Install Elasticsearch

install_elasticsearch.sh

# Install on ubuntu trusty tahr 14.04
# I do this with root user, but if you sudo access with your user it will work too!
sudo su
# Update apt-get 
apt-get update
# Install java jdk 7 or java jdk 8 or oracle jdk
apt-get install openjdk-7-jre-headless
# Make sure java is installed
java -version
# This should output: java version "1.7.XX"

# Navigate to the installation folder you want (for me /opt/)
cd /opt/
# Download elasticsearch and untar
wget -qO- https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-1.4.2.tar.gz | tar xvz

# In /opt/elasticsearch-1.4.2.tar.gz/config/elasticsearch.yml
# Uncomment and change those lines to the following: 
# network.host: localhost
# cluster.name: YOUR-CLUSTER-NAME

# Start elasticsearch in the background (reference here for those who wants a service http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/setup-service.html)
/opt/elasticsearch-1.4.2/bin/elasticsearch -d
# Check if the server is running
curl -XGET http://localhost:9200
# Sample output: 
#{
#  "status" : 200,
#  "name" : "Nicholas Scratch",
#  "cluster_name" : "elasticsearch",
#  "version" : {
#    "number" : "1.4.2",
#    "build_hash" : "927caff6f05403e936c20bf4529f144f0c89fd8c",
#    "build_timestamp" : "2014-12-16T14:11:12Z",
#    "build_snapshot" : false,
#    "lucene_version" : "4.10.2"
#  },
#  "tagline" : "You Know, for Search"
#}

# DONE!