Understanding Node.js ECONNREFUSED Error with MySQL

When attempting to establish a connection to a MySQL database using Node.js, developers may encounter the error message "connect ECONNREFUSED." This indicates a connection refusal on the server side, effectively preventing the client application from accessing the database.

The code snippet provided in the query includes the following configuration:

var client = mysql.createClient({
  user: 'root',
  password: 'root',
});

However, it lacks explicit specification of the database host and port. Without these details, the default host (localhost) and port (3306) are assumed.

To resolve the ECONNREFUSED error, consider the following solutions:

Solution 1: Disable Skip Networking

• Open your MySQL configuration file (mysql.conf) and locate the "skip-networking" parameter.
• Comment out the line by adding a '#' character at the beginning.
• Save the changes and restart the MySQL service.

Solution 2: Specify Socket Path

• If connecting using the MySQL socket, configure the client like this:

  var client = mysql.createClient({
  user: uuuu,
  password: pppp,
  host: '127.0.0.1',
  port: '3306',
  _socket: '/var/run/mysqld/mysqld.sock',
  });

• Ensure the socket file exists and has the necessary permissions.