Re: kvm customized /etc/ file?

[didier gaumet <didier.gaumet@gmail.com>]

Le 14/11/2025 à 15:16, Franco Martelli a écrit :
> Hi,
>
> running the command:
>
> ~$ kvm -cdrom debian-live-13.0.0-amd64-kde.iso -m 8g
>
> I can start a virtual machine for the Debian Live ISO image. I'd like to 
> customize the virtual machine. Is it possible to have a .conf file which 
> it contains all the options for the virtual machine, eg. number of 
> cores, memory size, etc… without specify all the options on the CLI?
>
> I'd like to have a single .conf default file to use for all the ISO, 
> reading kvm(1) man-page seems nothing is explained, only options for the 
> CLI.
>
> Thanks in advance, kind regards.

Hello Franco,

I do not use kvm/qemu directly, only through virt-manager (GUI).
I have no experience with it, but you could probably do what you want to 
achieve by using virtsh or wirt-qemu-run. In both cases the guest 
configuration is described in a file, the libvirt way.
https://manpages.debian.org/trixie/libvirt-daemon-driver-qemu/virt-qemu-run.1.en.html