Multiple IP's For Single Host

[Greg Vickers]

Hi Joseph,

Joseph Hardeman wrote:
> Hello,
> 
> I was wondering if there is a way to identify multiple addresses for a 
> single host?  I am running ver2.0b4.  I am wanting to check the internal 
> and external interfaces of some VPN routers and was wondering if this 
> could be done without creating a host entry for each interface.  If not, 
> then that is cool.  Just will have to update my scripts to create those 
> entries when outputting the cfg files.

What people usually do is define a host for each interface and make the 
interface closest to the Nagios host the parent of the interface 
furthest away from the Nagios host.

You can define multiple host addresses and write your host checks so 
that multiple addresses are catered for, e.g.:

define command{
	check_name	check-host-alive
	check_line	/path/to/check_icmp -H $HOSTADDRESS$
}

But by using this method you can run across problems differentiating 
between the interfaces - e.g. how do you tell which interface is 
offering SSH and which isn't?

> For example:
> 
> define host{
> 	host_name			bogus-router
> 	alias				Bogus Router #1
> 	address				192.168.0.253 <http://192.168.0.253/>,
> 192.168.1.254 <http://192.168.1.254/>
> 	parents				server-backbone
> 
> 	check_command			check-host-alive
> 	max_check_attempts		5
> 	process_perf_data		0
> 	retain_nonstatus_information	0
> 	contact_groups			router-admins
> 	notification_interval		30
> 
> 	notification_period		24x7
> 	notification_options		d,u,r
> 
> 	}

HTH,
-- 
Greg Vickers
Project Manager, IT Security
Information Technology Services
Queensland University of Technology
L12, 126 Margaret St, Brisbane

Phone: (07) 3864 9536
Mobile: 0410 434 734
Email: g.vickers at qut.edu.au
IT Security web site: http://www.its.qut.edu.au/itsecurity/

CRICOS No. 00213J


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