我有四个使用mgt-commerce/mgt-development-environment-7.2的容器。基本上，一切运行良好，直到无法访问控制面板为止。它返回500。
检查服务，日志等后，似乎mysql无法启动。这是使用/var/log/mysql/error.log启动mysql服务期间在sudo service mysql start中捕获的错误日志。
2019-09-26T23:38:43.740283Z mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2019-09-26T23:38:43.921450Z 0 [Note] /usr/sbin/mysqld (mysqld 5.7.26-29) starting as process 1576 ...
2019-09-26T23:38:43.924613Z 0 [Note] InnoDB: PUNCH HOLE support available
2019-09-26T23:38:43.924635Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2019-09-26T23:38:43.924639Z 0 [Note] InnoDB: Uses event mutexes
2019-09-26T23:38:43.924642Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2019-09-26T23:38:43.924644Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-09-26T23:38:43.924647Z 0 [Note] InnoDB: Using Linux native AIO
2019-09-26T23:38:43.924859Z 0 [Note] InnoDB: Number of pools: 1
2019-09-26T23:38:43.924920Z 0 [Note] InnoDB: Using CPU crc32 instructions
2019-09-26T23:38:43.925849Z 0 [Note] InnoDB: Initializing buffer pool, total size = 1G, instances = 8, chunk size = 128M
2019-09-26T23:38:43.946744Z 0 [Note] InnoDB: Completed initialization of buffer pool
2019-09-26T23:38:43.955252Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2019-09-26T23:38:43.966654Z 0 [Note] InnoDB: Recovering partial pages from the parallel doublewrite buffer at /var/lib/mysql/xb_doublewrite
2019-09-26T23:38:44.033822Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2019-09-26T23:38:44.033986Z 0 [ERROR] InnoDB: Operating system error number 13 in a file operation.
2019-09-26T23:38:44.034023Z 0 [ERROR] InnoDB: The error means mysqld does not have the access rights to the directory.
2019-09-26T23:38:44.034040Z 0 [ERROR] InnoDB: Plugin initialization aborted with error Generic error
2019-09-26T23:38:45.135220Z 0 [ERROR] Plugin 'InnoDB' init function returned error.
2019-09-26T23:38:45.135270Z 0 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2019-09-26T23:38:45.135283Z 0 [ERROR] Failed to initialize builtin plugins.
2019-09-26T23:38:45.135291Z 0 [ERROR] Aborting
2019-09-26T23:38:45.135301Z 0 [Note] Binlog end
2019-09-26T23:38:45.135371Z 0 [Note] Shutting down plugin 'CSV'
2019-09-26T23:38:45.136207Z 0 [Note] /usr/sbin/mysqld: Shutdown complete
使用此图片的人是否会遇到这种错误？
更新
似乎mysql没有访问特定文件或目录的权限，但是我不确定哪个文件或目录的权限。这是mysql数据目录的权限：
clp@magento2dev:/$ ls -la /var/lib | grep mysql
drwxr-x--- 1 mysql mysql 4096 Sep 26 23:38 mysql
drwxrwx--- 2 mysql mysql 4096 Jul 11 15:24 mysql-files
drwxr-x--- 2 mysql mysql 4096 Jul 11 15:24 mysql-keyring