'syslog.h' bindings with a revised console module
npm install rconsoleC bindings to syslog and a fast, more feature-rich console module.
$ npm install rconsole
By default your syslogs will land in /var/log/messages. Add a new facility where your syslog configuration is located to change this. (see notes)
``js
require('rconsole')
console.set({ facility: 'local0', title: 'basic' })
console.log('hello world')
`
Here is an example webserver that pipes express.logger to the stream for notice severity logs. It includes development and production configuration. Create a new file called app.js with the following code:
`js
require('rconsole')
var express = require('express')
, app = express.createServer()
app.use(express.favicon())
app.configure(function () {
console.set({
facility: 'local0'
, title: 'express'
, syslogHashTags: true
})
})
app.configure('production', function () {
// any options passed to console.set in a subsequent call
// will override the previous values and reconnect to syslog
console.set({highestLevel: 'notice', stderr: false})
})
// pass in the stream to console.notice
app.use(express.logger({ stream: console.stream('notice') }))
app.get('/', function (req, res, next) {
res.end('hello world')
})
app.listen(3000)
console.notice('Server running on port 3000')
`
Start the server
$ node app.js
And then visit http://localhost:3000/ and express.logger will be streaming to console.notice in your terminal as well as syslog.
To disable the stderr stream, start the app with NODE_ENV=production and then tail -f /var/log/path/to/logFile to monitor the logs
$ NODE_ENV=production node app.js
`js
require('rconsole')
console.set({
facility: 'local0' // default: user
, title: 'web-01' // default: node -- can also be set with process.title
, highestLevel: 'debug' // [emerg, alert, crit, err, warning, notice, info, debug]
, stdout: false // default: false
, stderr: true // default: true
, syslog: true // default: true
, syslogHashTags: false // default: false
, showTime: true // default: true
, showLine: true // default: true
, showFile: true // default: true
, showTags: true // default: true
})
console.emerg('level 0')
console.alert('level 1')
console.crit('level 2')
console.error('level 3')
console.warn('level 4')
console.notice('level 5')
console.info('level 6')
console.log('level 6')
console.debug('level 7', { hello: 'world' })
console.trace('level 7')
console.dir({ 'level 7': { 'deep': { 'level': { 'inspect': true } } } }, true, 5)
console.time('level 7')
console.timeEnd('level 7')
`
change the facility (syslog, default: user)
* title change the title of the process (syslog, default: node)
* showLine automatically add line numbers (default: true)
* showFile automatically add file names (default: true)
* showTime automatically add timestamps (default: true)
* syslogHashTags automatically append hashtags for log analyzation (syslog, default: false)
* highestLevel limit the display based on severity (default: debug)
* showTags add tags with colors (stderr/stdout, default: true)
* stderr use stderr (default: true)
* stdout use stdout (default: false)
* syslog use syslog bindings (default: true)$3
* console.stream(level)
* console.emerg
* console.alert
* console.crit
* console.error
* console.warn
* console.notice
* console.info, console.log
* console.debug
* console.trace
* console.dir
* console.time
* console.timeEndNotes
The default configuration is suited for development, however you should immediately set up configuration for syslog and choose a facility (local0-local7) that is not already in use on your system.
By default your syslogs will land in
/var/log/messages with facility user and tag node. Configure a new facility in /etc/rsyslog.conf, /etc/syslog-ng/syslog-ng.conf, /etc/syslog-ng.conf or wherever your syslog configuration is located.$3
For rsyslog your configuration might look something like this:
`
local0.notice /var/log/node/production.log
local0.info /var/log/node/staging.log
local0.debug /var/log/node/debug.log
$3
provides display features and is a drop in replacement for the native console module. console will come with a number of options that you can console.set (see the api)If you completely disable stderr/stdout you can just tail your syslogs.
$3
The aim of this module is to provide an interface to
syslog.h` based on the syslog RFC (http://tools.ietf.org/html/rfc5424). Any configuration that can be done with rsyslog or syslog-ng is not provided in this module; such as log reception, forwaring, filtering, etc. The archival destinations are not visible to or configurable by the app, and instead are completely managed by the execution environment.(The MIT License)
Copyright (c) 2012 Thomas Blobaum
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