Nagios Support Forum

Hello
I am looking for Nagios core upgrade documentation.
Need community support in below topics for Nagios core upgrade
1) Nagios core latest version supported OS details
2) Infra sizing details for Nagios core for latest version
3) how to download Nagios core package
4) Any libraries needed

There are lot of these information on their website. Here are a couple documents that I found on https://answerhub.nagios.com/support/s/knowledge

How to Upgrade Nagios Core: https://answerhub.nagios.com/support/s/ ... e-21e0ea9b
Upgrading Nagios Core: https://answerhub.nagios.com/support/s/ ... e-5e2b3c04
Upgrading Nagios Core From Source: https://answerhub.nagios.com/support/s/ ... e-036baba2

The OP could also just follow the upgrade instructions.

We have installed Nagios core 4.4.13 and Nagios plugins succesfully. Now we are looking for help in installing Nagios agents on linux and windows machines.
Also we need help on how to configure alerts for our infrastructure. Should we install separate config portal if so, how to achieve it?