Скачать или смотреть Fixing the ECONNREFUSED 127.0.0.1:3306 Error When Running Strapi on Digital Ocean

Struggling with the `ECONNREFUSED 127.0.0.1:3306` error while building Strapi on Digital Ocean? Discover the solution to this common issue and get your application running smoothly!
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This video is based on the question https://stackoverflow.com/q/71699211/ asked by the user 'Mr.D' ( https://stackoverflow.com/u/16847417/ ) and on the answer https://stackoverflow.com/a/74308945/ provided by the user 'Igor Perić' ( https://stackoverflow.com/u/1851207/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting: ECONNREFUSED 127.0.0.1:3306 Error on Digital Ocean

When deploying applications using Docker, it's common to encounter connectivity issues, especially when working with databases. One specific error that many developers face is the connect ECONNREFUSED 127.0.0.1:3306. If you've recently tried to run Strapi, a popular headless CMS, on a Digital Ocean server and encountered this error, you're not alone. But don’t worry! This guide will provide you with a clear solution.

Understanding the Problem

The ECONNREFUSED error indicates that your application (Strapi in this case) cannot establish a connection to the MySQL database running within your Docker container. This can happen for several reasons:

Incorrect Database Host Configuration: When running locally, 127.0.0.1 refers to your local machine. However, in Docker, this might not point to the intended service (in this case, your MySQL service).

Unmapped Ports: If the application can't access the database because the correct ports aren't mapped, you will face connectivity issues.

Network Configuration: Misconfigured Docker networks could prevent your services from communicating.

Solution: Adjust Your Docker Compose File

To resolve this issue, we need to ensure that the ports are properly mapped in your docker-compose.yml file. Here’s the updated version that addresses the ECONNREFUSED error:

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Explained:

Port Mapping:

ports: - "3306:3306": This line ensures that the host's port 3306 (where MySQL listens) is directly mapped to the container's port 3306. This allows Strapi (and any other process) to connect to the MySQL database without encountering a connection refusal.

Database Host:

Ensure that DATABASE_HOST: mysql is correctly set. Here, mysql refers to the MySQL service defined in the docker-compose.yml, allowing internal communication between containers.

Final Steps

After making these changes, save your docker-compose.yml file.

Run the following command in your terminal to rebuild and start your containers:

[[See Video to Reveal this Text or Code Snippet]]

Monitor the logs for any further errors, and make sure your Strapi application can connect to MySQL without issue.

Conclusion

Wrapping up, encountering the ECONNREFUSED 127.0.0.1:3306 error while using Docker on Digital Ocean doesn't have to be a roadblock. By ensuring proper port mapping and configuring the database host correctly, you can have your Strapi application running smoothly in no time.

Feel free to share your experiences or any further questions you might have in the comments below!