но в консоли всё ОК
sysadmin@zabbix:/usr/share/doc/zabbix-server-mysql$ service zabbix-server status
● zabbix-server.service - Zabbix Server
Loaded: loaded (/lib/systemd/system/zabbix-server.service; disabled; vendor preset: enabled)
Active: active (running) since Fri 2021-03-05 18:55:00 UTC; 7s ago
Process: 18883 ExecStart=/usr/sbin/zabbix_server -c $CONFFILE (code=exited, status=0/SUCCESS)
Main PID: 18899 (zabbix_server)
Tasks: 1 (limit: 4600)
Memory: 3.6M
CGroup: /system.slice/zabbix-server.service
└─18899 /usr/sbin/zabbix_server -c /etc/zabbix/zabbix_server.conf
Mar 05 18:55:00 zabbix systemd[1]: Starting Zabbix Server...
Mar 05 18:55:00 zabbix systemd[1]: Started Zabbix Server.
Что проверять?