Re: defining large groups by domain name

[rader]

Ummm... using a module to define a classes in group: isn't working
for me...

 $ hostname
 ginseng
 $ cat /var/cfengine/modules/HostMatch
 #!/usr/bin/perl  
 if ( `hostname` =~ /$ARGV[0]/ ) { print "+$ARGV[1]\n"; }
 $ /var/cfengine/modules/HostMatch ginseng g3_node
 +g3_node
 $ cat cftest2
 #!/usr/sbin/cfagent --no-splay --inform --no-lock --file
 control: 
   moduledirectory = ( /var/cfengine/modules )
   actionsequence = ( shellcommands )
   AddInstallables = ( specialclass )
 groups:
   g3_node_bugus = ( PrepModule(HostMatch, "ginseng g3_node") )
 shellcommands:
   g3_node:: "/bin/echo g3_node is defined"
 $ ./cftest2
 $ 

?

I put some debug stmts in to try to figure this out, but I've
forgotten exactly what the problem is.  My recollection is that
there's something special about group: actions.

And, besides, they sytax above is ugly and I've already written
the code for

 groups:
   g3_compute_nodes =   ( HostRange(g3,01-35) )

steve 
- - - 
systems & network guy
high energy physics
university of wisconsin

 > ---- Original Message ----
 > From: Brendan Strejcek
 > rader@ginseng.hep.wisc.edu wrote:
 > 
 > > I tried writing a module but debug output makes me think that modules
 > > can only define macros--not groups.
 > 
 > Modules can define classes or macros. Here is a simple sh module that
 > accomplishes what you want:
 > 
 > #!/bin/sh
 > 
 > hostname | cut -f1 -d. | egrep '^g3n([0-2][0-9]|3[012345])$' &&
 >     echo +g3_compute_nodes
 > 
 > For more details, read this:
 > 
 > http://www.cfengine.org/docs/cfengine-Tutorial.html#Writing%20plugin%20mod
 > ules
 > 
 > -- Brendan