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]> 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 ... > > -- > 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 >
