Elasticsearch is a powerful search engine based on the Lucene library. It's widely used for full-text search and analysis. In this guide, we will walk you through the installation and configuration of Elasticsearch on Rocky Linux 8.

Step 1: Update Your System

Before installing Elasticsearch, it's important to update your system:

sudo dnf update -y

Step 2: Install Java

Elasticsearch requires Java. You can install OpenJDK with the following command:

sudo dnf install java-11-openjdk -y

Step 3: Add the Elasticsearch Repository

Add the Elasticsearch GPG key:

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

Then, create a new repo file:

echo "[elasticsearch-8.x]
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=1" | sudo tee /etc/yum.repos.d/elasticsearch.repo

Step 4: Install Elasticsearch

Now you can install Elasticsearch with the following command:

sudo dnf install elasticsearch -y

Step 5: Start and Enable Elasticsearch Service

Start the Elasticsearch service and enable it to start on boot:

sudo systemctl start elasticsearch
sudo systemctl enable elasticsearch

Step 6: Verify the Installation

To verify that Elasticsearch is running, use the following command:

curl -X GET "localhost:9200/"

You should see a JSON response with information about your Elasticsearch instance.

Step 7: Configure Elasticsearch (Optional)

You can configure Elasticsearch by editing the configuration file located at /etc/elasticsearch/elasticsearch.yml. Here, you can set cluster name, node name, network settings, and more.

Conclusion

You've successfully installed and configured Elasticsearch on Rocky Linux 8. You can now use it for your applications.

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