Dynamically add/remove hosts on Nagios

[carlos at dsag.jazztel.es]

   Hi,

   By scripting, you can create a new file for your new host (or  
delete) and reload nagios.

   Not smart...

    Felipe Cecagno <fcecagno at gmail.com> ha escrito:

> Hi everybody,
>
> This is the first time I'm posting on this mailing list, so I'm sorry if my
> question was already discussed here - I tried to find information about it
> on the mailing list and also on Nagios documentation + googling, but
> couldn't find it.
>
> Well, I'm setting up Nagios to monitor a group of servers in a cloud
> environment. I decided to use passive checks, so I will have one Nagios
> central monitor and all servers push statistics to Nagios using NSCA.
> Everything is OK so far.
>
> The problem is that I want to add and remove instances dynamically, I don't
> want to manually modify hosts.cfg on the central each time I change my
> infrastructure. So my idea was that when a new instance gets up, it will
> send to Nagios something like (always using NSCA):
>
> "localhost     Server UP     0     <new instance IP>"
>
> On Nagios I would create a new service on localhost to handle this passive
> check.
> I've created a Python script (that uses pynag) to modify the hosts.cfg file
> in order to add and remove host definitions. When Nagios receives this
> passive check, I would call the script to modify the hosts definition
> files, and a cron job would execute every minute to look for modifications
> on hosts.cfg and make Nagios reload the definition files.
>
> My doubts are:
> - is there a smarter way to do that (dynamically add and remove hosts from
> Nagios)?
> - since my "Server UP" service uses passive checks only, how do I make
> Nagios call my script to modify hosts.cfg every time it receives the
> passive check?
>
> Any thoughts/suggestions would be appreciated. :)
>
> Thank you in advance,
> Best regards,
>
> --
>     Felipe Cecagno
>     Mconf Development Team
>     https://mconf.org
>


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2007 Jazztel - Jazz Telecom, S.A.U.         http://www.jazztel.com
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