Nagios 2.x bug in pre-flight check with incomplete templates

[Thomas Guyot-Sionnest]

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Tested against 2.7 and latest CVS: When I define a template like this:

define servicedependency {
  dependent_hostgroup_name hsgrp_1,hsgrp_2,hsgrp_x
  name                     template_name
  register                 0
}

Nagios bails out with the following error:

Error: Could not expand master hostgroups and/or hosts specified in
service dependency (config file '/path/to/config', starting on line 88)

Looking quickly at the code it seems that it could affect many other
objects... I didn't have time to pinpoint the problem though. I can
possibly take a deeper look tonight if it's not obvious to anyone more
used to play with the template code.

As a workaround I can define a host_name and override it in the service
definition.

You may ask why I have a so simple template definition? The answer is
that I keep all hostgroup lists at the same place and grouped together,
so that when I add/remove hostgroups I don't need to grep around the
config to make sure I didn't miss something. (While we're at it, I'm
just thinking that the ability to get a hosts list out of a service
templates would be nice if it can be done in a sane way...)

- --
Thomas
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