Could not expand hostgroups error

[Chris Weiss]

I've got a Nagios 3.2 setup on FC10 monitoring ~32 or so hosts for a
few dozen services and am having troubles trying to add a couple of
hostgroups.

The way I have things organized is /etc/nagios/conf.d/ contains
individual files for each host and /etc/nagios/objects contains
hostgroup definitions used to define common services to be monitored.
I've got all the objects/*.cfg files included in nagios.cfg:
cfg_file=/etc/nagios/objects/commands.cfg
cfg_file=/etc/nagios/objects/contacts.cfg
cfg_file=/etc/nagios/objects/timeperiods.cfg
cfg_file=/etc/nagios/objects/templates.cfg
cfg_file=/etc/nagios/objects/localhost.cfg
cfg_file=/etc/nagios/objects/windows.cfg
cfg_file=/etc/nagios/objects/linux.cfg
cfg_file=/etc/nagios/objects/switch.cfg
cfg_file=/etc/nagios/objects/printer.cfg
cfg_file=/etc/nagios/objects/router.cfg
#cfg_file=/etc/nagios/objects/winhttp.cfg
#cfg_file=/etc/nagios/objects/twiki.cfg
#cfg_file=/etc/nagios/objects/bugzilla.cfg
cfg_file=/etc/nagios/objects/mysql.cfg
cfg_file=/etc/nagios/objects/exchange.cfg

Sample host definition:
#/etc/nagios/conf.d/mailsrv.cfg
define host{
        use             windows-server  ; Inherit default values from a template
        host_name       mailsrv          ; The name we're giving to this host
        alias           mailsrv.domain.com      ; A longer name
associated with the host
        hostgroups      windows-servers,exchange-servers
        address         10.239.1.16     ; IP address of the host
        parents         cisco-3560g
        }

Sample hostgroup definition:
#/etc/nagios/objects/exchange.cfg
define hostgroup{
        hostgroup_name  exchange-servers
        alias           Exchange Servers
        }

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     Exchange Information Store
        check_command           check_nt!SERVICESTATE!-d SHOWALL -l MSExchangeIS
        }

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     Exchange Management
        check_command           check_nt!SERVICESTATE!-d SHOWALL -l
MSExchangeMGMT
        }

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     Exchange MTA Stacks
        check_command           check_nt!SERVICESTATE!-d SHOWALL -l
MSExchangeMTA
        }

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     Exchange Routing Engine
        check_command           check_nt!SERVICESTATE!-d SHOWALL -l RESvc
        }

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     Exchange System Attendant
        check_command           check_nt!SERVICESTATE!-d SHOWALL -l MSExchangeSA
        }

define service{
        use                     generic-service
        hostgroup_name          exchange-servers
        service_description     IIS Admin Service
        check_command           check_nt!SERVICESTATE!-d SHOWALL -l IISADMIN
        }


This seems to work fine.

However, I have three hostgroup files that do not work and I can't
suss out why. They're all fairly identical, single-service hostgroups,
two are checking a URL (bugzilla & twiki) and one is a Win32 service
check.

Sample 'broken' hostgroup config:
#/etc/nagios/objects/twiki.cfg
define hostgroup{
        hostgroup_name  twiki-servers
        alias           TWiki Servers
        }

define service{
        use                             generic-service
        hostgroup_name                  twiki-servers
        service_description             TWiki
        check_command
check_http!$HOSTADDRESS$!twiki/bin/view/Software
        }

When I run nagios -v with cfg_file=/etc/nagios/objects/twiki.cfg
present, it complains:
Error: Could not expand hostgroups and/or hosts specified in service
(config file '/etc/nagios/objects/twiki.cfg', starting on line 24)
   Error processing object config files!

I'm stumped as to why it cannot expand the hostname. It's defined in
the same file and nowhere else. The only other place "twiki-servers"
is referenced is in one of the other host files in conf.d:
Sample host config (actually works regardless of whether broken
hostgroups are included)
#/etc/nagios/conf.d/hudson.cfg
define host{
        use                     linux-server            ; Name of host
template to use
        host_name               hudson
        alias                   hudson
        hostgroups
linux-servers,mysql-servers,twiki-servers,bugzilla-servers
        address                 hudson.sw.domain.com
        parents                 t1-router, cisco-3560g
        }


If I comment out that include in nagios.cfg, things run just fine. The
hostgroup_name definition does not appear anywhere else except that
file. I would think that the exchange.cfg file would fail as well,
since they're implemented identically. The same thing happens with the
other 2 definitions, bugzilla.cfg and winhttp.cfg. They're very
similar and use the exchange.cfg template.

Am I missing something? This all *looks* like it should work.

-- 
-Chris

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