Migrate nagios core 4.0.7 from linux oracle to ubuntu 22 machine

[pakhalepooja]

We are currently having 4.0.7 nagios core version on linux oracle OS but support is ending for OS so migrating the Nagios core 4.0.7 to ubunut 22 OS .
We have tried to install 4.5.x version and moved all files of 4.0.7 in it but application crashed with segmeneted fault error. We tried to install 4.0.7 version on ubuntu 22 so it is also failed. Can someone pls suggest what is the best way to migrate nagios 4.0.7 to ubuntu 22 machine

[danderson]

Thanks for reaching out @pakhalepooja,

Were you by any chance using any neb modules? If so, you'll have to recompile those in order to work with the updated headers in Core 4.5.X

[pakhalepooja]

How to check if we have neb module in the existing environment.

[danderson]

There will be a "broker_module" line in the main nagios config file, which is typically at /usr/local/nagios/etc/nagios.cfg