Re: non-root bridge set-up on Fedora 39 aarch64

On 2/19/24 10:21 AM, Chuck Lever wrote: > Hello- > > I'm somewhat new to the libvirt world, and I've encountered a problem > that needs better troubleshooting skills than I have. I've searched > Google/Ecosia and stackoverflow without finding a solution. > > I set up libvirt on an x86_64 system without a problem, but on my > new aarch64 / Fedora 39 system, virsh doesn't seem to want to start > virbr0 when run from my own user account: > > cel@boudin:~/kdevops$ virsh net-start default > error: Failed to start network default > error: error creating bridge interface virbr0: Operation not permitted If you run virsh as a normal user, it will auto-create an unprivileged ("session mode") libvirt instance, and connect to that rather than the single privileged (ie. run as root) libvirt instance that is managed by systemd. Because this libvirt is running as a normal user with no elevated privileges, it is unable to create a virtual network. What you probably wanted to do was to connect to the system-wide privileged libvirt, you can do this by either running virsh as root (or with sudo), or by using   # virsh -c qemu:///system rather than straight "virsh". Whichever method you choose, you'll want to do that for all of your virsh commands, both for creating/managing networks and guests.