Installer to add the elasticsearch gpgkey, repository, and rpm package on el6 & el7.

install-elastic.sh

#!/bin/bash
#
# This file will install elasticsearch gpgkey, repository, and rpm package on el6 & el7
# The elastic repositories do not work with older rpm based distributions that still use RPM v3, like CentOS5.
#
set -e

function install_rpm {
	echo "* Installing elastic public key"
	# Could check first (rpm -qi gpg-pubkey-d88e42b4)
	rpm --quiet --import https://artifacts.elastic.co/GPG-KEY-elasticsearch

	echo "* Installing elastic repository"
	cat <<EOF > /etc/yum.repos.d/elasticsearch.repo
[elasticsearch-5.x]
name=Elasticsearch repository for 5.x packages
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
EOF
	echo "* Installing elasticsearch"
	yum -q -y install elasticsearch
	#echo "* Installing kibana"
	#yum -q -y install kibana
}

function unsupported {
	echo 'Unsupported operating system.'
	exit 1
}

#function start_onboot {
	#SysV init (check with ps -p 1):
	#chkconfig --add elasticsearch
	#Otherwise if using systemd:
	#sudo /bin/systemctl daemon-reload
	#sudo /bin/systemctl enable elasticsearch.service
#}

if [ $(id -u) != 0 ]; then
	echo "Installer must be run as root (or with sudo)."
	exit 1
fi

echo "* Detecting operating system"

ARCH=$(uname -m)
if [[ ! $ARCH = *86 ]] && [ ! $ARCH = "x86_64" ]; then
	unsupported
fi

if [ -f /etc/system-release-cpe ]; then
	DISTRO=$(cat /etc/system-release-cpe | cut -d':' -f3)
	VERSION=$(cat /etc/system-release-cpe | cut -d':' -f5 | cut -d'.' -f1 | sed 's/[^0-9]*//g')

	case "$DISTRO" in

		"oracle" | "centos" | "redhat")
			if [ $VERSION -ge 6 ]; then
				install_rpm
			else
				unsupported
			fi
			;;

		"amazon")
			install_rpm
			;;

		*)
			unsupported
			;;

	esac

else
	unsupported
fi