Defining services at runtime

[Bruce Campbell]

On Wed, 10 May 2006, Sam Stickland wrote:

> Is there anyway in Nagios to define services at runtime? I'll give an
> example:
> 
> You have a script that monitors ports on a switch for errors. When its run
> it walks the interface error counters on the switch. For each port it
> discovers it creates a new service entry (for this host/switch) - if one
> does not already exist - and then sets the state accordingly.

The example works better if you continually have devices becoming 
available (eg, via zero-conf), being on for a while, then disconnecting, 
for example in a device testing environment.

Telling a running Nagios about a new service check doesn't seem possible. 
The closest that I've gotten is to automagically regenerate the nagios 
configuration files based on templates at conditional intervals; ie, a 
machine being added to the database and Nagios starts monitoring it in the 
next 10 minutes thanks to the generate script noticing a database change.

> check ran (instead of one service check per-port). I can envisage a single
> plug-in, which only needs to be given a hostname and community string to
> able to generate individual reports for each switchport for errors,
> queuedrops and port status.

Sounds like what you want (after generating the configuration) is a single 
active service check which, when run by nagios, supplies passive check 
results for a lot of other service checks (thus inhibiting the Nagios 
execution of those specific checks).

> ------=_NextPart_000_0010_01C67413.EEDA4380
> Content-Type: text/html;

A single part of text/plain works much better for technical mailing lists. 
You don't end up with old farts complaining about the waste of bytes for 
one ;)

-- 
   Bruce Campbell


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