Nagios Support Forum

Hi everyone,

I've been running Nagios since the early 2000s and the last upgrade we bumped to the latest (at the time) Nagios® Core™ Version 3.2.1 March 09, 2010

Ever since then it has been running rock solid until one day I noticed that the VM which runs it never had ESXi tools installed so I installed the 5.0.4540 which came stock with VM Ware. Nothing fancy there.

Well in few days it kills Nagios? I've duplicated this several times. It takes 2-3 days and Nagios starts reporting "page can not be displayed". The web server DOES answer on tcp 80 fine but no data comes to the browser. Restarting Nagios doesn't help. Rebooting - same. The only way to recover is to restore the snapshot BEFORE the VM Ware tools was installed. I'm more than convinced that the issue is VM Ware tools.

Has anyone seen this happen? Ideas?
Thank you

I can't say I've seen this personally, and I haven't heard of anyone else seeing the same thing. We can leave this open for community comment, but it does not sound like a Nagios issue.

Thanks; I am able to replicate the issue 100% of the time. Thank for for snapshots Just to add to the original post; I've tested the latest tools: VMware-Tools-10.0.0-3000743 and as soon as the installation is done within 15 minutes Nagios stops working and it reports "no data received" on the browser side. The web server itself does work; authentication works etc things related to apache but the Nagios CGIs are no longer producing data hence the blank pages. Thanks everyone

I concur with @tmcdonald, the only thing I would add is to consider migrating Nagios to a current version on a clean and current OS eg CentOS/RHEL 6/7.

Hypervisor guest utilities can often have unintended side effects.