如何使MySQL重新工作（缺少mysql.sock）

Question

我必须备份数据库，但是我的MySQL无法启动，无法连接到转储表。

我在服务器的任何地方都找不到mysql.sock，甚至没有my.cnf。 因此，请帮助我，将不胜感激。

尝试启动服务

root@v2201910106249100335: mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket /var/run/mysqld/mySqld.sock (2)

扩展日志

    NOV 24 00:05:35 V2201910106249100335 systemd[1]: Starting MariaDB 10.3.18 database server...
    -- Subject: A start Job for unit mariadb.service has begun execution
    -Defined-By: systemd
    -- Support: https://www.debian.org/support

    -A start job for unit mariadb.service has begun execution.

    -- The job identifier is 1239
    Nov 24 00:05:35 v2201910106249100335 systemd [4589]: mariadb.service: Failed to execute command: Permission denied
    Nov 24 00:05:35 V2201910106249100335 systemd [4589]: mariadb.service: Failed at step EXEC spawning /usr/sbin/mysqld: Permission d
    Subject Process /usr/sbin/mysqld could not be executed
    Defined-By: systemd
    Support: https://www.debian.org/support

    -- The process Usr/sbin/mysqld could not be executed and failed.

    -- The error number returned by this process is ERRNO
    Nov 24 00:05:35 v2201910106249100335 Systemd [1]: mariadb.service: Main process exited, code=exited, status=203/EXEC
    --- Subject: Unit process exited
    -- Defined-By: systemd
    Support https://www.debian.org/support

    -- An ExecStart process belonging to unit mariadb.service has exited.

    -- The process exit code is 'exited and Its exit status is 203.
    Nov 24 00:05:35 V2201910106249100935 systemd[1]: mariadb.service: Failed with result 'exit-code
    -- Subject: Unit failed
    --- Defined-By: systemd
    -- Support: https://www.debian.org/support

    -- The unit mariadb.service has entered the failed' state with result "exit-code.
    Nov 24 00:05:35 v2201910106249100335 systemd [1]: Failed to start MariaDb 10.3.16 database server.
    -- Subject: A start job for unit mariadb.service has fallen
    -- Defined-By: systemd
    Support: https://www.debian.org/support

    -- A start Job for unit mariadb.service has finished with a failure.

尝试运行MySQL

root @ v2201910106249100335：mysql错误2002（HY000）：无法通过套接字/var/run/mysqld/mySqld.sock连接到本地MySQL服务器（2）