Nagios host flapping on centos 5.4 ?

[Ian Orszaczki]

Hi, this might be a similar issue I had. I had tried to stop Nagios as the
wrong user and then restarted as root. That left rogue Nagios processes
running which meant inconsistent behaviour as both were running checks and
writing results.  I suggest killing all nagios processes manually and
ensuring none are running and then starting nagios.

Cheers,
Ian O


On Fri, May 28, 2010 at 6:14 AM, <Kimmo.Lahteenlahti at nokia.com> wrote:

>  Hi,
>
> I have Nagios installed on Ubuntu 8.04 running on Vmware Vsphere and Centos
> 5.4 running on IBM hs20 blade.
> Both are identical setup and they are checking same servers.
>
> But for some reason in centos almost half of the checked  host are flapping
> at any given time (40 host to check)
> Biggest difference between this environments is that Ubuntu is using Nagios
> 3.0.6 and centos 3.2.1.
>
> Have any of you noted similar behavior ?
>
> I followed this guide when installing nagios to centos:
> *http://docs.cslabs.clarkson.edu/wiki/Install_Nagios_on_CentOS_5*<http://docs.cslabs.clarkson.edu/wiki/Install_Nagios_on_CentOS_5>
>
> And for some reason I can’t stop nagios service in the Centos:
> /etc/init.d/nagios stop
> nagios (pid  2647) is running...
> Stopping nagios:                                           [FAILED]
>
> Or restart:
> /etc/init.d/nagios restart
> Stopping nagios:                                           [FAILED]
> Starting nagios:
>
> Restart via nagios.cmd works. Any idea why this is happening ?
>
>
>    - Kimmo
>
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>
>
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