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Add full support for Proxmox #181
Description
The default username for which the password/ssh keys are set is configurable in the configuration file.
But in the case of Windows VMs on Proxmox, the username customization ends up in the USER_DATA file:
#cloud-config
hostname: avladu-test-proxmox
manage_etc_hosts: true
fqdn: avladu-test-proxmox.maas.local
user: AdminProxmox
password: Passw0rd
chpasswd:
expire: False
users:
- default
package_upgrade: true
Discussion is needed to see if the Proxmox community can make the same format as OpenStack's or cloudbase-init needs to offer that option. See: 39e2f6f.
The upstream discussion is here: https://bugzilla.proxmox.com/show_bug.cgi?id=4493.
Thanks!
Activity
puffi commentedon Feb 13, 2026
Thank you for opening the issue.
I think I've actually tried setting the
admin_username, but it's been a long time since I last tested it.I'll have to test it again.
Is there a list of all config options for each of the services for a quick lookup of what's supported?
Or is it only documented in code so far?
The issue though with the username is, that we don't handle admin user differently from a normal user. With cloud-init and Linux you can simply specify
rootas username, and it will change it for that user.Windows seems to separate admin users from normal users?
In Proxmox VE we currently don't have an option to specify either admin or normal user.
ader1990 commentedon Feb 13, 2026
Hello, for ConfigDrive -> you can take a look here: https://cloudbase-init.readthedocs.io/en/latest/services.html#openstack-configuration-drive and for NoCloud here: https://cloudbase-init.readthedocs.io/en/latest/services.html#nocloud-configuration-drive (Capabilities section).
The best way to go forward would be to have here a complete example of the contents for each type of config drives created by Proxmox and we can start from there. Full ISOs attached here can work too.
Cloudbase-init has functional tests based on these metadata examples https://github.com/cloudbase/cloudbase-init-test-resources/tree/master/openstack/cloudbase-init-metadata and https://github.com/cloudbase/cloudbase-init-test-resources/tree/master/nocloud.
Once we have a good complete ISO examples, I can change the https://github.com/cloudbase/cloudbase-init-test-resources accordingly and then update cloudbase-init code to implement the desired functionality.
Thanks.
ader1990 commentedon Feb 16, 2026
Hello, did a first run with a Proxmox produced
cidataISO here -> and added my findings cloudbase/cloudbase-init-test-resources#19. There are a few things to be discussed about how the implementation / feasibility of it: cloudbase/cloudbase-init-test-resources#19.Will leave the notes here as well, and rename this issue to a more generic one.
Proxmox has two types for ISO based configdrives that can be created,
one for Windows, and one for non-Windows OS types.
The Windows type is a configdrivev2 ISO type, that is similar with the OpenStack configdrive v2: the label is config-2.
NoCloud ISO produced by Proxmox has the following structure:
The currently created Proxmox cidata ISO usage with NoCloud provider
shows the following errors:
The support for
manage_etc_hostscannot be added, as it cannot be mapped to an existing Windows feature.The support for
fqdncan be added easily, as it is the same as theset_hostnameone.The support for
userwith thedefaultentry cannot be added, as it cannot be mapped to an existing Windows feature. This feature is in some sense implicit.The support for
passwordcan be added as per https://cloudbase-init.readthedocs.io/en/latest/plugins.html#setting-password-main.The support for
chpasswdcan be added as per https://cloudbase-init.readthedocs.io/en/latest/plugins.html#setting-password-main.The support for
package_upgradecan be added as per the https://cloudbase-init.readthedocs.io/en/latest/plugins.html#windows-auto-updates-main.The support for v2 network metadata is in progress here: #164
[-]Implement default username retrieval for Proxmox[/-][+]Add full support for Proxmox[/+]