Bootstrap Elasticsearch Master Node on Ubuntu 16.04

elasticsearch-bootstrap-master-node.sh

#!/bin/bash
apt update && apt upgrade -y
apt install software-properties-common python-software-properties apt-transport-https -y
wget -qO - https://artifacts.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -
echo "deb https://artifacts.elastic.co/packages/5.x/apt stable main" | sudo tee -a /etc/apt/sources.list.d/elastic-5.x.list
add-apt-repository ppa:webupd8team/java -y
apt update
echo "oracle-java8-installer shared/accepted-oracle-license-v1-1 select true" | sudo debconf-set-selections
apt install oracle-java8-installer -y
apt install nginx apache2-utils elasticsearch -y

cat > /etc/elasticsearch/elasticsearch.yml << EOF
cluster.name: ruan-es-cluster
node.name: \${HOSTNAME}
node.master: true
node.data: false
path.logs: /var/log/elasticsearch
bootstrap.memory_lock: true
network.host: 0.0.0.0
discovery.zen.minimum_master_nodes: 2 
discovery.zen.ping_timeout: 10s
discovery.zen.fd.ping_retries: 3 
discovery.zen.fd.ping_interval: 3s 
discovery.zen.fd.ping_timeout: 30s
discovery.zen.ping.unicast.hosts: ["es-master-1", "es-master-2", "es-master-3"]
EOF

cat > /etc/default/elasticsearch << EOF
ES_STARTUP_SLEEP_TIME=5
MAX_OPEN_FILES=65536
MAX_LOCKED_MEMORY=unlimited
EOF

sed -i 's/#LimitMEMLOCK=infinity/LimitMEMLOCK=infinity/'g /usr/lib/systemd/system/elasticsearch.service

cat > /etc/security/limits.conf << EOF
elasticsearch soft nofile 65536
elasticsearch hard nofile 65536
elasticsearch soft memlock unlimited
elasticsearch hard memlock unlimited
EOF

systemctl daemon-reload
systemctl enable elasticsearch
reboot