npm install bunyan-mysql2

CREATE TABLE log(
	name varchar(200),
	hostname varchar(200),
	msg varchar(21845),
	pid integer,
	level integer,
	time datetime,
	v integer
);

var bunyan      = require('bunyan');
var MySqlStream = require('bunyan-mysql2');

var msqlStream = new MySqlStream({
    host     : 'localhost',
    user     : 'user',
    password : 'pass',
    database : 'database',
    port     : 3306
});

msqlStream.on('error', function (err) {
    console.log('MySQL Stream Error:', err.stack);
});

var log = bunyan.createLogger({
    name: "My Application",
    streams: [
        { stream: process.stdout },
        { stream: msqlStream }
    ],
    serializers: bunyan.stdSerializers
});

log.info('Oh My God, this works!!!');