SNMP Monitoring conundrum

[Mark Gius]

I would suggest you use custom object variables 
(http://nagios.sourceforge.net/docs/3_0/customobjectvars.html).  This is 
a nagios 3 feature, so if you're on 2.0 you'll need to upgrade.

Basically, you can define custom variables into 
hosts/services/whatever.  So you'd have a custom object var in the host
define host {
    name   UPS-thing
    _OIDS <List of OIDs Here> <-- This being the custom variable that 
you define.
}

and in your service you'll have

define service {
     name    snmp-check
     check_command check_snmp!$_HOSTOIDS$  <-- Use it like so
}

-Gius

Israel Brewster wrote:
> I have a number of scripts I have developed to monitor our UPS units 
> via SNMP - I found the included plugins didn't give me enough 
> power/flexibility with the monitoring, so I made my own. 
> Unfortunately, we have just added a new UPS to the system which, 
> although made by the same company, uses different OID's for the data I 
> am pulling. Thus the issue: I want the same data, so other than the 
> OID's the existing scripts would work. But how do I deal with 
> different OID's on different devices?
>
> So far I've thought of the following:
> 1) Make a second copy of my scripts with the new OID's. Also implies 
> creating new contacts to use the new script (the notification script 
> pulls data such as estimated run time via snmp) and maintaining two 
> copies of each check/notification script
>
> 2) Somehow pass the OID's to the scripts from nagios. Not quite sure 
> how I would manage this, as the OID's would need to be associated with 
> the hosts, and further complicated by the fact that some scripts use 3 
> or more OID's - for example, the main script looks at UPS state(On 
> battery, on line power, etc) estimated run time (if on battery) and 
> time on battery - so it would need to be passed three separate OIDS. 
> Perhaps this approach could be simplified by simply passing a code 
> identifying which set of OID's the script should use, at the expense 
> of a more complicated script. Still need to find some way of getting 
> that into Nagios so it can pass the appropriate value to the script 
> though.
>
> Anyone else run into a similar situation? What does everyone else 
> think the best approach here is? Thanks.
>
> -----------------------------------------------
> Israel Brewster
> Computer Support Technician II
> Frontier Flying Service Inc.
> 5245 Airport Industrial Rd
> Fairbanks, AK 99709
> (907) 450-7250 x293
> -----------------------------------------------

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