centos7下 mysql5.7.9（8.0）启动失败问题_centos7下 mysql5.7.9(8.0)启动失败问题

在CentOS7下yum方式安装mysql正常，启动服务时失败，提示内容如下

输入命令systemctl status mysqld.service查看错误信息

[root@qin-server ~]# systemctl status mysqld.service
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2018-11-07 15:49:21 CST; 17s ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 7553 ExecStart=/usr/sbin/mysqld $MYSQLD_OPTS (code=exited, status=1/FAILURE)
  Process: 7532 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 7553 (code=exited, status=1/FAILURE)
   Status: "SERVE
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