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Asked: 2024-09-27T08:34:12+05:30 In: ,

can’t connect to local mysql server through socket ‘/tmp/mysql.sock’ docker

I’m currently facing an issue while trying to connect to my MySQL server running in a Docker container. Every time I attempt to connect, I keep getting the error message: “Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’.” It’s really frustrating because I’ve followed several guides for setting up MySQL in Docker, and I thought I had everything configured properly.

I’ve started my MySQL container using the command `docker run -d -p 3306:3306 –name my-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw mysql`. The container seems to be running fine when I check with `docker ps`, and I can see the MySQL server is up. However, when I try to connect using the command line or a tool like MySQL Workbench, it keeps looking for the socket in the `/tmp` directory, which doesn’t exist within the container.

I’m not sure if this is a permissions issue, a configuration problem, or if I’m missing something essential in the command I used to start the container. Can anyone shed some light on how to resolve this connection problem? Any guidance would be greatly appreciated!

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    2 Answers

    1. So, like, I’m trying to connect to my MySQL server in Docker, but I’m getting this error about not being able to find the socket at ‘/tmp/mysql.sock’ or something. It’s like, what’s a socket anyway? 🤔

      I feel like I might have messed up something when I set up my Docker container? Maybe I didn’t start the MySQL service? I dunno, but I keep thinking maybe I need to check if MySQL is actually running inside the container. 😅

      Oh, and I’ve heard of this thing called ‘docker-compose’ too. Maybe I should try using that to set up my services instead of starting them manually? I read somewhere that it can help with all the connections and stuff.

      Also, do I need to tell Docker where to find the MySQL socket? Like, maybe I can just change the configuration or something? I saw some config files in the container, but I’m kinda lost on how to edit those.

      If that doesn’t work, maybe I could check the logs of the MySQL container for any clues? I think it might just take a little bit of poking around to figure this out. Anyway, I’m just stumbling through this, hoping it will click eventually! 🤷‍♂️


    2. The error message indicating that you “can’t connect to local MySQL server through socket ‘/tmp/mysql.sock'” typically arises in Dockerized environments due to a few common reasons. Ensure that the MySQL container is running and that you’re connecting to the correct service within your Docker setup. In a typical Docker Compose scenario, if you’re attempting to connect to the MySQL instance from another container, you should use the service name instead of `localhost` or `127.0.0.1` to reference the database. For instance, if your MySQL service is named `db`, the connection string might look something like `mysql -h db -u root -p` instead of using a socket.

      Additionally, it’s worth checking your MySQL server’s configuration and the way the database is set up within the container. If your application is trying to access MySQL through a socket file that is not correctly mapped, the connection will fail. You can typically resolve this issue by binding the MySQL server to listen on all interfaces by modifying the MySQL configuration to use TCP/IP rather than relying on the socket file. You may also need to ensure that the MySQL server has fully initialized and is ready to accept connections, which can sometimes take a moment during container startup. Monitoring the server logs can provide insight into its status and any issues that may need to be addressed.

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