Possible bug or update for Core documentation

[Robert Marxreiter]

Hello Libor,

when you define a host template, you have to tell Nagios not to register 
the host entry (register 0). Otherwise it will assume 
"server-host-template" is a real host and complain about missing 
parameters. See comment:

define host {
	name		server-host-template
	check_interval	1
	register	0	; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST 
A TEMPLATE!
}

Regards
- Robert

On 02/01/2011 12:27 PM, Libor Jelinek wrote:
> Hello dear Nagios developers,
> I am verry sorry if this is not right place to file a bug but I didn't
> found any your bugzilla or something like this.
>
> During configuring my Nagios I observed possible bug OR at least need
> of updating manual page
> http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html.
>
> ERROR:
> During start, restart or nagios -v sequence following error messages:
> Error: Invalid max_check_attempts value for host 'vlm-srv-ad'
> Error: Could not register host (config file
> '/etc/nagios3/conf.d/ae/o-servers.cfg', starting on line 39)
>    Error processing object config files!
>
> CAUSE:
> Missing max_check_attempts for host object if check_interval for host
> object is used.
>
> I think that this behavior is bug or is not docummented that you also
> have to set max_check_attempts.
>
> HOW TO REPRODUCE:
> 1) I created new .cnf file for my servers named servers.cnf
> 2) Define new hostgroup:
> define hostgroup {
>      hostgroup_name     servers
>      alias      My server
> }
> 3) Define a new host "template" (a parent for object definition
> inheritance) and decrease check_interval from default 5 to 1 minute
> (default from /etc/nagios3/conf.d/generic-host_nagios2.cfg)
> define host {
>      name      server-host-template
>      check_interval     1
> }
> 4) Define host for my first server:
> define host {
>     use server-host-template
>     host_name    MyFirstServer
>     address   10.0.0.1
>     hostgroups    servers
> }
> 5) Now $ nagios3 -v /etc/nagios3/nagios.cfg will produce errors from above.
> 6) Not documented is that I have to set also max_check_attempts. So
> template will looke like:
> define host {
>      name      server-host-template
>      check_interval     1
>      max_check_attempts     5
> }
>
> ENVIRONMENT:
> Ubuntu 10.04 32bit (Lucid)
> Nagios3 (Version 3.2.0, August 12, 2009) from Ubuntu Lucid deb package
>
> --
> Hezky den / Have a nice day
> Libor JELÍNEK
>
> VIRTAGE SOFTWARE // software - design - web
> Lucni 542 // 285 04 Uhlirske Janovice // Czech Republic
> support: +420 315 555 488 // cell: +420 777 205 142
> email/jabber: ljelinek at virtage.com // web: www.virtage.com
>
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Finally, a world-class log management solution at an even better price-free!
Download using promo code Free_Logger_4_Dev2Dev. Offer expires 
February 28th, so secure your free ArcSight Logger TODAY! 
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