Some useful features you were expecting to run out of the box have to adjusted manually on a RedHat 8.0 full installation.

RedHat Beasts :-|

The following various and partial serious RedHat8.0 bugs have been found on many hours of personal experience with more than five RedHat8.0 servers while I was getting identical feedback from suffering comrades and many articles from cyber neighbours, last but not least the bugzilla website.

I took notice nobody I met seems to have these troubles with an upgraded 7.3 to 8.0 version but always with a full installation from scratch.

You might recognize there are not really exotic problems at all and were expecting to run properly from start. Some fixes might not represent an optimal approach but were determined as the best instant solution. If you had better ways to solve a certain situation, please let me know.

1. [8.0] - PHP & RedHat 8.0
   PHP will not work even if you install the latest rpm. You had to post configure some settings manually. MySQL connects won't work at all: Call to undefined function: mysql_connect() - you had to re-configure and re-compile PHP to include or post install some RPM's which you won't find at rpmfind.net
   
   
2. [8.0] - Connection to MySQL database by domain name doesn't work
   Solution: Start mysqld with --skip-name-resolve option
   
   
3. [8.0] - rpm database may easily become corrupted and even rpm --rebuilddb can't fix it
   See also: http://rhn.redhat.com/help/faq/technical_questions.pxt#227
   
   
4. [8.0] - X server may load the cpu up to 100 % suddenly while starting certain X applications or screen savers.
   Solution: Use top to get the X session's id and kill the X session. Don't let an X server session be unattended if somebody has to work remotely.
   
   
5. [8.0] - httpd and mod_ssl aren't configured properly. If you like to run a https server you have to reconfigure ssl.conf and httpd.conf.
   
   
6. [8.0] - Wrong key mapping gives the SysAdmin hard times to read man pages or while trying to enter special characters at the vi editor.
   Solution: vi /etc/sysconfig/i18n
   

   LANG="en_US"
   SUPPORTED="en_US:en"
   SYSFONT="lat0-sun16"
   SYSFONTACM="iso01"

   
   
   
7. [8.0] - glibc is often too new to compile current tools.
   Solution: Downgrade! RedHat's recommendation ;-)
   
   
8. [8.0] - sendmail upgrade (latest rpm)
   "permission denied" while trying send e-mail by using CGI. Changing the permission of the spool directory didn't help. Had to download and install sendmail from sendmail.org that worked out of the box perfectly.
   
   
9. [8.0] - GTK (Graphical Library) is not being installed properly
   Package gtk+-2.0 was not found in the pkg-config search path.
   This prevents out-of-the-box compiling and installing new software that uses GTK.