While I have been interested in getting a handle on Apache (the worlds most used webserver) for some time, when Oracle put it in the heart of their new internet Application Server software, I suddenly found that I really NEEDED to know about Apache and fast.
The book assumes little knowledge and indeed, gives a good, concise background into the web and Apache. It is organised in four main sections: Essential Configuration, Advanced Configuration, Maintenance and Appendix, making it easy to dip in and out of as needed.
The first section is a solid guide into downloading, installing and configuring the web server. This is highly detailed and a really good step by step guide which explains the configuration files and what they do.
The second builds up and guides you through things like Apache JServ and SSL configuration while the third section helps you keep the server running smoothly. This is all backed up by a solid Appendix section, detailing all the directives and their options.
As the title suggests, the book is Linux based, though I would think that most UNIX based systems administrators would find the guide useable.
If you are interested in this book from an Oracle iAS perspective, the differences between Apache and Oracle 9i Application Server seem to be that Oracle comes pre-configured with Apache JServer and SSL, plus some Oracle written modules (not in the book!). This is a good buy for an iAS administrator, like myself, since it explains much of the pre-configuration Oracle have already done for you and not documented well, if at all.
Apache Web Server Administration is a great guide to Apache server and for those Oracle people out there an excellent guide to understand and get started with iAS. It is worthy of a place on any web server administrators bookshelf!