[PVE-User] Non-configurable options in cloud-init config

[David Limbeck]

Yes, that's currently the only way to disable package upgrades. Feel 
free to open an enhancement in our bugtracker. 
(https://bugzilla.proxmox.com/)

Just a quick note, the cloud-init version in CentOS is old and some 
features don't work correctly or at all.

On 1/28/19 3:47 PM, Zhuoyun Wei wrote:
> Hi,
>
> I am trying to set up our first Proxmox server. I am using the GenericCloud pre-built image by CentOS [1]. We use the exact same image already in a public cloud provider. By re-using the same image, we could replicate our production VMs in our office.
>
> After importing and starting the first VM in Proxmox, I found that something was not quite right: the packages in the Proxmox VM were newer than the packages in the cloud provider VM. After checking logs, it turned out that cloud-init did a full system upgrade on first boot (it upgraded CentOS 7.5 to CentOS 7.6).
>
> A further inspection revealed the roots of the issue: there was a hard-coded "package_upgrade: true" config key in the generated cloud-init config iso [2].
>
> There was no way to override this config key as of cloud-init 0.7.9 [3], which was used in the latest CentOS GenericCloud image. Could Proxmox make a little improvement here and allow user to opt out the full system upgrade after the first boot of the VM? The only workaround I could see now is edit the CloudInit.pm file and comment out that line.
>
> Thanks.
>
>
> Links:
>
> [1] https://cloud.centos.org/centos/7/images/
> [2] https://git.proxmox.com/?p=qemu-server.git;a=blob;f=PVE/QemuServer/Cloudinit.pm;h=5be820c22d58b0cc0014e7dab6412f8d2db9132d;hb=refs/heads/master#l135
> [3] https://cloudinit.readthedocs.io/en/0.7.9/topics/modules.html#package-update-upgrade-install
>