Percona maintains Ubuntu repos for their products. Below is process to install it quickly.
Add GPG Key
wget http://www.webmin.com/jcameron-key.asc apt-key add jcameron-key.asc
echo "deb http://download.webmin.com/download/repository `lsb_release -cs` contrib" >> /etc/apt/sources.list.d/percona.list echo "deb http://webmin.mirror.somersettechsolutions.co.uk/repository `lsb_release -cs` contrib" >> /etc/apt/sources.list.d/percona.list
apt-get install webmin
By default, webmin starts on port 10000 with https. So you can open https://example.com/10000 in browser. Ignore any security warning that browser may give if example.com do not have a SSL certificate.
Login with your linux username and password only.
(Source: webmin official page)