MySQL Connection Refused Error

Diagnosis

The error 'SQLSTATE[HY000] [2002] Connection refused' typically indicates that the MySQL server is not reachable. This can be due to network issues, incorrect server address, or the MySQL service not running.

Solution

1. Check MySQL Service: Ensure the MySQL service is running. Use sudo service mysql status on Linux or check the Services panel on Windows.
2. Verify Host and Port: Confirm that the host and port in your connection string are correct. The default MySQL port is 3306.
3. Firewall Settings: Ensure that your firewall allows traffic on the MySQL port.
4. Network Configuration: Check if there are any network issues or misconfigurations preventing access to the server.

Verification

After making changes, attempt to reconnect to the MySQL server. Use a MySQL client or command line to test the connection and confirm that the error is resolved.