Connection refused when connecting to MySql using NodeJS mysql2 - mysql

Question

I am running a NodeJS app hosted on a (linux) dedicated Plesk server, under a subdomain.
Trying to connect to a MariaDB mysql server.
The NodeJS code:
const mysql = require('mysql2');
const con = mysql.createConnection({
host: "localhost",
user: "username",
password: "password",
database: "myDatabase"
});
global.MYSQL_CONNECTION = con;
function Connect(onSuccess){
con.connect(function(err) {
if (err) throw err;
console.log("MySQL connected successfully.");
onSuccess(con);
});
}
When I run this I get the following error:
Error: connect ECONNREFUSED ::1:3306
at TCPConnectWrap.afterConnect [as oncomplete] (node:net:1195:16) {
errno: -111,
code: 'ECONNREFUSED',
syscall: 'connect',
address: '::1',
port: 3306,
fatal: true
}
However, when I run mysql -hlocalhost -uusername -ppassword on my bash terminal it connects fine, meaning the credentials are correct and the user has permissions.
What could be causing this?

Answer 1

Figured out the solution to this.
All I had to do was to change the host to 127.0.0.1 :
const con = mysql.createConnection({
host: "127.0.0.1",
user: "username",
password: "password",
database: "myDatabase"
});
I am unsure of the reason. It most probably has something to do with the fact that this runs on a subdomain. Would be great if anyone could specify the reason.