21296:20180622:210738.561 Starting Zabbix Server. Zabbix 4.0.0alpha8 (revision 81985).
21296:20180622:210738.561 ****** Enabled features ******
21296:20180622:210738.561 SNMP monitoring: YES
21296:20180622:210738.561 IPMI monitoring: YES
21296:20180622:210738.561 Web monitoring: YES
21296:20180622:210738.561 VMware monitoring: YES
21296:20180622:210738.561 SMTP authentication: YES
21296:20180622:210738.561 Jabber notifications: YES
21296:20180622:210738.561 Ez Texting notifications: YES
21296:20180622:210738.562 ODBC: YES
21296:20180622:210738.562 SSH2 support: YES
21296:20180622:210738.562 IPv6 support: YES
21296:20180622:210738.562 TLS support: YES
21296:20180622:210738.562 ******************************
21296:20180622:210738.562 using configuration file: /etc/zabbix/zabbix_server.conf
21296:20180622:210738.566 current database version (mandatory/optional): 03050110/03050110
21296:20180622:210738.566 required mandatory version: 03050120
21296:20180622:210738.567 starting automatic database upgrade
21296:20180622:210738.567 [Z3005] query failed: [1060] Duplicate column name 'severity' [alter table `events` add `severity` integer default '0' not null]
21296:20180622:210738.567 database upgrade failed