mysql - (Amazon Linux) MySQL 在 EC2 重启时停止工作

Question

我的 Amazon Linux 上的 MySQL 突然停止工作，以下是我的命令的输出:

[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会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。

有谁知道为什么它会这样停止工作？

Answer 1

重新安装MySQL即可。您不会丢失数据库，它们仍然完好无损，并且可以通过与以前相同的用户名/密码进行访问:

这适用于 Amazon Linux:

$ sudo yum -y remove mysql-server
$ wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm 
$ sudo yum localinstall mysql57-community-release-el7-8.noarch.rpm 
$ sudo yum install mysql-community-server 
$ sudo service mysqld start