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Exercise: Cloning VMs in virt-manager
Cloning kvm1
In default KVM configuration, the VM disk images are stored in directory
/var/lib/libvirt/images and the VM configurations in
directory /etc/libvirt/qemu.
The image files take large space, so we need to create an additional folder to
store them:
Prepare kvm1 for cloning:
On the VM,
edit file /etc/hosts and remove the line containing 127.0.1.1 kvm1.
In the same file, also remove localhost in the line starting with '::1'. The line should look as follows now:
::1 ip6-localhost ip6-loopback
If there is file /etc/udev/rules.d/70-persistent-net.rules, then
remove it:
Execute command shutdown on the VM:
On the desktop, set the readable permission for all on the virtual drive:
Launch virt-manager. Right click
onto kvm1 and select to "clone". Name the cloned system kvm2.
For the storage option, select "Details",
then specify the new path: /home/hostadm/KVM/kvm2.qcow2
Keep the default configuration settings for the other parameters.
This will be a new VM with the
systems configurations originally set in kvm1.
After the cloning procedure is completed, boot kvm2:
Login
to the system as user hostadm, elevate privileges by running
sudo -s, then follow the procedure below to change the host name from
kvm1 to kvm2:
Edit file /etc/hostname and replace kvm1 by kvm2.
Reset the machine ID by running the following commands on kvm2:
Clear the DHCP leased IP settings:
Execute command reboot on kvm2:
Exit the VM console with ^] key combination.
Login to kvm2 again after it boots up:
Check if the system recognizes itself as kvm2:
Shutdown kvm2 by running command shutdown on it:
When the VM console exits, make sure kvm2 is no longer running:
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