The virt-manager tool is a graphical frontend to manage KVM virtual machines. While it may not win any prizes for its graphical design, it's a very useful and powerful piece of software.
Installation
/bin/su -c "dnf install virt-manager"
or
/bin/su -c "urpmi virt-manager"
It will automatically pull all dependencies such as qemu-kvm
After that you have to enable the libvirt daemon at boot time:
systemctl enable libvirtd
Start this daemon with:
systemctl start libvirtd
Permissions
As a normal user you don't have the right permissions to do anything, and it's difficult to get them. First add yourself to the kvm group:
/bin/su -c "usermod -aG kvm $USER"
and create a file /etc/polkit-1/rules.d/50-libvirt.rules with the following content:
/* Allow users in kvm group to manage the libvirt
daemon without authentication */
polkit.addRule(function(action, subject) {
if (action.id == "org.libvirt.unix.manage" &&
subject.isInGroup("kvm")) {
return polkit.Result.YES;
}
});
Logout, and you are ready to create virtual machines
Virtual Machines in Home
If you want to create a storage pool in your home directory, you have to add permissions on your home directory for the kvm group
/bin/su -c "setfacl -m g:kvm:rwx $HOME"
Shorewall
If you have enabled the Shorewall firewall, traffic from the virtual machine will be blocked.
Edit /etc/shorewall/interfaces and add the following lines:
virt virbr1 detect dhcp,routeback virt vnet+ detect destonly
Edit /etc/shorewall/zones and add the following line:
virt ipv4
Edit /etc/shorewall/policy and add the following line:
virt all ACCEPT info fw virt ACCEPT
Restart Shorewall:
/bin/su -c "shorewall restart"
