CentOS7.6啓動Zabbix4.0時，報出如下錯誤（錯誤沒保存，從網上其他位置複製而來）：
[root@iZuf6fdluqx20hmkk68ndfZ zabbix]# systemctl start zabbix-server
Job for zabbix-server.service failed because a configured resource limit was exceeded. See "systemctl status zabbix-server.service" and "journalctl -xe" for details.
[root@iZuf6fdluqx20hmkk68ndfZ zabbix]# journalctl -xe
--
-- Unit zabbix-server.service has begun starting up.
Apr 18 22:21:06 localhost.localdomain systemd[1]: PID file /run/zabbix/zabbix_server.pid not readable (yet?) after start.
Apr 18 22:21:06 localhost.localdomain systemd[1]: zabbix-server.service never wrote its PID file. Failing.
Apr 18 22:21:06 localhost.localdomain systemd[1]: Failed to start Zabbix Server.
-- Subject: Unit zabbix-server.service has failed
試了幾種辦法沒有解決，最終重啓服務器解決。