error connecting/querying mysql node.js and postreSQL - mysql

Question

the mysql/node.js appears to connect then i "think" there may be a problem with the query event logic. Here's the code and error. I also have a separate/similar problem with postreSQL. I install npmed both in the same directory.
ryan#\Ryan:~/Desktop/node/datastores$ node MySQL
connection::connected
/home/ryan/Desktop/node/datastores/MySQL.js:20
if (err) throw err;
^
Error: connect ECONNREFUSED
at errnoException (net.js:901:11)
at Object.afterConnect [as oncomplete] (net.js:892:19)
--------------------
at Protocol._enqueue (/home/ryan/Desktop/node/node_modules/mysql/lib/protocol/Protocol.js:135:48)
at Protocol.handshake (/home/ryan/Desktop/node/node_modules/mysql/lib/protocol/Protocol.js:52:41)
at Connection.connect (/home/ryan/Desktop/node/node_modules/mysql/lib/Connection.js:123:18)
at Object.<anonymous> (/home/ryan/Desktop/node/datastores/MySQL.js:15:12)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
this is my server/mysql logic
var mysql = require('mysql');
var connectionConfig = {
host: 'localhost',
user: 'root',
password: '',
database: 'sakila'
};
var connection = mysql.createConnection( connectionConfig);
connection.connect(function(err) {
console.log('connection::connected');
});
connection.query('SELECT * FROM actor', function(err, rows, fields) {
if (err) throw err;
rows.forEach(function(row) {
console.log(row.first_name, row.last_name);
});
});
var actor = { first_name: 'Wil', last_name: 'Wheaton' };
connection.query('INSERT INTO actor SET ?', actor, function(err, results) {
if (err) throw err;
console.log(results);
});
connection.end(function(err) {
console.log('connection::end');
});
heres postre logic
var pg = require('pg');
var connectionString = 'postgres://ryan#localhost/postgres';
var client = new pg.Client(connectionString);
client.connect(function(err) {
if (err) throw err;
client.query('SELECT NOW() AS "THE TIME"', function( err, result ) {
if (err) throw err;
console.log(result.rows[0]);
client.end();
});
});
heres error
ryan#\Ryan:~/Desktop/node/datastores$ node postreSQL
/home/ryan/Desktop/node/datastores/postreSQL.js:8
if (err) throw err;
^
Error: connect ECONNREFUSED
at errnoException (net.js:901:11)
at Object.afterConnect [as oncomplete] (net.js:892:19)

Answer 1

Your password seems to be empty in both connections.
You need to get the connection details for the database from your devOps / SysAdmin / whoever created it.
Ask for the hostname, port, user and password, and schema name; then put those in your init object:
// MySQL:
var connectionConfig = {
host: "", // Hostname + ":" + port (no need for :port if 3360)
user: "", // User
password: "", // Password
database: "" // Schema
};
// PostgreSQL:
var connectionString = 'postgres://user:password#hostname:port';