Nagios Support Forum

Dear Team,

We have configured VMWare host and guest with monitoring wizard. In that we are getting checks and respective result of that checks, but we are facing issues when guest system is migrating in another host, its sending alert "Host does not exist".

We need solution: if system migration happen from one host to another host in cluster, system should be able to monitor by NagiosXI.

We dont want to break graphs which is happening, when system is migrating.


Please help on this.

Unfortunately this is the behaviour of the VMware monitoring wizard and how it creates the services against an ESXi host. I'm assuming to fix the problem you are assigning the service to another ESXi host and this is why you are loosing the performance data.

If you want to preserve the performance data, you can use a third party tool (I created) called the Performance Data Tool. It allows you to merge .rrd files which solves the immediate problem (The old performance data is still on the system, it's just no longer being updated). It can be downloaded here:

http://exchange.nagios.org/directory/Ad ... ol/details


I suggest you check out a different VMware plugin called box293_check_vmware (which also happens to be created by me). It is specifically written to work in vCenter environments, so when a monitored VM is moved from one host to another Nagios will not be affected. It can be downloaded here:

http://exchange.nagios.org/directory/Pl ... re/details

NOTE: This Plugin is NOT designed to be run on your Nagios host, instead it is offloaded to the VMware vSphere Management Assistant (vMA). This is due to some performance issues that occur with the VMware SDK which can easily overload your Nagios host.

How all of this works is explained in the manual including full instructions to get you up and running as quickly as possible.