Here's a dump of blogs I follow that have lots of devops-oriented contents.

http://www.kartar.net/

http://www.kitchensoap.com/

http://www.masterzen.fr/

http://blog.nistu.de/

http://www.jedi.be/blog/

http://www.krisbuytaert.be/blog/

http://www.unixdaemon.net/

http://www.rottenbytes.info/

http://blog.lusis.org/

http://bitfieldconsulting.com/

http://agilesysadmin.net/