Why Am I Getting an ECONNREFUSED Error When Connecting to MySQL in Node.js?

Troubleshooting ECONNREFUSED Error in Node.js with MySQL

Problem Description

When attempting to establish a database connection using Node.js and the mysql module, the following error occurs:

Error: connect ECONNREFUSED

This error indicates that the connection to the database server has been refused.

Solution

To resolve this issue, consider the following steps:

1. Check MySQL Configuration: Ensure that the "skip-networking" option is commented out in the MySQL configuration file (my.cnf) and the MySQL server is running.
2. Set Socket Path (Optional): If the MySQL server is running on the same machine as the Node.js application, you can specify the socket path in the connection options:

<code class="javascript">var client = mysql.createClient({
  user: 'root',
  password: 'root',
  host: '127.0.0.1',
  port: '3306',
  _socket: '/var/run/mysqld/mysqld.sock',
});</code>

Replace the socket path with the appropriate value for your system.

Additional Notes

• If the error persists, you can try restarting the MySQL server or the Node.js application.
• If using a hosted MySQL instance, ensure that the appropriate firewall rules allow connections from your application.
• Refer to the mysql module documentation for additional connection options and troubleshooting tips.

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