node_mysql.js

var mysql = require('mysql')
var connection = mysql.createConnection({
	host: "localhost",
	user: process.env.USER_MYSQL,
	password: process.env.PASS_MYSQL,
	database: "test"
})	

connection.connect()

connection.query('SELECT * from contacts',function(err,rows,fields){
	if (err) {
		console.log("Error!")
	}
	else{
		console.log(rows)
	}
})