OpenSearch is an open-source search and analytics suite derived from Elasticsearch. It is designed to help you index, search, and analyze data at scale. In this guide, we will walk you through how to install OpenSearch on Debian 12. Hosting OpenSearch on a WindowsVPS ensures optimal performance, scalability, and control using the dedicated resources of a VPS server.

Step 1: Update Your VPS Server

Before installing OpenSearch, ensure your VPS server is up to date. Run the following commands to update your Debian system:

sudo apt update && sudo apt upgrade -y

Using a WindowsVPS provides dedicated resources, allowing OpenSearch to handle large volumes of data and search queries more efficiently.

Step 2: Install Java

OpenSearch requires Java to run. You can install OpenJDK 11, which is recommended for OpenSearch, using the following command:

sudo apt install openjdk-11-jdk -y

Verify the Java installation with:

java -version

Step 3: Download and Install OpenSearch

Now, download the latest version of OpenSearch. Navigate to your desired directory (for example, /usr/local) and download OpenSearch:

cd /usr/local
sudo wget https://artifacts.opensearch.org/releases/bundle/opensearch/2.5.0/opensearch-2.5.0-linux-x64.tar.gz

Once the download is complete, extract the tarball:

sudo tar -xzf opensearch-2.5.0-linux-x64.tar.gz

Move the extracted folder to a more convenient location:

sudo mv opensearch-2.5.0 opensearch

Step 4: Configure OpenSearch

OpenSearch requires some basic configuration before starting. Navigate to the configuration directory:

cd /usr/local/opensearch/config

Edit the opensearch.yml configuration file:

sudo nano opensearch.yml

Add or modify the following settings (replace your-server-ip with your actual server IP address):

cluster.name: my-cluster
network.host: 0.0.0.0
node.name: node-1
discovery.seed_hosts: ["127.0.0.1", "your-server-ip"]
cluster.initial_master_nodes: ["node-1"]

Save and close the file.

Step 5: Create a Systemd Service for OpenSearch

To manage OpenSearch as a service, create a systemd service file:

sudo nano /etc/systemd/system/opensearch.service

Add the following content to the file:

[Unit]
Description=OpenSearch Service
Documentation=https://opensearch.org/
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
ExecStart=/usr/local/opensearch/bin/opensearch
Restart=on-failure
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

Save the file, then reload systemd and start the OpenSearch service:

sudo systemctl daemon-reload
sudo systemctl start opensearch
sudo systemctl enable opensearch

Step 6: Configure Firewall for OpenSearch

If you have a firewall enabled, you need to allow traffic on OpenSearch’s default port (9200). Run the following commands to open the necessary port:

sudo ufw allow 9200/tcp
sudo ufw reload

Step 7: Verify OpenSearch Installation

To verify that OpenSearch is running, you can use the following command to check the service status:

sudo systemctl status opensearch

Additionally, you can verify that OpenSearch is accessible by sending a request using curl:

curl http://localhost:9200

You should see output confirming that OpenSearch is running and ready to process requests.

Step 8: Secure OpenSearch with Basic Authentication (Optional)

To secure OpenSearch, you can configure basic authentication. Navigate to the opensearch-plugins directory and run the following command to generate passwords for the built-in users:

sudo /usr/local/opensearch/bin/opensearch-securityadmin.sh

Follow the prompts to configure security settings, including enabling SSL and adding basic authentication to protect your OpenSearch cluster.

Step 9: Optimize Your VPS Server for OpenSearch

Running OpenSearch on a WindowsVPS allows you to take advantage of dedicated resources such as CPU, memory, and storage, which are crucial for handling large datasets and multiple queries. A VPS server provides scalability, enabling you to increase resources as your search and analytics requirements grow.

Conclusion

OpenSearch is a powerful search and analytics platform, and installing it on Debian 12 allows you to build scalable search applications. Hosting OpenSearch on a WindowsVPS ensures better performance, dedicated resources, and flexibility for handling growing data needs.

For more information about VPS hosting and optimizing your OpenSearch setup, visit WindowsVPS today.