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Troubleshoot the common reasons behind Laravel's "SQLSTATE[HY000] [2002] Connection refused" error when your database access via Sequel Pro is working fine.
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Why is my Laravel app showing "Connection refused" despite successful Sequel Pro access?

If your Laravel application is displaying the "SQLSTATE[HY000] [2002] Connection refused" error, it can be particularly frustrating, especially when you are able to successfully access your MySQL database via Sequel Pro. Let’s explore some common reasons and solutions for this issue.

Possible Reasons for the Error

Database Configuration in .env File
One of the most common culprits is an incorrect database configuration in your Laravel project's .env file.

Ensure that the configuration matches the actual database credentials:

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

Key Points to Check:

Correct DB_HOST: Ensure it's set to 127.0.0.1 or localhost depending on your setup.

Accurate DB_PORT: The default MySQL port should usually be 3306.

MySQL Server Not Running
Make sure that the MySQL server is running. You can check the service status and restart it if necessary:

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

Firewall and Network Issues
Firewalls or network configurations can block connections to your MySQL database. Ensure the port 3306 is open and not being blocked by firewalls either on the local machine or the network.

Socket Configuration
On some systems, MySQL may not run on the default socket path. Check your MySQL configuration and ensure Laravel's database configuration points to the correct socket path. This is rarely an issue but worth investigating if other methods fail.

Homestead Specific Configuration
If you are using Laravel Homestead, which is a Vagrant box designed for Laravel development, ensure that you are using the appropriate Homestead database configurations.

Example configuration in .env might look like:

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

Summary

To conclude:

Double-check your .env file for correct database configurations.

Ensure MySQL server is running and accessible.

Verify that firewall settings do not block MySQL traffic.

Check for correct socket path in your MySQL configuration.

Look into Homestead specific settings if you are using it.

By carefully reviewing these points, you can debug and resolve the "SQLSTATE[HY000] [2002] Connection refused" error in your Laravel application while maintaining database access through Sequel Pro.