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Hi PVE team,
Thank you for your continual work. I really like working with Proxmox and it
has been great overall. I want to make a feature request to adjust the logic
used in the cloud init portion of the codebase.
Topic: Cloud-Init Hostname and FQDN assignments in the userdata section.
Request: Move these into the VENDOR data section or META data section;
preferrably the VENDOR data section.
Why: As it currently is, users can't create their own userdata file to pass to
cloud init, without having major problems with device hostnames and fqdn
settings. When a user passes a custom userdata file, that file takes precedence
and the automatic config doesn't get generated. This includes the hostname and
fqdn not being generated automatically. Users can statically set the hostname
in their custom userdata file, but now that single hostname is set for ALL
their machines that use that custom userdata snippet file. The problem
compounds when I have dozens or hundreds of VMs. I need a way to pass my own
cloud init custom file and NOT mess with the dynamic hostname generation. That
is why I'm asking for you to move the hostname and fqdns setting to the vendor
data portion of cloud init. The vendor data section is a good place for the
hostname and fqdn setting, because the vendor data file is meant for the
hypervisor / hosting platform. The userdata section is meant for the user's
config and the user config can override the vendordata as needed / desired. I
can then create all the custom userdata code I need.
Rebuttal: The most common thing I have seen on the internet regarding this
topic is that people put all their code in the vendor data section and pray it
works. That or they create a whole bunch of meta data files and they put the
hostnames there which is still static and now we have a whole lot of files to
manage and create. Neither of these options are how cloud init is meant to be
used as I understand.
The file and function that need adjustment is this one ->
https://github.com/proxmox/qemu-server/blob/master/src/PVE/QemuServer/Cloudinit.pm#L127
Thank you for your consideration. Please let me know if you need anything from
me.
Thank you,
Austin Hunt
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