[SPAM: Type H] - Re: Running java plugins in nagios - Email found in subject

[Thomas Schimpke]

Hi Andrew,

I'm really not sure. I'll make some tests, as soon as I've finished the
"plugin". Perhaps I'll be able to do some measurements also. Then we'll
see...

Thomas

 On Wed, 2004-09-08 at 14:53, Andrew Janian wrote:
> I have been watching this thread for a while.  I use JAVA checks often in nagios and have no problem.  The machine that it is running on has 8GB of RAM though.  I see no load on the machine and the checks run fine.  I think I have less than 10 running though.
> 
> You really think more than 10 would be bad for you?
> 
> Andrew
> 
> -----Original Message-----
> From: nagios-users-admin at lists.sourceforge.net
> [mailto:nagios-users-admin at lists.sourceforge.net]On Behalf Of Thomas
> Schimpke
> Sent: Wednesday, September 08, 2004 2:01 AM
> To: Sean Dilda
> Cc: Nagios List
> Subject: [SPAM: Type H] - Re: [Nagios-users] Running java plugins in
> nagios - Email found in subject
> 
> 
> Hi Sean,
> 
> someone else had written a nagios plugin and experienced the expected
> performance problems. There are some tuning parameters, though. But I
> think, that as soon as I use some 10 Java based checks, I'll be out of
> luck and the monitoring will break.
> 
> I also thought, that I should turn the plugin into a server, create some
> threads for the individual SAP checks and then use passive checks from
> nagios. The problem with this approach is, that there's another
> component, that can fail -- but your suggestion, to check the server is
> fine. I like the idea...
> 
> Thanks,
> 
> Thomas
> 
> On Tue, 2004-09-07 at 19:45, Sean Dilda wrote:
> > On Mon, 2004-09-06 at 03:03, Thomas Schimpke wrote:
> > > Hello,
> > > 
> > > is somebody on the list, who has some experience with running java
> > > plugins in nagios ? The technical integration is not the problem, but
> > > I'm having concerns about the java overhead (loading the VM,...). My
> > > fear is, that my monitoring server will simply be overloaded as soon, as
> > > there are some 10 java based checks running.  
> > 
> > Have you considered turning your java plugin into a daemon that runs on
> > the nagios server, does its own polling of SAP, then writes the results
> > as passive checks.  This way you'd only ever have on java VM running,
> > and you'd rarely have to launch it.
> > 
> > You could even expand that by turning on freshness checking and have the
> > check script for that be something that actually starts the java daemon
> > back up if it exited for any reason.  Although you'd want to use a
> > lockfile if you did that so you'd never get multiple copies of the
> > daemon running at once.
> > 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL: <https://www.monitoring-lists.org/archive/users/attachments/20040908/e820a117/attachment.sig>