uname -r

sudo yum -y update nss

sudo yum -y update curl

sudo rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

sudo rpm -Uvh https://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm

sudo yum --enablerepo=elrepo-kernel install kernel-lt -y

sudo vi /etc/grub.conf

sudo vi /etc/security/limits.conf

*	soft	nofile	65536
*	hard	nofile	131072
*	soft	nproc	2048
*	hard	nproc	4096

sudo vi /etc/security/limits.d/90-nproc.conf

*   soft    nproc   1024

*   soft    nproc   4096

sudo vi /etc/sysctl.conf

vm.max_map_count = 262144

sudo reboot

rz -E C:/elasticsearch-6.5.2.tar.gz

tar -zxvf elasticsearch-6.5.2.tar.gz -C ~/apps/

mv elasticsearch-6.5.2.tar.gz elasticsearch

vi ~/.bash_profile

export ELASTICSEARCH_HOME=/home/hadoop/apps/elasticsearch
export PATH=$PATH:$ELASTICSEARCH_HOME/bin

source ~/.bash_profile

vi $ELASTICSEARCH_HOME/config/elasticsearch.yml

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: bde-es
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: hadoop01
node.master: true
node.data: true
#
# Add custom attributes to the node:
#
node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /home/hadoop/data/elastic
#
# Path to log files:
#
path.logs: /home/hadoop/logs/elastic
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 0.0.0.0
#
# Set a custom port for HTTP:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
discovery.zen.ping.unicast.hosts: ["hadoop01", "hadoop02", "hadoop03"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes: 
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true

scp -r ~/.bash_profile hadoop02:~/.bash_profile
scp -r ~/.bash_profile hadoop03:~/.bash_profile
scp -r /home/hadoop/apps/elasticsearch hadoop02:/home/hadoop/apps/
scp -r /home/hadoop/apps/elasticsearch hadoop03:/home/hadoop/apps/

source ~/.bash_profile

node.name: hadoop02

node.name: hadoop03

mkdir -p /home/hadoop/data/elastic && mkdir -p /home/hadoop/logs/elastic

elasticsearch -d

curl -XGET http://localhost:9200

{
  "name" : "hadoop01",
  "cluster_name" : "bde-es",
  "cluster_uuid" : "-Em6aw25S4mIHu0SsN8hug",
  "version" : {
    "number" : "6.5.2",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "9434bed",
    "build_date" : "2018-11-29T23:58:20.891072Z",
    "build_snapshot" : false,
    "lucene_version" : "7.5.0",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}