How to install ElasticSearch as a service on CentOS

The following steps were tested for ElasticSearch 0.90.5 on CentOS 6.4.

	# install missing libraries (if any)
	cd ~
	sudo yum update
	yum install java-1.7.0-openjdk.x86_64
	yum install unzip
	yum install mc
	yum install wget
	yum install curl
	# get and unpack elasticsearch zip file
	cd /etc
	wget https://download.elasticsearch.org/elasticsearch/elasticsearch/elasticsearch-0.90.5.zip
	unzip elasticsearch-0.90.5.zip
	rm elasticsearch-0.90.5.zip
	mv elasticsearch-0.90.5 elasticsearch
	# install elasticsearch plugins
	cd elasticsearch/bin
	./plugin -install mobz/elasticsearch-head
	./plugin -install karmi/elasticsearch-paramedic
	./plugin -url http://bit.ly/GMYV9l -install river-jdbc
	cd /etc/elasticsearch/lib
	wget http://qiiip.org/mysql-connector-java-5.1.26-bin.jar
	# make elasticsearch runnable as a service
	cd ~
	curl -L http://github.com/elasticsearch/elasticsearch-servicewrapper/tarball/master | tar -xz
	mv *servicewrapper*/service /etc/elasticsearch/bin/
	rm -Rf *servicewrapper*
	sudo /etc/elasticsearch/bin/service/elasticsearch install
	# set elasticsearch to run on boot
	sudo /sbin/chkconfig elasticsearch on
	sudo /sbin/chkconfig --list
	# open port 9200 (for http) and 9300 (for tcp)
	sudo iptables -L -n
	iptables -A INPUT -p tcp -m tcp --dport 9200 -j ACCEPT
	iptables -A INPUT -p tcp -m tcp --dport 9300 -j ACCEPT
	service iptables save
	# set min max memory variables
	export ES_MIN_MEM=5G
	export ES_MAX_MEM=5G
	# restart server
	service elasticsearch restart
	tail -f /etc/elasticsearch/logs/elasticsearch.log

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