I missed your first email, but we do this in our installs.
The el7 anaconda uses tmux underneath, which can be exploited to display whatever you want or even interact with a user. The first thing we do, is change the provided rsyslog.conf to log to our central server, which serves most of our needs. something like the following in a %pre script will get you most of the logs from the installer: # wget https://your.server/rsyslog.conf -O /etc/rsyslog.conf # systemctl restart rsyslog This can be further used to display logs using some tmux commands. e.g: # tmux new-window -a -n logging 'tail -F /path/to/log/file.log' We take this a step further, and use tmux to run our %pre and %post scripts directly. # tmux new-window -a -n prescript 'python /tmp/pre.py' # while [ ! -f /tmp/predone ] # do # sleep 1 # done # tmux kill-window -t prescript This sort of setup can also be used with xloadimage to launch a non-blocking script to paste an image to the screen while the text mode installer is running. I hope this helps. Ross Smith <r...@umich.edu> College of Engineering - CAEN - Linux Support On Wed, Mar 2, 2016 at 4:45 AM, therbur <fxb7-o...@dea.spamcon.org> wrote: > Since nobody responded, I spent days looking around on this and > experimenting. > > It makes no sense to me that the ability to both log and display > output is not intrinsic to kickstart. > > Note that the %pre --log parameter does not work, it always > results in a 0-length log file. > > Also, the example of that option in: > > > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-kickstart-syntax.html#sect-kickstart-preinstall > > is completely wrong anyway because it's logging %pre output to > the non-existent built image. > > > Summary of the solution that works for me for CentOS 7 kickstart: > > > %pre --erroronfail > > exec < /dev/tty3 > /dev/tty3 > chvt 3 > > ( > > echo ... > > ) 2>&1 | /usr/bin/tee /tmp/pre.log > > %end > > > > %post --nochroot --erroronfail > > cp /tmp/pre.log /mnt/sysimage/root/ > > %end > > > > %post --erroronfail > > exec < /dev/tty3 > /dev/tty3 > chvt 3 > > ( > > echo ... > > ) 2>&1 | /usr/bin/tee /root/ks-post.log > > > > therbur <fxb7-o...@dea.spamcon.org> wrote: > > >The following method has worked for years with CentOS 5, to allow > >live viewing of %post output and also logging it. It doesn't > >work in CentOS 7. What is the recommended method now? > > > ># from kickstart text mode install > > > >%post --erroronfail > > > >chvt 3 > >exec < /dev/tty3 > /dev/tty3 2> /dev/tty3 > > > >tail -F /root/ks-post.log & > >( > > > >echo "Starting post-kickstart ..." > > > ># ... various commands > > > >echo "Done." > >echo > >echo "Do Alt-F1 and press Enter to reboot" > > > >) >> /root/ks-post.log 2>&1 > > > >%end > > > _______________________________________________ > Kickstart-list mailing list > Kickstart-list@redhat.com > https://www.redhat.com/mailman/listinfo/kickstart-list >
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