Add instructions to deploy to production Linux

Author: debuger

Production.md

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+#How to deploy to production, on Linux
+
+Tested on Ubuntu 12.04
+
+##Pre-requisits: 
+
+* [node js 0.8 or later](http://nodejs.org/)
+* [npm 1.2.x](https://npmjs.org)
+* [rrdtool](http://oss.oetiker.ch/rrdtool/)
+* librrd-dev - for node_rrd, to build node bindings (on Ubuntu, apt-get install librrd-dev)
+* access to your collectd data directory
+
+##Get the files: 
+	$wget https://github.com/dzimine/collectd3/archive/master.zip
+	$unzip master.zip
+	$mv collectd3-master collectd3
+	$cd collectd3
+	$npm install --production
+
+Must be ok. If there are error, it will say 'not ok' on the last line.  
+
+One known problem may happen on npm install, fix pending…
+
+Temp fix: build node_rrd independently and copy it over under collectd3/node/node_modules
+
+	$git clone https://github.com/dzimine/node_rrd.git
+	$cd node_rrd
+	$npm install
+	$cd ..
+	$cp -r node_rrd collectd3/node/node_modules/rrd
+
+
+##Configure: 
+
+Edit collectd3/node/config/default.yml
+
+*  port: 9000 # web server port
+*  data-directory: sampledata # a path to collectd data root directory
+
+##Run:
+
+from collected directory - 
+
+	$cd node
+	$node server.js