KVM
Contents
Fedora 28
I had removed zfs-fuse, which also removed a number of kvm modules that I needed. To re-install I was able to follow the following link [1]
sudo dnf install libvirt-daemon sudo systemctl enable libvirtd sudo systemctl start libvirtd sudo dnf install qemu-kvm qemu-img libvirt-python python-virtinst libvirt-client virt-install virt-viewer device-mapper-libs libvirt-daemon-driver-qemu libvirt-daemon-config-network libvirt-daemon-kvm
Create Storage Domain
I have a ZFS pool already established, with several volumes in use. I will be creating a new volume dedicated to this purpose and will set it as one of two pools. The other being the ISO directory where I keep ISOs.
virsh # pool-list Name State Autostart ------------------------------------------- default active yes michael active yes qemu active yes virsh # pool-autostart --pool default --disable Pool default unmarked as autostarted virsh # pool-undefine --pool default Pool default undefined virsh # pool-autostart --pool michael --disable Pool michael unmarked as autostarted virsh # pool-list Name State Autostart ------------------------------------------- default active no localstorage active no michael active no qemu active no
Now I can create the new pool. I am going to use the most basic config options.
virsh # pool-create-as default --type dir --target /raid5/libvirt Pool default created virsh # pool-autostart --pool default Pool default marked as autostarted virsh # pool-list Name State Autostart ------------------------------------------- default active yes michael active no qemu active no virsh #
Networking
Remove Default Network
To remove the default network from the host. This can conflict with other services running if this is a shared environment. In my case I run a DNS server off the host, and the default network uses DNS forwarding with dnsmasq. When dnsmasq is running it takes port 53 which prevents my DNS service from running.
[root@nas ~]# virsh
Welcome to virsh, the virtualization interactive terminal.
Type: 'help' for help with commands
'quit' to quit
virsh # net-destroy default
Network default destroyed
virsh # net-list
Name State Autostart Persistent
----------------------------------------------------------
virsh # exit
Setup Bridged Network
I already had a bridge created for LXC containers, it only made sense to use it for KVM guests as well.
- Create the XML file[3]. My existing bridge name is virb0.
<network> <name>bridge1</name> <bridge name="virbr0" /> <forward mode="bridge" /> </network>
- Create the network using virsh
virsh # net-list Name State Autostart Persistent ---------------------------------------------------------- vvirsh # net-define --file br.xml Network bridge1 defined from br.xml virsh # net-list Name State Autostart Persistent ---------------------------------------------------------- virsh # net-start --network bridge1 Network bridge1 started virsh # net-list Name State Autostart Persistent ---------------------------------------------------------- bridge1 active no yes
- Set to auto start
virsh # net-autostart --network bridge1 Network bridge1 marked as autostarted
