Connect Lambda to RDS MySql

lambda_rds_mysql.js

  const mysql = require('mysql');

  var config = require('./config.json');

  exports.handler = function(event, context, callback) {

    var pool  = mysql.createPool({
        host     : config.dbhost,
        user     : config.dbuser,
        password : config.dbpassword,
        database : config.dbname,
        queueLimit : 0, // unlimited queueing
        connectionLimit : 10,
        multipleStatements : true,
        connectTimeout  : 60 * 60 * 1000,
        acquireTimeout  : 60 * 60 * 1000,
        timeout         : 60 * 60 * 1000,
      });

    // console.log(pool)

    pool.getConnection(function(err, connection) {

      context.callbackWaitsForEmptyEventLoop = false;

      if (err) { console.log('===============>', err) }
      // Use the connection
      connection.query('SELECT * from Table', function (error, results, fields) {
        // And done with the connection.
        connection.release();
        // Handle error after the release.
        if (error) throw error;
        else console.log(results);
      });  

    });
  }

Config.json:
{
"dbhost" : "",
"dbname" : "",
"dbuser" :"",
"dbpassword" :""
}