[CentOS] continuing issues with %post

Craig White craigwhite at azapple.com
Thu Oct 15 03:27:23 UTC 2009


On Wed, 2009-10-14 at 22:17 -0400, David Mehler wrote:
> Hello,
> I'm trying to do an unattended CentOS 5.3 install. For the most part
> it's working. As of right now i'm statically assigning the machine an
> IP which i believe will allow %post to resolve names? I also like
> knowing where the box will show up.
> 	I am however having a few issues and I'm probably thinking to
> complicated on them. My first one is the fact that updates aren't
> working from %post. Under the assumption name resolution is working,
> see above with the static configuration, the issue is then most likely
> importing of gpg keys. I've got these lines in %post:
> 
> # GPG keys
> echo "Importing GPG keys ..."
> rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*
> /usr/bin/yum -y update
> 
> When they're uncommented the box hangs, i'd love to see output.
----
I would expect to see that in the error out console <Control><Alt><F4>
(I think...maybe F3, or F5, I always forget). Generally, I will log
everything that happens anyway so I would add to each of the 'custom
lines something like '>> post-install.log 2&>1' instead
----
> 	My second issue is a cosmetic one. I want to set a standard prompt in
> /etc/bashrc. Out of the box the bashrc PS1 lines:
> 
> if [ "$PS1" ]; then
> [ "$PS1" = "\\s-\\v\\\$ " ] && PS1="[\u@\h \W]\\$ "
> 
> 	I have to make changes to that second line so a sed substitution
> would probably be my best bet. I'm not sure how to grab the part i
> need and change it. Manually i change that line to:
> 
> PS1='\u@\h:\w\$'
----
I find it's easier to just replace the whole file for this though you
couuld use sed, I would probably just grab a copy of bashrc from an
available web server and wget it it into place.
----
> I'd like to get %post to do that for me.
> 	Next, i'd like to alter /boot/grub/grub.conf. I want to set it up for
> serial terminal support, so i have to add a serial and terminal lines
> at the top of the file say after any comment blocks that might or
> might not be there plus add console=tty0 and/or console=ttyS0,9600n8
> to the append lines to however many kernels are there. Again, i'm
> assuming sed but i'm not sure how to get the parts i need and edit.
> 	I want to do other things, mostly with security, increasing password
> complexity requirements and pam, but that should be easy once i figure
> out how to alter the right sections in files. Any help appreciated.
----
sounds like you're too lazy to try sed to actually give us anything
useful in terms of why it's not working. Google has millions of sed
examples.

Craig


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