Agentless Windows monitors

[Michael Medin]

Andreas Ericsson wrote:

> Michael Medin wrote:
>
>>
>> Actually this can be done with a module for NSClient++ quite easily.
>
>
> That was the sort of re-design I had in mind. :)
>
>> My initial plan (before I started playing with NRPE) was to write a 
>> MS scripting host module to allow script to be 1, preloaded and more 
>> importantly 2, running in the "background" ie. collect data and such). 
>
>
> This is sort of "dangerous". Users will most likely think "why the 
> hell isn't my data fresh when I've told nagios to check it once ever 
> umpteenth second". Hooking up a module to add a new check though 
> (saving the load time) would indeed be extremely useful.
>

Sorry what I meant was not; run checks in the background; but run 
collections in the background and check average values (directly). Ie. 
average CPU load, etc...

>> But as NRPE will probably take a while to whip up that will probably 
>> not be for a few months or so...
>>
>>>>
>>>>>  I have
>>>>>  not rolled out thousands of these monitors yet, so I obviously
>>>>>  need to do some benchmarking to see just how scalable this approach
>>>>>  is.  To do it correctly, I need to use an enterprise level server
>>>>>  as the proxy host.  (if one intends to do large numbers of these
>>>>>  things this would make sense).
>>>>>
>>>>>
>>>>>
>>>>> One could, of course, use more than one proxy server.  That would
>>>>>  be scalable.  Nothing says that you can't have more than one of
>>>>>  these things out there.  Perhaps you could select one machine in
>>>>>  each domain and install nrpe-nt and these scripts on it.
>>>>>
>>>>
>>>> Yes, but is it really interesting to waste computer power on 
>>>> proxies? One must also consider the fact that the proxy will become 
>>>> a single point of failure (SOP running windows ... *shudder*). If 
>>>> the proxy goes down you'll loose monitoring on all the windows 
>>>> nodes and considering you have decided to invest in a proxy to 
>>>> monitor them, you probably have quite a few.
>>>>
>>>> One could ofcourse set up a redundant mesh of proxies and nagios 
>>>> servers but then we're eating up the time saved pretty fast.
>>>
>>>
>>>
>> Is there any support for that in Nagios ?
>
>
> The proxy redundancy would be better off handled through some other 
> means (linux HA, but on windows, sort of) with support for IP takeover.


Oki, but that would be (as you said) alot of overhead in configuration.


// Michael Medin



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