virt-config

About

virt-config can update configuration of a virtual machine via libvirt and guestfs.

Setup

Install Dependencies

$ sudo apt-get install libguestfs0 libguestfs-tools python-guestfs
$ sudo update-guestfs-appliance

Get Sources

$ git clone https://github.com/akagisho/virt-config

Usage

Usage:
    virt-config.py [options] domname
Options:
    -i new_ipaddr: update ip-address
    -h new_hostname: update hostname
    -c: confirm result

Example

First, clone a VM as usual.

$ sudo virt-clone \
    --original tmpl-ubuntu1204 \
    --file /var/lib/libvirt/images/new-machine.img \
    --name new-machine

Update ip-address and hostname.

$ sudo ./virt-config.py \
    -i 192.168.0.123 \
    -h new.example.com \
    new-machine

Start the VM.

$ sudo virsh start new-machine

Then, new-machine is available by using new ip-address!

You can confirm new configuration.

$ sudo ./virt-config.py -c new-machine
ipaddr: 192.168.0.123
hostname: new

Supported OSs as Guest

• Ubuntu
• CentOS