I have just returned home after spending the night in the cold and noisy machine room at AMCOM. In order to stay relevant we needed to upgrade prime (our development server) to the latest version of Ubuntu, 7.04 "feisty fawn".

A previous upgrade attempt three weeks ago had left us without a working Trac installation. This upgrade was rolled-back and I set about searching for the answers to my problem. The issue was a mismatch with the python-clearsilver package that meant moving from dapper to edgy broke the trac package. To get around this I removed the python-clearsilver package (as well as python2.4-clearsilver) via apt-get and reinstalled if after the dist-upgrade. This got us to a fully-upgraded edgy.

We had a few non-upgraded python packages, but using aptitude instead of apt-get forced them to upgrade too and I was all smiles.

To maintain monitoring I had to adjust the way that the SNMP server works - it was blocking access outside of 127.0.0.1 and had also changed the rocommunity string. I fixed this up and Cacti is back to graphing prime's intimate details.

As prime is a development server there was no interruption to client services.

Update: the upgrade from edgy to feisty broke trac... again, but thankfully I found the answers to these problems too.