Custom Nagios Notifications, now with Jade

Recently, I posted about using coffee-script and node-mailer to send custom Nagios notification emails.  While it is a great way of extending the capabilities of Nagios Alerts by allowing any arbitrary hook into other coffee / javascript apis (such as node-mailer), it is also capable of creating pretty HTML e-mails with the help of the Jade template engine.

Since I've already created the Nagios Command and bound it to my contact information, all I need to do is install jade into the project folder's node_modules:

$ npm install jade

We then need to create our templates.  Since I wanted to use a layout, I created a jade sub-folder in my projects folder.

Here is the layout (./jade/layout.jade):

	doctype 5
	html
	head
	link(rel='stylesheet', href='http://domain.com/components/bootstrap/docs/assets/css/bootstrap.css')
	link(rel='stylesheet', href='http://domain.com/components/bootstrap/docs/assets/css/bootstrap-responsive.css')
	link(rel='stylesheet', href='http://domain.com/components/font-awesome/css/font-awesome.min.css')
	script(type="text/javascript", src="http://domain.com/components/jquery/jquery.min.js")
	script(type="text/javascript", src="http://domain.com/components/bootstrap/docs/assets/js/bootstrap.js")
	body
	block content

view raw layout.jade hosted with ❤ by GitHub

Here is a neat header bar that I'm using(./jade/nav-bar-email.jade):

	.container-fluid
	.navbar
	.navbar-inner
	a.brand(href="domain.com/") Company
	ul.nav
	li
	a(href="domain.com/") Home
	li
	a(href="domain.com/projects") Projects
	li
	a(href="domain.com/about") About
	ul.nav.pull-right
	li
	a(href="domain.com/docs") Docs

view raw nav-bar-email.jade hosted with ❤ by GitHub

Here is the alert e-mail(./jade/nagiosAlert.jade):

	extends layout.jade
	block content
	include nav-bar-email
	.container-fluid
	.row-fluid
	.span12
	.well
	i.icon-warning-sign.icon-4x.pull-right
	b
	p.lead Nagios Alert for #{hostname}
	hr
	.container-fluid
	.row-fluid
	.span3
	label.label Hostname:
	.span9
	span #{hostname}
	if service
	.row-fluid
	.span3
	label.label service:
	.span9
	span #{service}
	.row-fluid
	.span3
	label.label ip:
	.span9
	span #{ip}
	.row-fluid
	.span3
	label.label notify:
	.span9
	span #{notify_type}
	.row-fluid
	.span3
	label.label status:
	.span9
	span #{status}
	.row-fluid
	.span3
	label.label date:
	.span9
	span #{date}
	.row-fluid
	.span3
	label.label output:
	.span9
	span #{output}

view raw nagiosAlert.jade hosted with ❤ by GitHub

Here is what my notify-service.coffee script looks like(/opt/bin/notify-service.coffee):

	#!/usr/bin/env coffee
	#
	# incoming argv is order sensitive
	#
	# [0] - coffee
	# [1] - /opt/bin/notify-service.coffee
	# [2] - hostname
	# [3] - service
	# [4] - IP address
	# [5] - notification type [ PROBLEM, RECOVERY, OK ]
	# [6] - status [ OK, WARNING, CRITICAL ]
	# [7] - long date time
	# [8] - service output
	require 'coffee-script'
	nodemailer = require 'nodemailer'
	jade = require 'jade'
	argvObject =
	hostname: process.argv[2]
	service: process.argv[3]
	ip: process.argv[4]
	notify_type: process.argv[5]
	status: process.argv[6]
	date: process.argv[7]
	output: process.argv[8]
	smtpTransport = nodemailer.createTransport "SMTP"
	text = "Nagios requires your attention.\n
	\n
	Hostname:\t\t" + argvObject.hostname + "\n
	service:\t\t" + argvObject.service + "\n
	ip:\t\t" + argvObject.ip + "\n
	notify:\t\t" + argvObject.notify_type + "\n
	status:\t\t" + argvObject.status + "\n
	date:\t\t" + argvObject.date + "\n
	output:\t\t" + argvObject.output + "\n
	"
	jade.renderFile '/opt/bin/jade/nagiosAlert.jade', argvObject, (err, html)->
	if err
	console.log err
	mailOptions =
	from: "Nagios <admin@domain.com>"
	to: "admin@domain.com"
	subject: argvObject.hostname + "'s " + argvObject.service +
	" IS " + argvObject.status
	text: text
	html: html
	smtpTransport.sendMail mailOptions, (err, res) ->
	if err
	console.log err
	process.exit()

view raw notify-service.coffee hosted with ❤ by GitHub

The final result is a pretty looking E-Mail. I'm viewing this with Mail.app in OS X.  Ive blanked out a few bits.  Just imagine there is Company Text to the left of home and a link between home and projects in the nav-bar