[SOLVED] Proxmox cloud-init not working on Ubuntu 24 Server/Desktop

[midgetseeker]

Hello all,

I'm in the process of adopting Ubuntu 24 as the next upgrade in my infra but on validation it looks like cloud-init doesn't work anymore.

My host:

root@proxmox-server:~# pveversion
pve-manager/8.1.4/ec5affc9e41f1d79 (running kernel: 6.5.11-8-pve)

Later edit:

Turns out that cloud-init config is disabled by default on U24 server/desktop.
To enable it AFTER you've added a cloud-init drive and applied the pve config you need to run the below command and reboot:

sudo cloud-init clean --machine-id

Hope this helps others from head scratching.
Regards.

 

[bbgeek17]

Turns out that cloud-init config is disabled by default on U24 server/desktop.

Ubuntu produces specific images for cloud deployment - https://cloud-images.ubuntu.com/. The Desktop and Server variants are not meant for cloud deployment, so its not surprising that they lack CloudInit by default.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[midgetseeker]

Ubuntu produces specific images for cloud deployment - https://cloud-images.ubuntu.com/. The Desktop and Server variants are not meant for cloud deployment, so its not surprising that they lack CloudInit by default.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

I know that but the cloud-init datasource from proxmox works on Ubuntu 22 just fine.

I have no way to automate my VM deployment if cloud-init is not working. I'm using the ansible proxmox modules to provision VM's from templates in a playbook.

It works ok on U22, but U24 is... microsofty

 

[midgetseeker]

Turns out that U24 doesn't like the IDE bus anymore.

It's happy to boot from an IDE bus cd-rom but not load cloud-init from there.

The fix seems to need a change from VirtIO-SCSI-Single to VirtIO-SCSI as the main controller and map the cloud-init drive to a scsi bus id.

The example config that works for me looks like this:
agent: enabled=1,fstrim_cloned_disks=1
bios: ovmf
boot: c
bootdisk: scsi0
cipassword: /etc/yomomma
ciupgrade: 0
ciuser: yomamma
cores: 4
cpu: x86-64-v2-AES
efidisk0: yomamma_disks:vm-000-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
ipconfig0: ip=192.168.500.500/24,gw=192.168.500.500
localtime: 1
memory: 4096
meta: creation-qemu=8.1.5,ctime=1714376435
name: u24-test
nameserver: 192.168.500.500
net0: virtio=12:23:34:45:56:67,bridge=vmbr0,firewall=1
numa: 0
onboot: 1
ostype: l26
scsi0: yomamma_disks_disks:vm-000-disk-1,iothread=1,size=100G,ssd=1
scsi1: yomamma_disks_disks:vm-000-cloudinit,media=cdrom
scsihw: virtio-scsi-pci
searchdomain: local service.consul node.consul
smbios1: uuid=yomamma
sockets: 1
sshkeys: ssh-rsa yomamma
vga: memory=128
vmgenid: yomamma

 

[bbgeek17]

There is a known compatibility issue with IDE cdrom and EFI based bios.
The working combinations are: efi/seabios+scsi, seabios+ide.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[midgetseeker]

There is a known compatibility issue with IDE cdrom and EFI based bios.
The working combinations are: efi/seabios+scsi, seabios+ide.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

Thanks for the info, makes sense as I've been using seabios and as soon as i've switched to efi everything changed.

 

[Urbaman]

Hi,

Trying to setup cloudinit for ubuntu 24.0.4.1, seabios.
No way to make it work, both IDE and SCSI for cloudinit disk.