yum install elasticsearch-8.9.1-x86_64.rpm

systemctl daemon-reload
systemctl enable elasticsearch.service

# ======================== 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](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: /var/lib/elasticsearch
#
# Path to log files:
#
path.logs: /var/log/elasticsearch
#
# 
---
----- 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: 0.0.0.0
#
# 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 
---
-----
#
# Allow wildcard deletion of indices:
#
#action.destructive_requires_name: false

#
----- BEGIN SECURITY AUTO CONFIGURATION 
-----
#
# The following settings, TLS certificates, and keys have been automatically      
# generated to configure Elasticsearch security features on 31-08-2023 09:48:01
#
# 
---
---
---
-----

# Enable security features
xpack.security.enabled: false
xpack.ml.enabled: false

xpack.security.enrollment.enabled: true

# Enable encryption for HTTP API client connections, such as Kibana, Logstash, and Agents
xpack.security.http.ssl:
  enabled: false
  keystore.path: certs/http.p12

# Enable encryption and mutual authentication between cluster nodes
xpack.security.transport.ssl:
  enabled: false
  verification_mode: certificate
  keystore.path: certs/transport.p12
  truststore.path: certs/transport.p12
# Create a new cluster with the current node only
# Additional nodes can still join the cluster later
cluster.initial_master_nodes: [ "localhost.localdomain" ]

# Allow HTTP API connections from anywhere
# Connections are encrypted and require user authentication
http.host: 0.0.0.0

# Allow other nodes to join the cluster from anywhere
# Connections are encrypted and mutually authenticated
#transport.host: 0.0.0.0

#
----- END SECURITY AUTO CONFIGURATION 
----

systemctl start elasticsearch

systemctl status elasticsearch

[root@localhost elasticsearch]# curl -X GET "http://localhost:9200/"
{
  "name" : "node-1",
  "cluster_name" : "my-application",
  "cluster_uuid" : "XAGRLef2SayyXzuNHPgX2Q",
  "version" : {
    "number" : "8.9.1",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "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"
}