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DHCP Debugging and Handy TCPdump filters

Recently at $WORK we’ve been having some strange issues with a particular Xen VM not getting DHCP. Traditional (tail -f dhcpd.log) debugging hasn’t turned up much, other than the server is getting the DISCOVER but not sending out an OFFER. I’ve turned to packet captures to ...

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Apache catchall vhost

As mentioned in one of my recent posts, I occasionally have to setup catchall pages in Apache. The general idea is usually that I either want a vhost that serves one page for any conceivable request, or that I moved something and want to alert the visitor, but provide a ...

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Happy April Fool’s Day

It’s April 1st, also known as April Fool’s Day. While I, unfortunately, haven’t planned any pranks or jokes myself this year (I guess I’ve just been too busy), I always try to find as many of Google‘s jokes as possible. Despite being a behemoth ...

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Syslog from KickStart / Anaconda

Yesterday I was installing a new machine at $WORK, and we’d been having some spotty problems with Anaconda not being able to find RPMs in a specific repository. As a result, I was standing in the machine room at a cart-mounted console, watching the output of the installation. Just ...

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