It is assumed that downloaded and unpacked elasticsearch. If not please follow the tutorial at elastic.co: Install Elasticsearch with .zip or .tar.gz

For this tutorial we assume the following file locations:

elasticsearch      /usr/local/elasticsearch
data folder     /u01/data/elasticsearch
log folder      /u01/data/elasticsearch/log

We will be using an elasticsearch user who must have ownership of all previous listed folders.

groupadd elasticsearch && useradd -r -g elasticsearch -s /bin/false elasticsearch
chown -R elasticsearch:elasticsearch <FOLDER>

Modified elasticsearch.yml (adjust the values to your needs):

# ======================== 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: culbor-cluster
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: culbor-node-1
#
# 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: /u01/data/elasticsearch/
#
# Path to log files:
#
path.logs: /u01/data/elasticsearch/log
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# 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: 192.168.0.1
#
# 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: ["host1", "host2"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes: 3
#
# 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

Systemd service script at /etc/systemd/system/elasticsearch.service:

[Unit]
Description=Elasticsearch instance
Wants=network-online.target
After=network-online.target

[Service]
User=elasticsearch
Group=elasticsearch

ExecStartPre=/usr/local/elasticsearch/bin/elasticsearch-systemd-pre-exec

ExecStart=/usr/local/elasticsearch/bin/elasticsearch \
                        -p /u01/data/elasticsearch/log/elasticsearch.pid

StandardOutput=journal
StandardError=inherit

# Disable timeout logic and wait until process is stopped
TimeoutStopSec=0

# SIGTERM signal is used to stop the Java process
KillSignal=SIGTERM

# Java process is never killed
SendSIGKILL=no

# When a JVM receives a SIGTERM signal it exits with code 143
SuccessExitStatus=143

[Install]
WantedBy=multi-user.target

Add the service to autostart and start the service:

systemctl enable elasticsearch.service
systemctl start elasticsearch.service &