#setsebool -P httpd_can_connect_zabbix on 

Error:

Job for zabbix-server.service failed because a configured resource limit was exceeded. See "systemctl status zabbix-server.service" and "journalctl -xe" for details.

Solution:

#yum install policycoreutils-python
#cat /var/log/audit/audit.log | grep zab | audit2allow -M zabbix-server
#semodule -i zabbix-server.pp