Chapter 10. Package and Driver Changes
10.1. System Configuration Tools Changes
named.conffile is recommended in Red Hat Enterprise Linux 6. Comprehensive BIND documentation is installed as part of the bind package in
/usr/share/doc/bind-x.y.z. Also, sample configurations can be found in the
/usr/share/doc/bind-x.y.z/sampledirectory. The system-config-bind tool from previous versions does, however, generate standard BIND configuration, so depending on your environment it is possible to migrate to the version of BIND found in Red Hat Enterprise Linux 6 by moving old configuration files to the correct location and performing sufficient testing.
grub.conffile, located in the
/boot/grubdirectory. Red Hat Enterprise Linux 6 uses version 1 of GRUB, also known as GRUB legacy. Full documentation for configuring GRUB can be found at the GRUB homepage: http://www.gnu.org/software/grub/.
xorg.conf) in the default X server installation as display management is now done dynamically using one of the following menu options:
xrandr) can be also used for display configuration. See the
xrandr --helpcommand or the manual page using the
man xrandrcommand for further details.
/etc/httpddirectory. The main configuration file is located at
/etc/httpd/conf/httpd.conf. This file is well documented with detailed comments in the file for most server configurations; however if required, the complete Apache web server documentation is shipped in the httpd-manual package.
"Hide system users and groups"option in the Preferences dialog. The root user will now be shown in the main listing, and the password can be modified like any other user.
10.1.14. Preupgrade Assistant
preupg) checks for potential problems you might encounter with an upgrade from Red Hat Enterprise Linux 6 to Red Hat Enterprise Linux 7 before making any changes to your system. This helps you assess your chances of successfully upgrading to Red Hat Enterprise Linux 7 before the actual upgrade process begins.
- System analysis report with proposed solutions for any detected migration issues.
- Data that could be used for "cloning" the system, if the in-place upgrade is not suitable.
- Post-upgrade scripts to finish more complex issues after the in-place upgrade.
10.1.15. Red Hat Upgrade Tool
- Red Hat Upgrade Tool fetches packages and an upgrade image from a disk or server, prepares the system for the upgrade, and reboots the system.
- The rebooted system detects that upgrade packages are available and uses systemd and yum to upgrade packages on the system.
- Red Hat Upgrade Tool cleans up after the upgrade and reboots the system into the upgraded operating system.