Installing ElasticSearch on Azure - Ubuntu 14.04

wget -qO - https://packages.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -  
echo "deb http://packages.elastic.co/elasticsearch/1.6/debian stable main" | sudo tee -a /etc/apt/sources.list.d/elasticsearch-1.6.list  
sudo apt-get update && sudo apt-get install elasticsearch  
sudo update-rc.d elasticsearch defaults 95 10  
sudo vim /etc/init.d/elasticsearch  
ES_HEAP_SIZE=1g #50% of total RAM  
sudo service elasticsearch start