Follow instructions here
https://www.fosslinux.com/7705/how-to-install-and-configure-zabbix-on-centos-7.htm
Remember to install zabbix-web. Otherwise web page will not be loaded.
Remove mysql all installed packages and install mariaDB
Fix for charset issue of Database
https://www.zabbix.com/documentation/current/manual/appendix/install/db_charset_coll
How to setup a host
https://www.youtube.com/watch?v=_qU7ng9m6ms
How to setup Email
https://techexpert.tips/zabbix/zabbix-email-notification-setup/
How to integrate PagerDuty for mobil notificarions
https://www.pagerduty.com/docs/guides/zabbix-3-integration-guide/
