Red Hat Enterprise Linux Installation Guide 5.2 - linux.meuhobby.com

Chapter 28. Kickstart Installations
or source media. This information must be included for each created ks.cfg file,
as the pre-installation script occurs during the second stage of the installation
process.
7. Post-installation Script
You have the option of adding commands to run on the system once the installation is
complete. This section must be at the end of the kickstart file and must start with the %post
command. This section is useful for functions such as installing additional software and
configuring an additional nameserver.
Note
If you configured the network with static IP information, including a nameserver,
you can access the network and resolve IP addresses in the %post section. If
you configured the network for DHCP, the /etc/resolv.conf file has not been
completed when the installation executes the %post section. You can access the
network, but you can not resolve IP addresses. Thus, if you are using DHCP, you
must specify IP addresses in the %post section.
Note
The post-install script is run in a chroot environment; therefore, performing tasks
such as copying scripts or RPMs from the installation media do not work.
--nochroot
Allows you to specify commands that you would like to run outside of the chroot
environment.
The following example copies the file /etc/resolv.conf to the file system that was just
installed.
%post --nochroot cp /etc/resolv.conf /mnt/sysimage/etc/resolv.conf
--interpreter /usr/bin/python
Allows you to specify a different scripting language, such as Python. Replace
/usr/bin/python with the scripting language of your choice.
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