Hi all, > * Michael Tautschnig <[email protected]> [Sat Apr 03, 2010 at 11:34:20AM +0200]: > > > >>>>> On Tue, 30 Mar 2010 21:52:27 +0100, Holger Levsen > > > >>>>> <[email protected]> said: > > > > > How? (Seriously, how would you do this?) > > > > I, myself will not use subclasses. > > > > > definitly be easily possible in FAI, thus either be part of the > > > > featureset or be documented well. > > > > Have a look at #498412, there's a sample implementation from Ingo, so > > > it's already documented. You may want to add this information to the > > > FAI wiki. > > > I'm using some kind of subclasses for a long time now and it was really > > easy to > > implement using a single script in class/ that evaluates an extra file > > class/$class if class/$class exists. > > > I'm not sure how feature-complete the FAI Guide intends to be, but maybe it > > could be as simple as to add references to this bug report and #468352 to > > Section 11 (Various Hints)? > > ACK. Adding this to the official documentation (maybe in a > summarized version so users don't have to digg through the whole > bugreport) would be worth the effort IMO. > > Could anyone with knowledge regarding this issue please volunteer to > come up with a few lines of documentation? >
I was initially considering to simply post my scripts and setup here, which I'll
do nevertheless. But if we really want a proper solution, Ingo's solution looks
really nice and pretty feature-complete. I'll therefore include that into the
experimental branch at least; I will, however, not add it to subroutines or the
like, but instead the user shall be calling fai-deps from within some script in
$FAI/class/ at will. It's finally included in 4.0~beta2+experimental8.
The very simple solution I'm using is as follows, and is part of my
$FAI/class/02more.sh:
base_class=`grep "^$HOSTNAME " $FAI/class/CLASSES | awk '{ print $2 }'`
for class in $classes $base_class ; do
[ "$class" = "$HOSTNAME" ] && continue
[ -f $FAI/class/$class ] && cat $FAI/class/$class
done
if [ "$base_class" = "$HOSTNAME" ] ; then
exit 0
fi
echo $base_class
and a $FAI/class/CLASSES file that has entries like these:
gnat DNS
bull bull
cola SHELL_SERVER
calf MAILRELAY
wasp XEN0
I guess such a snippet could easily be included in the documentation, but for
complex dependencies there is no way around Ingo's solution.
Best,
Michael
pgp8Ylz6jmN0I.pgp
Description: PGP signature
