first of all, I’m not good at english…
I finished to install Icinga2 via a post
(https://www.itzgeek.com/how-tos/linux/centos-how-tos/enable-epel-repository-for-centos-7-rhel-7.html)
os : centos 7.7.1908
now I want to know how to setup mail notification
In my web, there is a notification sector but empty
what should i do?
please tell me step by step…
No offense(!), but if your knowledge is that basic I would advise you to carefully read the official documentation for Icinga 2!
It describes the setup of Icinga 2 and its components in detail and walks you through the different configuration objects with examples.
Installation process for every major distribution:
https://icinga.com/docs/icinga2/latest/doc/02-installation/
Monitoring basics (hosts/services, templates, apply rules, notifications and so on): https://icinga.com/docs/icinga2/latest/doc/03-monitoring-basics/
Reading through the docs will give you the basic knowledge to setup up a simple system and if you have specific issues then, just come back and ask on the forums 
thanks, @log1c
I saw that pages, but It’s hard for someone who doesn’t good at English like me…
anyway, thanks
Maybe try this tutorial additionally to the documentation
https://www.linuxtechi.com/install-configure-icinga2-centos-7-rhel-7/
https://www.linuxtechi.com/add-remote-linux-windows-host-icinga-2-monitoring/
