Troubleshooting DataHub MySQL Database Connection Issues

ingestion
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Original Slack Thread

Hey everyone, I’m trying to test DataHub, but I’m having trouble connecting to and reading data from my MySQL database. Could you provide some suggestions? I’ve already run the DataHub quickstart Docker setup and attempted to connect to MySQL through the ingestion process.

(Background on this error at: <https://sqlalche.me/e/14/e3q8>)```
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Hey there! :wave:

<@U06TM7M40RK> Can you help with the questions in this thread?

:information_source: Please continue to tag RunLLM (e.g <@U06TM7M40RK>) to have it continue generating responses!

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To address the issue of not being able to connect to your MySQL server during the DataHub ingestion process, here are some steps you can take:

  1. Check MySQL Container Health: Ensure that the MySQL container is running and healthy. You can do this by executing docker ps to see the status of your containers. If the MySQL container is not healthy, you might need to restart it or check the logs for errors.

  2. Port Conflicts: Verify that the MySQL port (default is 3306) is not being used by another service on your host machine. You can check for port conflicts using:

    sudo lsof -i :3306

    If another process is using the port, you can stop it or change the port for the MySQL container by using:

    datahub docker quickstart --mysql-port 53306

  3. Remove Existing MySQL Data: If there is data corruption, you might need to remove the existing MySQL data directory and restart the containers. This can be done with:

    docker-compose down
rm -rf /path/to/your/mysql/data/directory
docker-compose up

  4. Use datahub docker nuke Command: This command can help reset your Docker environment by removing all existing containers and volumes:

    datahub docker nuke
datahub docker quickstart

  5. Check MySQL Configuration: Ensure that your MySQL configuration in the ingestion recipe is correct. The host should be set to the correct address (e.g., localhost or the Docker network alias), and the credentials should match those set in your MySQL setup.

  6. Docker Network Issues: Sometimes, Docker network issues can cause connection problems. Ensure that your containers are on the same network and can communicate with each other.

If you need more detailed steps or run into specific errors, please let me know!

Sources:

  • <Slack discussion on MySQL issues> :+1: 0 button :-1: 0 button :bulb: Hint: Mention @runllm in the thread for followups.
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Hi, how did my answer work out for you? Need any more assistance? You can also tag <@U07FV3UHE4D> to let your fellow community members know you’re still looking for guidance.