[Check_mk (english)] GEARMAN compatibility withCheck_MK andMultisite - omd-1.20

Andreas Döhler andreas.doehler at gmail.com
Fri Aug 14 19:09:17 CEST 2015


The cores are not beta or testing :)

For your performance problem it needs to find the cause of this problem.
Most issues I saw where I/O problems with your underlaying disk systems and
this problems get bigger with the usage of virtualization. Two instances on
the same server are completely separate but use the same "hardware".

Best regards
Andreas

Matthew Laub <mjlaub at mmm.com> schrieb am Fr., 14. Aug. 2015 16:30:

> Thanks for the reply!
>
>
>
> However, I really don’t want to run test/beta cores. I would rather use
> the stable releases.
>
>
>
> As a follow up question, then, would running multiple “sites” on just one
> server use the same internals? Or do you create a truly separate instance
> of Check_MK/omd when you create more “sites” on the same server? If they
> are truly separate, then using multisite to integrate the view of all would
> be another option to spread the load, but fully utilize a servers resources.
>
>
>
> Thanks!
>
> -Matt
>
>
>
> *From:* Andreas Döhler [mailto:andreas.doehler at gmail.com]
> *Sent:* Thursday, August 13, 2015 11:34 AM
> *To:* Matthew Laub <mjlaub at mmm.com>; checkmk-en at lists.mathias-kettner.de
> *Subject:* [EXTERNAL] Re: [Check_mk (english)] GEARMAN compatibility with
> Check_MK andMultisite - omd-1.20
>
>
>
> It is not possible to use a distributed Gearman setup with Check_MK only
> running locally this should work but no one will guarantee.
>
> The problem is the point how Check_MK handles the check results if i
> remember it the correct way.
>
>
>
> What should work is to test some of the new cores available inside the
> testing repo from Consol or make some tests with the Check_MK Micro Core
> from the test version of Check_MK enterprise edition. Booth cores should
> show an improved performance of your system.
>
>
>
> Best regards
>
> Andreas
>
>
>
> Matthew Laub <mjlaub at mmm.com> schrieb am Do., 13. Aug. 2015 um 18:12 Uhr:
>
> Hi,
>
>
>
>         I would like to know if there is any issues running GEARMAN with
> Check_MK and Multisite.
>
>
>
> I have noticed some performance hits with the standard OMD/Check_MK
> installation once I reach ~200 hosts and ~5k checks. This does not seem to
> have anything to do with system resources. It looks like the server (VM)
> could be doing quite a bit more work, but doesn’t. I am wondering if this
> is a scaling issue internal to the software, and can I use Gearman to
> alleviate the possible internal bottlenecks.
>
>
>
> I am using a RHEL 6.6 VM with the stock omd-1.20 distribution, and
> Check_MK selected as the default Web GUI.
>
>
>
> Stopping omd on a test implementation, that is not multisite enabled, and
> executing “omd config set MOD_GEARMAN on” seems to work just fine. The
> Gearmand process and workers spawn, and it looks like everything is happy.
> However, there is no mention of this alternative setup on the Check_MK
> website. I could only find mention of it in passing in the lists here, but
> no real detail. The ConSol Labs website mentions it with the OMD
> distribution, but fails to mention compatibility with Check_MK and
> Multisite. I did find some mention that it is not compatible from article
> dating back to 2011 and earlier, but no mention of it lately. So I am
> unsure if this earlier issue has been worked out, not that it is included
> in the OMD distribution itself.
>
>
>
> So, is GEARMAN a hidden feature that is not advertised? or is it not
> compatible in some way to Check_MK and Multisite? Does anyone know?
>
>
>
> It would be AWESOME if this information was included on the webpage
> http://mathias-kettner.com/checkmk_install_with_omd.html
>
>
>
> Thanks!
>
> -Matt
>
>
>
>
>
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