Running MySQL 8 in Docker with Windows Host (WSL) the volumen for data directory is unusable

Im facing a problem when trying to run a MySQL 8.0 Docker in a Windows Host, using WSL2 integration.

So, the enviroment:

1- Host: Windows 10 Professional.

2- Docker v19.03

The command to run the docker:

docker run \
    -i \
    --name mysqlbase \
    -e "MYSQL_ROOT_PASSWORD=s3cret" \
    -p 3306:3306 \
    -v $(pwd)/data:/var/lib/mysql \
    mysql:8.0

In the directoty /data the directories and files are created:

And the result the execution:

Initializing database
mysqld: Cannot change permissions of the file 'ca.pem' (OS errno 1 - Operation not permitted)
2020-11-11T23:29:03.663345Z 0 [Warning] [MY-011070] [Server] 'Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it' is deprecated and will be removed in a future release.
2020-11-11T23:29:03.663764Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.16) initializing of server in progress as process 30
2020-11-11T23:29:03.670814Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /var/lib/mysql/ is case insensitive
2020-11-11T23:29:03.671189Z 0 [Warning] [MY-010122] [Server] One can only use the --user switch if running as root
2020-11-11T23:29:19.833339Z 0 [ERROR] [MY-010295] [Server] Could not set file permission for ca.pem
2020-11-11T23:29:19.833377Z 0 [ERROR] [MY-013236] [Server] Newly created data directory /var/lib/mysql/ is unusable. You can safely remove it.
2020-11-11T23:29:19.833522Z 0 [ERROR] [MY-010119] [Server] Aborting
2020-11-11T23:29:22.394972Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.16)  MySQL Community Server - GPL.

The problem: Newly created data directory /var/lib/mysql/ is unusable

Using MySQL:5.6 works like a charm... but i need 8.

Update: I suspect something with the mysql user who must have ownership of the directory. I've already tried creating a mysql user on Windows, got its uid, and modified the Dockerfile (https://github.com/docker-library/mysql/blob/1a25a09159a3d7b6b5b8ad0e6c7eb53504b3aab5/8.0/Dockerfile) so that when it creates the image it assigns the same uid to it, but it doesn't work. The 16342 correspond the Windows user's id.

RUN groupadd -r mysql && useradd -u 16342 -r -g mysql mysql

I've read all question about that... but nothing work... any ideas?

Thanks in advance

Solution 1:

Instead of mounting a local directory as a volume, try to use a docker-managed named volume.

The big difference is that this volume won't be subject to the limitations of windows file systems, which seems to be what's causing the issue here.

When using docker for a development database, this is generally what you want, since it keeps volume data well out of the way and doesn't mess with the local directory at all.