Segfault during pre-flight check

[Ethan Galstad]

Thomas, et al -

I think I've found and fixed this bug.  I just posted a proposed fix to 
CVS a few moments ago.  A new CVS snapshot should be available in about 
10 minutes from the following URL:

http://nagios.sourceforge.net/download/cvs/

When you get a chance, can you grab the latest nagios-2-x-cvs tarball, 
compile it, and see if it fixes the segfault?  Thanks!

Thomas Guyot-Sionnest wrote:
> Hi,
> 
> I'm maintaining a pretty big nagios setup (about 60 hosts/ 600 services and
> plan to grow that by 3-4 times). Most of the config is using templates to
> save config lines and maintenance time. Every host has an extinfo (one
> definition for each hostsgroup).
> 
> Now I started adding services extinfos to do some fancy things with e-mail
> pages, and ran in a strange segfault bug. To explain it better I'll give an
> overview of my config.
> 
> templates.cfg: This defines all basic hosts, services and service extinfo
> templates.
> 
> Ex:
> 
> define service {
>   name                  generic_service
>   max_check_attempts    3
>   normal_check_interval 300
>   retry_check_interval  60
>   check_period          24x7
>   notification_interval 600
>   notification_period   24x7
>   notification_options  c,w,r
>   contact_groups        admin
>   register              0
> }
> 
> define service {
>   hostgroup_name admin,license,public,web
>   use            generic_service
>   name           dynamic_service
>   register 0
> }
> 
> services.cfg: This defines services based on template above.
> 
> For ex.:
> 
> define service {
>   host_name           nagios.example.com
>   service_description HTTP
>   servicegroups       http_svc
>   check_command       check_http!$HOSTADDRESS$
>   use                 dynamic_service
> }
> 
> Will add this services for all hosts in hostsgroups admin,license,public,web 
> PLUS host nagios.example.com
> 
> So far this works fine. Now I add in templates.cfg (Note that I removed the
> ampersand from "illegal_macro_output_chars" for this to work) :
> 
> define serviceextinfo {
>   name                generic_service_ext
>   action_url
> https://nagios.example.com/cgi-bin/extinfo.cgi?type=2&host=$HOSTNAME$&servic
> e=$SERVICEDESC$
>   register            0
> }
> 
> define serviceextinfo {
>   hostgroup_name admin,license,public,web
>   use            generic_service_ext
>   name           dynamic_service_ext
>   register 0
> }
> 
> And in services.cfg:
> 
> define serviceextinfo {
>   host_name           nagios.example.com
>   service_description HTTP
>   use                 dynamic_service_ext
> }
> 
> Then run:
> 
> # nagios -v /etc/nagios/nagios.cfg
> 
> Nagios 2.4
> Copyright (c) 1999-2006 Ethan Galstad (http://www.nagios.org)
> Last Modified: 05-31-2006
> License: GPL
> 
> Reading configuration data...
> 
> Segmentation fault
> 
> 
> Now, interesting thing here, If I move "hostgroup_name
> admin,license,public,web" from the template to the registered service
> extinfo, it works!
> 
> templates.cfg:
> 
> define serviceextinfo {
>   use            generic_service_ext
>   name           dynamic_service_ext
>   register 0
> }
> 
> services.cfg:
> 
> define serviceextinfo {
>   host_name           nagios.example.com
>   hostgroup_name      admin,license,public,web
>   service_description HTTP
>   use                 dynamic_service_ext
> }
> 
> 
> root at josianne:/etc/nagios/cfg# nagios -v /etc/nagios/nagios.cfg
> 
> Nagios 2.4
> Copyright (c) 1999-2006 Ethan Galstad (http://www.nagios.org)
> Last Modified: 05-31-2006
> License: GPL
> 
> Reading configuration data...
> 
> Running pre-flight check on configuration data...
> 
> Checking services...
>         Checked 597 services.
> Checking hosts...
>         Checked 64 hosts.
> Checking host groups...
>         Checked 10 host groups.
> Checking service groups...
>         Checked 4 service groups.
> Checking contacts...
>         Checked 7 contacts.
> Checking contact groups...
>         Checked 4 contact groups.
> Checking service escalations...
>         Checked 0 service escalations.
> Checking service dependencies...
>         Checked 71 service dependencies.
> Checking host escalations...
>         Checked 0 host escalations.
> Checking host dependencies...
>         Checked 0 host dependencies.
> Checking commands...
>         Checked 59 commands.
> Checking time periods...
>         Checked 4 time periods.
> Checking extended host info definitions...
>         Checked 64 extended host info definitions.
> Checking extended service info definitions...
>         Checked 132 extended service info definitions.
> Checking for circular paths between hosts...
> Checking for circular host and service dependencies...
> Checking global event handlers...
> Checking obsessive compulsive processor commands...
> Checking misc settings...
> 
> Total Warnings: 0
> Total Errors:   0
> 
> Things look okay - No serious problems were detected during the pre-flight
> check
> 
> 
> I'm sorry I didn't have time to cleanup all the config . I'm currently
> setting another nagios box, so if I run into this problem at the very
> beginning I'll keep that config and send it over. I also tried to get a core
> dump but it didn't worked, I'm not sure if I need to enable some options at
> compile time...
> 
> Thanks
> 
> Thomas
> 



Ethan Galstad,
Nagios Developer
---
Email: nagios at nagios.org
Website: http://www.nagios.org

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