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.<div>
<br></div><div>Cheers,</div><div>Ian O</div><div><br><br><div class="gmail_quote">On Fri, May 28, 2010 at 6:14 AM, <span dir="ltr"><<a href="mailto:Kimmo.Lahteenlahti@nokia.com">Kimmo.Lahteenlahti@nokia.com</a>></span> wrote:<br>
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<div>Hi,</div>
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<div>I have Nagios installed on Ubuntu 8.04 running on Vmware Vsphere and Centos 5.4 running on IBM hs20 blade.</div>
<div>Both are identical setup and they are checking same servers.</div>
<div> </div>
<div>But for some reason in centos almost half of the checked host are flapping at any given time (40 host to check)</div>
<div>Biggest difference between this environments is that Ubuntu is using Nagios 3.0.6 and centos 3.2.1.</div>
<div> </div>
<div>Have any of you noted similar behavior ?</div>
<div> </div>
<div>I followed this guide when installing nagios to centos:</div>
<div><a href="http://docs.cslabs.clarkson.edu/wiki/Install_Nagios_on_CentOS_5" target="_blank"><font color="#0000FF"><u>http://docs.cslabs.clarkson.edu/wiki/Install_Nagios_on_CentOS_5</u></font></a></div>
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<div>And for some reason I can’t stop nagios service in the Centos:</div>
<div>/etc/init.d/nagios stop</div>
<div>nagios (pid 2647) is running...</div>
<div>Stopping nagios: [FAILED]</div>
<div> </div>
<div>Or restart:</div>
<div>/etc/init.d/nagios restart</div>
<div>Stopping nagios: [FAILED]</div>
<div>Starting nagios:</div>
<div> </div>
<div>Restart via nagios.cmd works. Any idea why this is happening ?</div>
<div> </div>
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<li>Kimmo</li></ul>
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