Using 'local' storage for snippets (not ZFS) as ZFS storage doesn't properly support snippet paths
   ciuser    = var.cloud_init_user
   sshkeys   = var.ssh_authorized_keys
   ipconfig0 = try(each.value.ipconfig0, local.default_ipconfig0)
-  cicustom = "user=local:snippets/user-data-qemu-agent.yaml"
+  cicustom  = "vendor=local:snippets/user-data-qemu-agent.yaml"
 
   # Disk on ZFS storage
   disk {