我的Amazon Linux上的MySQL突然停止工作，这是我的命令的输出：
[ec2-user@ip-10-0-0-16 log]$ sudo service mysqld start
Redirecting to /bin/systemctl start mysqld.service
Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.
[ec2-user@ip-10-0-0-16 log]$ systemctl status mysqld.service
● mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Tue 2018-12-11 03:44:10 UTC; 3s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 5558 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=1/FAILURE)
Process: 5540 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: Failed to start MySQL Server.
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: Unit mysqld.service entered failed state.
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: mysqld.service failed.
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: mysqld.service holdoff time over, scheduling restart.
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: start request repeated too quickly for mysqld.service
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: Failed to start MySQL Server.
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: Unit mysqld.service entered failed state.
Dec 11 03:44:10 ip-10-0-0-16.ec2.internal systemd[1]: mysqld.service failed.
我不明白，为什么mysql突然突然停止工作并进入失败状态？
我还确保/ var / log / mysql存在，它的所有权是mysql：mysql，并且CHMOD权限是755。
有人知道为什么它会那样停止工作吗？