我已经使用 docker 安装了 MySQL，直到出现此错误之前它才工作，我的笔记本电脑由于某种原因关闭，我重新启动了我的虚拟机（在 Fedora 27 上），当我尝试启动 mysql 服务时，我面临以下错误。我也尝试开始sudo service docker restart我得到同样的错误。所以我无法启动docker或mysql服务器，最后我删除了docker安装的软件包sudo dnf remove docker-ce，然后安装MySQL 5.7社区服务器参考MySQL 5.7安装指南
我不知道我的 Linux 操作系统级别是否有任何损坏？？？
[ravibeli@localdomain ~]$ sudo service mysqld start
Logs:
[sudo] password for ravibeli:
Starting mysqld (via systemctl): Job for mysqld.service failed because the control process exited with error code.
See "systemctl status mysqld.service" and "journalctl -xe" for details.
[FAILED]
当我运行“journalctl -xe”时，显示以下错误消息，并且无法修复它？在 VM (Fedora 27) 上解决此问题的方法是什么
[ravibeli@localdomain ~]$ journalctl -xe
May 07 16:06:53 localdomain sudo[6971]: pam_unix(sudo:session): session opened for user root by (uid=0)
May 07 16:06:53 localdomain audit[6971]: USER_START pid=6971 uid=0 auid=1000 ses=2 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:sess
May 07 16:06:53 localdomain systemd[1]: Starting SYSV: MySQL database server....
-- Subject: Unit mysqld.service has begun start-up
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has begun starting up.
May 07 16:06:53 localdomain mysqld[8145]: chown: invalid user: ‘mysql:mysql’
May 07 16:06:54 localdomain audit[726]: USER_AVC pid=726 uid=81 auid=4294967295 ses=4294967295 subj=system_u:system_r:system_dbusd_t:s0-s0:c0.c1023 msg='avc:
exe="/usr/bin/dbus-daemon" sauid=81 hostname=? addr=? terminal=?'
May 07 16:06:54 localdomain mysqld[8145]: Initializing MySQL database: 2018-05-07T10:36:54.847676Z 0 [Warning] TIMESTAMP with implicit DEFAULT value is depre
May 07 16:06:54 localdomain mysqld[8145]: 2018-05-07T10:36:54.851156Z 0 [ERROR] Fatal error: Can't change to run as user 'mysql' ; Please check that the user
May 07 16:06:54 localdomain mysqld[8145]: 2018-05-07T10:36:54.851678Z 0 [ERROR] Aborting
May 07 16:06:54 localdomain mysqld[8145]: [FAILED]
May 07 16:06:54 localdomain systemd[1]: mysqld.service: Control process exited, code=exited status=1
May 07 16:06:54 localdomain systemd[1]: Failed to start SYSV: MySQL database server..
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
May 07 16:06:54 localdomain systemd[1]: mysqld.service: Unit entered failed state.
May 07 16:06:54 localdomain systemd[1]: mysqld.service: Failed with result 'exit-code'.
May 07 16:06:54 localdomain audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=mysqld comm="systemd
May 07 16:06:54 localdomain sudo[6971]: pam_unix(sudo:session): session closed for user root
May 07 16:06:54 localdomain audit[6971]: USER_END pid=6971 uid=0 auid=1000 ses=2 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:sessio
May 07 16:06:54 localdomain audit[6971]: CRED_DISP pid=6971 uid=0 auid=1000 ses=2 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:setcr
lines 1393-1422/1422
答案1
日志日志表明用户mysql可能不存在。从上面我可以看到你是以用户身份登录的拉维贝利。
Fatal error: Can't change to run as user 'mysql' ; Please check that the user
检查用户是否mysql运行以下命令，它应该返回一个有效的用户 ID，如果不存在，则该用户不存在，您需要解决这个问题 - 很可能是 mysqld 或 Docker 配置问题：
id -u mysql
如果用户确实存在，请尝试使用系统控制启动服务：
systemctl start mysqld.service
这mysqld服务有一个日志文件位于/var/log/mysqld.log，如果上述方法均不起作用，则此日志文件可能包含有关该问题的更多详细信息 - 请将其添加到您的问题中，我们也许能够为您提供进一步帮助。
正如您所说，用户和组确实存在，请/var/lib/mysql通过运行以下命令检查哪个用户拥有该文件夹：
ls -l /var/lib/mysql
如果mysql用户不拥有该文件，然后使用以下命令更改所有权：
chown mysql:mysql -R /var/lib/mysql