Disable cloud-init auto updates inside VM

[Samuele Bistoletti]

Hi,
Anyone knows if it is possible to disable cloud unit apt auto upgrades inside VMs? I have many Ubuntu 18.04 VMs configured with cloud init in Proxmox, and kernel updates are started automatically, so after a reboot I find a new kernel version. I don't want so because every time I have to recompile some kernel dependencies, manually.
I tried to edit cloud init config but Proxmox overwrite it on VM restart. Is there a way to disable auto upgrades from Proxmox itself for VMs? Or maybe there is a way to make it from inside the VM in a way that Proxmox will not overwrite the configuration?

Thanks in advance

 

[t.lamprecht]

That has nothing to do with cloud init... That would happen with every ubuntu installation.

This is caused by an apt.conf, check

grep -ri unattended /etc/apt/apt.conf.d/

to see where, either add an override ala:

 echo 'APT::Periodic::Unattended-Upgrade "1";' > /etc/apt/apt.conf.d/99-no-auto-upgrade.conf

add the "linux-image*" (kernel) packages to a Unattended-Upgrade::Package-Blacklist { } setting, see
https://help.ubuntu.com/community/A...s#Using_the_.22unattended-upgrades.22_package

 

[t.lamprecht]

Also, depending on what extra kernel module you use, it could be worth to see if there's a -dkms package, which would handle kernel upgrades automatically.

 

[Samuele Bistoletti]

Thanks for the suggestions, I will try to study in deep the problem. The strange thing is that when I installed Ubuntu 18.04, during install process, I disabled automatic upgrades.