Agentless Windows monitors

[Michael Medin]

Andreas Ericsson wrote:

> Glenn Meisenheimer wrote:
>
>> Hi Andreas               
>>
>>>
>>> And hopefully, if you have Windows systems in your infrasturcture
>>>  you shouldn't find it too confusing to set up a user.
>>>
>>>
>>>
>>> Now your earlier point of scalability bears investigation.
>>
>>
>> Common sense says it will work poorly. If the proxy could have a 
>> script server that would greatly reduce the load, as code doesn't 
>> need to be initialized every time. That would call for a complete 
>> re-design of nrpe-nt though, so it's probably better to start from 
>> scratch.
>

Actually this can be done with a module for NSClient++ quite easily. 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). 
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 ?
Thoretically you could set it up I soppose using parents and such but a 
"redundant" check would solve this pretty simple.
ie. "check_using_one_of -H1 -H2 -H3 -c check_nrpe .... " Having it check 
untill it finds a host that responds.
And a check_using_all_of might similarily be of use, but what do I know :)


>>
>>>
>>>
>>> Now, where to find an enterprise server that I can appropriate for
>>>  this testing... hehe  Might be time for a midnight foray through
>>>  the lab!
>>>
>>
>> Don't forget the 3am lunar toast. ;)
>>
>>>
>>>
>>> Glenn A. Meisenheimer
>>>
>>> Customer Support Manager
>>>
>>> Groundwork Open Source Solutions
>>>
>>>
>>>
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>>



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