download and install via https://www.elastic.co/downloads/

yum install https://download.elasticsearch.org/elasticsearch/release/org/elasticsearch/distribution/rpm/elasticsearch/2.1.0/elasticsearch-2.1.0.rpm

make data and logs dir

mkdir -p /data/elastic/data
mkdir -p /data/elastic/logs
chown -R elasticsearch:elasticsearch /data/elastic/

edit config /etc/elasticsearch.yml

path.data: /data/elastic/data
path.logs: /data/elastic/logs
network.host: 127.0.0.1

edit start script /etc/init.d/elasticsearch

LOG_DIR="/data/elastic/logs"
DATA_DIR="/data/elastic/data"

install java jdk

yum install java-1.8.0-openjdk

start

systemctl enalbe elasticsearch
/etc/init.d/elasticsearch start

test

/etc/init.d/elasticsearch status
curl http://127.0.0.1:9200/