Install and Configure Elasticsearch in Centos 7

Download and Extract Elasticsearch

https://www.elastic.co/downloads/elasticsearch

Run and Verify Elasticsearch 7.x

$ sudo yum install wget -y
$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-7.15.0-linux-x86_64.tar.gz
$ tar -zxvf elasticsearch-7.15.0-linux-x86_64.tar.gz
$ cd elasticsearch-7.15.0
$ ./bin/elasticsearch -d -p pid
$ ps -eaf | grep elas

Run and Verify Elasticsearch 8.x

Terminal#1
$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-8.9.1-linux-x86_64.tar.gz
$ tar -zxvf elasticsearch-8.9.1-linux-x86_64.tar.gz
$ cd elasticsearch-8.9.1
$ ls config/
$ cd bin
$ ./elasticsearch

Terminal#2
$ curl --cacert /home/ubuntu/elasticsearch-8.9.1/config/certs/http_ca.crt -u elastic https://localhost:9200
Enter host password for user 'elastic':
{
  "name" : "ip-172-31-58-60",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "dvbfb_NLS6qy1iuhc4yvKA",
  "version" : {
    "number" : "8.9.1",
    "build_flavor" : "default",
    "build_type" : "tar",
    "build_hash" : "a813d015ef1826148d9d389bd1c0d781c6e349f0",
    "build_date" : "2023-08-10T05:02:32.517455352Z",
    "build_snapshot" : false,
    "lucene_version" : "9.7.0",
    "minimum_wire_compatibility_version" : "7.17.0",
    "minimum_index_compatibility_version" : "7.0.0"
  },
  "tagline" : "You Know, for Search"
}

Images for Elasticsearch Install Validation

Install Elasticsearch with Docker

Pulling the image
Obtaining Elasticsearch for Docker is as simple as issuing a docker pull command against the Elastic Docker registry.
$ docker pull docker.elastic.co/elasticsearch/elasticsearch:7.15.0

Starting a single node cluster with Docker
To start a single-node Elasticsearch cluster for development or testing, specify single-node discovery to bypass the bootstrap checks:
$ docker run -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" docker.elastic.co/elasticsearch/elasticsearch:7.15.0

Elasticsearch Configuration file

• Location

	# ======================== 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: my-application
	#
	# ------------------------------------ Node ------------------------------------
	#
	# Use a descriptive name for the node:
	#
	#node.name: 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: /path/to/data
	#
	# Path to log files:
	#
	#path.logs: /path/to/logs
	#
	# ----------------------------------- 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 -----------------------------------
	#
	# By default Elasticsearch is only accessible on localhost. Set a different
	# address here to expose this node on the network:
	#
	#network.host: 192.168.0.1
	#
	# By default Elasticsearch listens for HTTP traffic on the first free port it
	# finds starting at 9200. Set a specific HTTP port here:
	#
	#http.port: 9200
	#
	# For more information, consult the network module documentation.
	#
	# --------------------------------- Discovery ----------------------------------
	#
	# Pass an initial list of hosts to perform discovery when this node is started:
	# The default list of hosts is ["127.0.0.1", "[::1]"]
	#
	#discovery.seed_hosts: ["host1", "host2"]
	#
	# Bootstrap the cluster using an initial set of master-eligible nodes:
	#
	#cluster.initial_master_nodes: ["node-1", "node-2"]
	#
	# For more information, consult the discovery and cluster formation module documentation.
	#
	# ---------------------------------- Various -----------------------------------
	#
	# Require explicit names when deleting indices:
	#
	#action.destructive_requires_name: true

view raw elasticsearch.yml hosted with by GitHub

Rajesh Kumar

I’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I am working at Cotocus. I blog tech insights at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at I reviewed , and SEO strategies at Wizbrand. 

Please find my social handles as below;

Rajesh Kumar Personal Website
Rajesh Kumar at YOUTUBE
Rajesh Kumar at INSTAGRAM
Rajesh Kumar at X
Rajesh Kumar at FACEBOOK
Rajesh Kumar at LINKEDIN
Rajesh Kumar at PINTEREST
Rajesh Kumar at QUORA
Rajesh Kumar at WIZBRAND