Ubuntu Server 12.04 LTS finally provides a stable long term support server distro that has a recent version of Varnish in its repositories.
Trouble is, the repository provided package of Varnish has some issues. Specifically, the command line tools, such as varnishhist, varnishstat, ...etc. do not report anything. Therefore one cannot know the hit/miss rates, hits per second, or other useful information. Moreover, monitoring Varnish using Munin for such statistics does not work either.
There are two ways you can overcome this, both are described below.