====== libvirt ======

[[wp>libvirt]] is an open source API, daemon and management tool for managing platform virtualization. It can be used to manage KVM, Xen, VMware ESX, QEMU and other virtualization technologies. These APIs are widely used in the orchestration layer of hypervisors in the development of a cloud-based solution.


==== Sparse image ====

<file>
qemu-img create -f qcow2 /var/lib/libvirt/images/test.qcow2 64G
</file>

==== Resize image ====

<file>
qemu-img resize /var/lib/libvirt/images/test.qcow2 +10G
</file>

and then resize partition table and filesystem.

==== Installation ====

<file>
virt-install -r 4096 --accelerate -n test \
-f /var/lib/libvirt/images/test.qcow2 \
--cdrom /CentOS-6.5-x86_64-bin-DVD1.iso \
--network=type=direct,source=eth0 \
--graphics vnc,listen=0.0.0.0,password=somepass \
--noautoconsole
</file>

(connect using vnc client to server IP to finish installation)

==== Deleting guest ====

<file>
virsh
destroy test
undefine test
</file>

==== Autostart ====

<file>
virsh autostart test
</file>

==== Changing guest configuration (config file) ====

<file>
virsh edit test
</file>