Proxmox support

[lukasmrtvy]

Proxmox does not support ignition, but one can probably trigger loading cloud-init from a static ignition file ( /var/lib/vz/snippets/ignition-run-cloud-init.json ). Passing ignition via -fw_cfg isn't solution, its just not possible for non root users, see https://forum.proxmox.com/threads/fedora-core-os-ignition-root-pam-api-tokens-restricted-from-using-qemu-args.108886/ for more info.

Trying this ( via root user in proxmox ):

qm create 9005 --name flatcar3510.2.1-qemu-template --memory 1024 --net0 virtio,bridge=vmbr0
qm importdisk 9005 flatcar_production_qemu_image.img local-lvm
qm set 9005 --scsihw virtio-scsi-pci --scsi0 local-lvm:vm-9005-disk-0
qm set 9005 --ide2  local-lvm:cloudinit
qm set 9005 --boot c --bootdisk scsi0
qm set 9005 --serial0 socket --vga serial0
qm set 9005 --args '-fw_cfg name=opt/org.flatcar-linux/config,file="/var/lib/vz/snippets/ignition-run-cloud-init.json"'
qm template 9005


cat /var/lib/vz/snippets/ignition-run-cloud-init.json
{
  "ignition": { "version": "2.2.0" },
  "systemd": {
    "units": [{
      "name": "run-cloud-init.service",
      "enabled": true,
      "contents": "[Service]\nType=oneshot\nExecStartPre=mkdir /media/iso\nExecStartPre=mount /dev/sr0 /media/iso\nExecStart=/usr/bin/coreos-cloudinit -from-configdrive /media/iso\n\n[Install]\nWantedBy=default.target"
    }]
  }
}

, but the VM cloned from this template does not fetch cloud-init settings set directly on VM via WebUI.

Debug:

/usr/bin/coreos-cloudinit -from-configdrive /media/iso
2023/05/24 19:28:34 Checking availability of "cloud-drive"
2023/05/24 19:28:34 Fetching user-data from datasource of type "cloud-drive"
2023/05/24 19:28:34 Attempting to read from "/media/iso/openstack/latest/user_data"
2023/05/24 19:28:34 Fetching meta-data from datasource of type "cloud-drive"
2023/05/24 19:28:34 Attempting to read from "/media/iso/openstack/latest/meta_data.json"
2023/05/24 19:28:34 Merging cloud-config from meta-data and user-data
2023/05/24 19:28:34 Ensuring runtime unit file "etcd.service" is unmasked
2023/05/24 19:28:34 Ensuring runtime unit file "etcd2.service" is unmasked
2023/05/24 19:28:34 Ensuring runtime unit file "fleet.service" is unmasked
2023/05/24 19:28:34 Ensuring runtime unit file "locksmithd.service" is unmasked

ls /media/iso/
meta-data  network-config  user-data  vendor-data

Thanks

[gabriel-samfira]

Hi!

I'm looking at updating coreos-cloudinit in the following months (as time permits). As part of that I'll try to add more datasources, including the NoCloud data source which proxmox seems to use. It should then be able to detect the iso labeled cidata and apply that cloud config.

Would that help?

[mritalian]

Seems maybe the OP lost interest, but I'm about to dabble in proxmox. I'd love to be able to use flatcar in my tf deployments there. Is there anything I can do to help?

[abuisine]

Hi folks, we've been working on proxmoxve support for flatcar.

The work has been two folds :

1. add proxmoxve cloudinit format support to afterburn
2. create a proxmoxve compatible OEM partition

The work on afterburn is ok (dns, ssh-keys, ip configuration, ...), you can follow-up an eventual merge through the following PR: coreos/afterburn#1023

The work on the OEM side of things consist of installing the modified afterburn, and then using typical OEM stuff to enable proxmoxve compatibility, we are building the stable versions on a regular basis: https://github.com/enix/flatcar-proxmoxve/releases

I must say we would prefer to have our work on afterburn merged, and avoid custom binary installation through the OEM partition ... hopefully it will happen at some point in the future. Then the flatcar project could build proxmoxve variants easily.

In the meantime, feel free to use our images or request other builds (beta / lts / ....)

[mcbenjemaa]

Hey,

Is there anything new?
I tried injecting an ISO with the `user data' containing the ignition, but it didn't work.

I would appreciate any help in this case.
I'm trying to add support for flat in our CAPI provider
ionos-cloud/cluster-api-provider-proxmox#302

[mritalian]

Pretty sure user data doesn't work in pmve like in esxi. The way I did it

resource "proxmox_virtual_environment_file" "ignition" {
	content_type = "snippets"
	datastore_id = local.datastore_id
	node_name    = local.node_name

	source_raw {
		data = module.ignition.rendered
		file_name = local.ignition_file_name
	}
}

...

resource "proxmox_virtual_environment_vm" "vm" {
....
	kvm_arguments = "-fw_cfg name=opt/org.flatcar-linux/config,file=/var/lib/vz/snippets/${local.ignition_file_name}"
....
}

[mcbenjemaa]

fw_cfg
We couldn't use arguments only with root user.

[mritalian]

@mcbenjemaa yes indeed fw_cfg requires root. Don't know of any other workaround.