Nagios Support Forum

Hi,

I have been trying to get the detailed configuration and/or changes the OVA image have over a minimal install of CentOS but could not find that information anywhere. As there is no OVA with CentOS 8 yet, I'm about start the install of a new NagiosXI 5.7 on a fresh RHEL8 and I'm wondering if there is some kind of kernel tuning or configuration defined on the OVA to improve the performance.

I have downloaded the OVA and tried to have a look in the config but could not find anything remarkable.

Hi,

I'm about start the install of a new NagiosXI 5.7 on a fresh RHEL8 and I'm wondering if there is some kind of kernel tuning or configuration defined on the OVA to improve the performance.

As far as I know, it's more or less a stock system, and you shouldn't need to make any kernel changes right away on a RHEL 8 system. What size system are you planning to deploy, the total number of hosts and services?

Once you get XI installed, I highly recommend you follow the guide below to increase the default PHP settings.

Nagios XI - Optimizing The PHP Settings File

Also, check out the following guide for improving performance in Naigos XI. Let me know if you have further questions.

Maximizing Performance In Nagios XI

Hi

The idea is migrate our current Nagios 5.4.12 on Cents 6 (OVA) to this new deployment so the same number of host (1688) and services (15290) will be monitored. At the same time, we are going to migrate from Nsclient++ and NRPE to NCPA so I have quite a lot of work in the next few months.

Our current set-up have been tweaked by Nagios support over the time from different performance issue we have been having so I was planning on using those parameters.

Hi,

Ok, thanks for the clarification. Also, just want to let you know that your Nagios XI license allows for 3 activations, production, test, and backed up. So you can make any modifications to the test server until your ready to move this into production.

https://support.nagios.com/kb/article.php?id=145

Good luck with the migration and just let us know if you have any more questions.