Log from JS to Fluentd/Logstash

log.js

var log4js = require('log4js');

// 	Use as host
// - 192.168.99.100 as host for local Docker or the IP provided by `docker-machine ip default`
// var host = '192.168.99.100';
var host = 'localhost';

console.log("Using central log host " + host);

console.log("Configure log4js ...");

function createLogstashAppender(host) {
	// configure LogStash appender
	return require('log4js-logstash-client').configure({
		host: host,
		port: 12345,
		extend: {
			appName: 'log-js',
			env: 'DEV'
		}
	});
}

function createFluentdAppender(host) {
	// configure fluentd appender
	var appender = require('fluent-logger').support.log4jsAppender('appjs', {
		host: host,
		port: 24224,
		timeout: 3.0,
		levelTag: false
	});
	appender.on('error', function(err) {
		// Handle err object
		console.log(err);
	});
}

// log4js.addAppender(createFluentdAppender(host));
log4js.addAppender(createLogstashAppender(host));

console.log("Log messages");
var logger = log4js.getLogger('com.my.category.JsSample');
logger.info('sample js log');
logger.fatal('sample js error');

setTimeout(function() { process.exit();}, 1000);

package.json

{
  "name": "log-js",
  "main": "log.js",
  "engines": {
    "node": ">= 0.8.0"
  },
  "dependencies": {
    "log4js": "latest",
		"fluent-logger": "latest",
		"log4js-logstash-client": "latest"
  },
	"scripts": {
		"run": "node log.js"
	}
}