Armadillo book: http://www.amazon.com/dp/0596003439
The Frisch book is probably a great start for general concepts, though:
It's been ten or more years since I've read it, but it's been updated every few years, and is probably due for a new edition any day now actually. The concepts it covers (backups with standard UNIX tools, for example) are somewhat timeless. It's probably not required reading, though, if you don't actually want to be a system administrator.
Most books are just re-hashes of the documentation for a particular service, like Apache or Postfix or Sendmail or whatever, so I don't really have any strong opinions in that direction. When I had problems with Sendmail in the distant past, I found the O'Reilly book useful, but I've never needed third party docs for Postfix, which I've been using for the past eight years or so. Books about specific software are also often quickly dated by new versions of the software.
So, that's a long-winded way of saying, "Not really."
Get dozens of book recommendations delivered straight to your inbox every Thursday.