OpenSearch is an open-source search and analytics engine that is widely used for log analytics, real-time application monitoring, and search-based data applications. Follow the steps below to install OpenSearch on Ubuntu 24.04.

Step 1: Update the System

Before starting, ensure your system is up-to-date by running the following commands:

        sudo apt update
        sudo apt upgrade
    

Step 2: Install Java

OpenSearch requires Java, so you need to install OpenJDK. Run the following command to install OpenJDK 11:

        sudo apt install openjdk-11-jdk
    

Step 3: Download and Install OpenSearch

Add the OpenSearch repository and install the OpenSearch package:

        wget https://artifacts.opensearch.org/downloads/opensearch/opensearch-2.10.0-linux-x64.tar.gz
        tar -zxvf opensearch-2.10.0-linux-x64.tar.gz
        sudo mv opensearch-2.10.0 /usr/local/opensearch
    

Step 4: Configure OpenSearch

OpenSearch requires some configuration before starting. Navigate to the OpenSearch directory and edit the configuration file:

        cd /usr/local/opensearch/config
        sudo nano opensearch.yml
    

Make necessary changes such as setting network.host and discovery.seed_hosts.

Step 5: Start OpenSearch

Once configured, you can start OpenSearch by running the following command:

        sudo /usr/local/opensearch/bin/opensearch
    

Step 6: Verify OpenSearch Installation

To check if OpenSearch is running, navigate to http://localhost:9200 in your web browser. You should see a response from OpenSearch.

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