开启514端口

#$ModLoad imudp ==> 去掉注释

#$UDPServerRun 514 ==> 去掉注释

# Save boot messages also to boot.log

local2.* /var/log/local2.log #添加此行

重启日志服务

systemctl restart rsyslog

查看514端口是否已开启

ss -untl