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How discover host across networks

Posted: Wed Jan 22, 2014 9:01 am
by Jacksonrb
Hi people,
I'm really new in Nagios (3 hours of experience...). I need a help in discovery hosts across networks, I only need a keyword, name of components, etc..
My environment is a management network (10.0.0.0, for exemple) and need to monitor my server farm network (192.168.1.0). I have a server with dual network: one leg in mgmt network and other leg in server network, and this server is my "gateway" to monitor.

My doubts is: What I need install in this "gateway server" to my Nagios can monitor my servers?
I try use NRDS, but dosen't work.

Thank you so much in advantage.

Jackson

Re: How discover host across networks

Posted: Wed Jan 22, 2014 10:40 am
by tmcdonald
Discovering and monitoring are two completely different things, and will have different methods. Which are you trying to accomplish?

Re: How discover host across networks

Posted: Wed Jan 22, 2014 11:30 am
by Jacksonrb
Hi tmcdonald,

My objetive is monitor devices. In my mind, discovery is a process to find devices (search by ip range), and after this I can select devices to monitor.
Now I can monitor devices in the same subnet as Nagios is installed (install NSClient and add one by one in the "monitor wizard - Windows server" for exemple).
My next objetive is monitor my production server farm, that is in other subnet.

Thank you

Re: How discover host across networks

Posted: Wed Jan 22, 2014 2:25 pm
by slansing
If you can route to that network properly, you should still be able to run auto-discovery, as it uses NMAP. Have you tried manually running NMAP against that subnet? If it fails, you will have to figure out routing with your network team.

Re: How discover host across networks

Posted: Wed Jan 22, 2014 2:51 pm
by Jacksonrb
Hi slansing, thank you for your attention.

But unfortunally I have two network physically separated. We provide NOC service to customers and actually we use Microsoft SCOM, that have a component installed in a server into customer site. This component collect information from customer's devices and connect/send to my SCOM server across VPN.
If Nagios don't have this topollogy of component, I believe that I need publish my Nagios to internet with a valid IP address.
Someone have this scenario and/or have some advice, mainly about security factors in communicate client-server information over internet?


Thank you guys for your help

Jackson

Re: How discover host across networks

Posted: Wed Jan 22, 2014 4:53 pm
by slansing
In this scenario we typically see users forward check results passively from one system across the wire to the main XI server. You can set this up by using this documentation:

http://assets.nagios.com/downloads/nagi ... ith_XI.pdf

Re: How discover host across networks

Posted: Fri Jan 24, 2014 8:45 am
by Jacksonrb
Thank you slansing. Works like a charm!!!

Re: How discover host across networks

Posted: Fri Jan 24, 2014 10:19 am
by tmcdonald
Awesome! If you don't have any more related questions I will be closing this thread up now.

Re: How discover host across networks

Posted: Mon Jan 27, 2014 7:13 am
by Jacksonrb
Hi tmcdonald, you can close this thread. thaks