CentOS 7

How To Install Elasticsearch on CentOS 7

To install Elasticsearch on CentOS 7, follow these steps.

Step 1 : Update your system:

sudo yum update

Step 2 : Install Java:

sudo yum install java-1.8.0-openjdk

Step 3 : Verify Java installation:

java -version

Step 4 : Import the Elasticsearch PGP key:

sudo rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch

Step 5 : Create a repository file for Elasticsearch:

sudo nano /etc/yum.repos.d/elasticsearch.repo

Add the following lines to the file:

[elasticsearch]
name=Elasticsearch repository for 8.x packages
baseurl=https://artifacts.elastic.co/packages/8.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=0
autorefresh=1
type=rpm-md

Step 6 : Install Elasticsearch:

sudo yum install --enablerepo=elasticsearch elasticsearch

Step 7 : Start Elasticsearch:

sudo systemctl start elasticsearch

Step 8 : Enable Elasticsearch to start on boot:

sudo systemctl enable elasticsearch

Step 9 : Edit the Elasticsearch configuration file:

sudo nano /etc/elasticsearch/elasticsearch.yml

Uncomment or add the following line to enable security:

xpack.security.enabled: true

Step 10 : Restart Elasticsearch:

sudo systemctl restart elasticsearch

Step 11 : Check Elasticsearch status:

sudo systemctl status elasticsearch

Step 12 : Reset the password for the 'elastic' user:

sudo /usr/share/elasticsearch/bin/elasticsearch-reset-password -u elastic

Step 13 : Verify Elasticsearch installation:

curl -k -u elastic:password https://localhost:9200

Congratulations! You have successfully installed Elasticsearch on CentOS 7.