Monitoring software question

Dan Egli ddavidegli at gmail.com
Wed Oct 9 02:40:10 MDT 2013


On October 7, 2013, at 8:37pm, Brian Christiansen wrote:



> NRPE: Active Check (Nagios initiating the check

> NSCA: passive check (the server initiating the check)



Now I'm lost. I thought Nagios ran on the server? If it does, how does NPRE
have Nagios initiate the check and NSCA have the server initiate the check.
That would be the same thing, wouldn't it?



Perhaps we have different setups in mind. In the setup I'm working on,
there is one "central server" and then a whole bunch (sounds like around
60) of "client stations" that will periodically pull workloads from the
internet, through the internet connection managed by the "central server".
What I'm looking for is to have that central server warn someone via e-mail
and other alert methods (SMS messaging, etc...) when one of the clients
either fails to respond to the ping or fails to see an active
(non-zombied!) process on any of the the client stations.



Would that be NRPE or NSCA?



Thanks!
--- Dan


On Mon, Oct 7, 2013 at 8:37 PM, Brian Christiansen <
brian.o.christiansen at gmail.com> wrote:

> You can also use NSCA to have the server forward the results to Nagios. You
> can configure Nagios to alert if it doesn't get a response, good or bad,
> from the server in a certain amount of time.
>
> NRPE: Active check (Nagios initiating the check)
> NSCA: passive check (the server initiating the check)
>
>
>
> On Mon, Oct 7, 2013 at 6:33 AM, Jeff Jibson <jeff.jibson at parentlink.net
> >wrote:
>
> > On Mon, Oct 7, 2013 at 6:04 AM, Josh Frome <jfrome at gmail.com> wrote:
> > >> Can Nagios (or any other network
> > >> monitor) actually connect to the server and read it's process table
> (or
> > in
> > >> some other way determine that the process is actually present)? I want
> > some
> > >> kind of central notification for this since the project deals with
> over
> > 40
> > >> systems each running a portion of the overall task.
> > >
> > > Yes. Nagios's check_nrpe command was designed specifically for this.
> > > The standard Linux NRPE client also includes a built-in script to
> > > count running processes by name, size, etc.  Additionally, if you have
> > > some more specific need, via NRPE, Nagios can run and return the
> > > results of any script you can write.
> > >
> > > As for notifications, Nagios also has a very powerful centrally
> > > managed notification and escalation system.
> > >
> > > JoshF
> > >
> > > /*
> > > PLUG: http://plug.org, #utah on irc.freenode.net
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> >
> > FYI: Nagios 4.0 was released a couple of weeks ago.
> >
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