anchor.diff:  [[elasticsearch-installation]]
   === Elasticsearch installation
   
  -http://www.elasticsearch.org/[Elasticsearch] is a distributed real-time
  +https://www.elastic.co/products/elasticsearch[Elasticsearch] is a distributed real-time
   storage, search and analytics engine. It can be used for many purposes, but one
   context where it excels is indexing streams of semi-structured data, like logs
   or decoded network packets.
  
positive.code: ["source","sh",subs="attributes,callouts"]
  ----------------------------------------------------------------------
  sudo yum install java-1.7.0-openjdk
  curl -L -O https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-{ES-version}.noarch.rpm
  sudo rpm -i elasticsearch-{ES-version}.noarch.rpm
  sudo service elasticsearch start
  ----------------------------------------------------------------------
  
negative.code: ["source","sh",subs="attributes,callouts"]
  ----------------------------------------------------------------------
  sudo apt-get install openjdk-7-jre
  curl -L -O https://download.elastic.co/elasticsearch/elasticsearch/elasticsearch-{ES-version}.deb
  sudo dpkg -i elasticsearch-{ES-version}.deb
  sudo /etc/init.d/elasticsearch start
  ----------------------------------------------------------------------
  