Fwd: Multiple host in hosts.cfg

[spdesai at gnvfc.net]

Hello 

thanks for your reply, let me clear that i have posted this messge today only 
once,

now get back to the point,

I have found that we can add multiple host in hosts.cfg from below nagios FAQ,

http://www.nagios.org/faqs/viewfaq.php?faq_id=146&expand=false&showdesc=false

Title: Can I specify multiple addresses for a host? 
FAQ ID: F0146 
Submitted By: Ethan Galstad  
Last Updated: 02/25/2003 

 
Description: User would like to specify multiple addresses for a single host 
in their configuration file. This is often useful for devices that have 
multiple interfaces (routers, multi-homed hosts, etc.). 

  

 
Solution: Yes, you can define multiple address for a host. In fact, you can 
add anything you want for a host address. You can specify an IP address, MAC 
address, GPS coordinates, etc. Nagios does not directly interpret a host's 
address (or addresses), so you can do pretty much anything you want. Nagios 
simply passes this address to plugins and external commands via the 
$HOSTADDRESS$ macro. You'll have to make sure that you host check command (and 
possibly service checks, etc.) can understand the format of your host's 
address in order to check it though. 

If you want to specify multiple IP addresses for a host, you might use 
something like this in the address directive of the host definition: 
192.168.1.1,192.168.1.2 

Nagios is designed to treat hosts (as well as services) in an abstract manner. 
Here's one valid example of a "host" you could monitor... Let's say you have a 
cat named Nightmare. Nightmare wears an RFID tag on his collar (claw attacks 
in the middle of the night have left you emotionally scarred and you want to 
track him). The asset number stored in that RFID tag is what we'll use as 
cat's "address". How do we check the status of the host (i.e. is the rascal 
still moving)? Hmmm... Well, we could create a host check command that sent 
out a radio-controlled Lego Mindstorm with an RFID locater that either a) 
prodded the cat or b) dangled some catnip in the air when it was in close 
proximity to the little devil. If the cat meowed, pounced, or just moved we 
could safely say the cat was still in good shape. And you thought you could 
only monitor network devices... 

 



Quoting Giles Coochey <GilesC at CarmenMedia.com>:

> Firstly, and I've seen this a couple of times in the last few days with
> different users - simply re-posting the same question just a few hours
> after the original post isn't likely to get you results. And it is
> generally considered bad netiquette.
> 
> I seldom complain, but having had this feeling of deja-vu the second
> time round in the last few days I thought I'd mention it. My guess is
> that many people on the mailing list increasingly ignore people who
> double post questions when they don't get a reply.
> 
>  
> > 
> > Hello,
> > 
> > can i have multiple host(for exa: 192.168.10.0/24 or 192.168.10.1-
> > 192.168.10.255) in address field in hosts.cfg file ?
> > 
> > my hosts.cfg file is as per below
> > 
> > define host{
> >         use                     generic-host            ; 
> > Name of host 
> > template to use
> > 
> >         host_name               LAN
> >         contact_groups          GNFC-Admin
> >         alias                   Workstation
> >         address                 
> > 192.168.10.63,192.168.10.71,192.168.10.92
> >         check_command           check-host-alive
> >         max_check_attempts      10
> >         notification_interval   120
> >         notification_period     24x7
> >         notification_options    d,u,r
> >         }
> > 
> > but it giving error like "1163068098] SERVICE ALERT: 
> > LAN;SMTP;UNKNOWN;HARD;1;check_smtp: Invalid hostname/address 
> > - 192.168.10.63,192.168.10.71,192.168.10.92"
> > 
> 
> "Invalid hostname/address" is the clue here... Oh and look, it
> references your comma separated address entry... Surely that means...
> 
> Seems to me that Nagios is giving you a straight answer to your
> question. The syntax is not correct, you must have a single IP address
> defined for a host. A host is a container for a single host (I believe
> there are plugins available to define a second IP for the same host, but
> that isn't what you are looking for).
> 
> > or is their any facility in nagios to auto-detect new 
> > inserted devices ?
> > 
> 
> Not built in, but www.nagiosexchange.org is your friend.
> 
> I came across this after thirty seconds of searching (considerably
> shorter than it took me to write this reply):
> 
> http://www.nagiosexchange.org/Configuration.20.0.html?&tx_netnagext_pi1[
> p_view]=277
> 
> It might be what you're looking for.
> 
> 
> ______________________________________________________________________
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> ______________________________________________________________________
> 




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