Remote monitoring

[Wojciech Kocjan]

On Tue, 12 Feb 2008 05:06:38 +0100, Paul Aviles  
<paul.aviles at nickelnetworks.com> wrote:

> I am looking for a way to remotely monitor Windows servers. The servers
> are on a  remote network and using network address translation so they
> are not directly accessible. I saw that Pandora uses an agent on the
> remote servers to connect via ssh to the main monitoring server and I
> like that idea, but I have not been able to see any documentation on how
> to do it with Nagios. In our configuration we cannot alter or open ports
> on the clients firewalls, but outgoing ssh traffic should not be an
> issue and I guess the monitoring server should not contact the remote
> servers.

Hi Paul,

I think it should be quite easy to use putty's plink to connect and tunnel  
nsclient++ using remote tunneling (-R option).

For example assuming NSClient is running on port 12489 you could run

plink -R 20001:127.0.0.1:12489 guestuser at nagiosserver

And then as long as the SSH connection stays open your nagiosserver will  
be able to access NSClient++ by connecting to 127.0.0.1 port 20001. You'd  
need to modify check_nt command a bit to always use 127.0.0.1 as an IP. If  
it's Nagios 3 you can also use custom variable (like _NSCLIENTPORT) in  
host definitions and reuse that in your version of check_nt command (using  
$_HOSTNSCLIENTPORT$).

The solution might not be robust enough if your network is not stable - in  
that case you might need a wrapper that will restart plink if a connection  
is down... I'm not sure if any working solutions for this exist. I'm  
curious myself as I wrote a small wrapper that checks for connection  
timeouts - and I'm wondering if there's any better solution on Windows.

-- 
Wojciech Kocjan

-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null