Oh, I didn't see this ... same idea. I hope I get it in with the
argumentation that the change has a very small footprint ... only one line
in an existing file is changed.
Ingo
Raphaël Pinson schrieb:
Hi Ingo,
Nice work.
I had sent a patch to FAI some months ago which allowed inherited
classes, but it never got taken into FAI, don't remember why [0].
Raphael
[0] https://lists.uni-koeln.de/pipermail/linux-fai-devel/2008q1/000516.html
On Tue, Sep 9, 2008 at 10:31 PM, Ingo Wichmann <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Hi fai,
I just wrote a script that implements dependencies between fai
classes and ask for including it in fai.
how does it work?
put this script in $FAI/class and make it executable. Now,
e.g. you have a class WORDPRESS that depends on the classes VHOST
and POSTGRES . VHOST again may depend on WEBSERVER.
So if you want to install the blogging software wordpress, you add a
file
$FAI/class/WORDPRESS.deps
that contains the words
VHOST
POSTGRES
and a file
$FAI/class/VHOST.deps
that contains the word
WEBSERVER
The order often is important, so this script is taking care of it.
The order of the example above would be:
WEBSERVER VHOST POSTGRES WORDPRESS
That way, in $FAI/scripts/ first the webserver would be configured,
then the vhosts, ...
It removes double entries from FAI_CLASSES and handles circular
dependencies[1].
Calling this file from withing defclass is not perfect: dependencies
for $HOSTNAME and LAST are not possible. A solution could be, to
call this script right after fai-class is called in task defclass.
Somebody willing to include this? To do so 3 changes are necessary:
1. add a line
fai-deps
right after
fai-class -T $FAI/class $LOGDIR/FAI_CLASSES
in
/usr/lib/fai/subroutines ( task_defclass() )
2. add this script as
/usr/bin/fai-class
3. new dependency to libgraph-perl for fai-class
It should not break existing configurations, because it only acts if
non-executable files $FAI/class/*.deps exist.
Ingo
[1] I do not recommend using circular dependencies, but if you
accidentally define them, they will not break your neck. But you'll
get a warning ...
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--
Linuxhotel GmbH, Geschäftsführer Dipl.-Ing. Ingo Wichmann
HRB 20463 Amtsgericht Essen, UStID DE 814 943 641
Antonienallee 1, 45279 Essen, Tel.: 0201 8536-600, http://www.linuxhotel.de
