Installing Cassandra DB on Ubuntu involves a series of steps to ensure a successful setup. Here is a comprehensive guide on how to install Cassandra DB on Ubuntu:

Prerequisites

Before you begin the installation process, make sure you have the following prerequisites:

• Ubuntu Server: Make sure you have an Ubuntu server up and running.
• Java: Cassandra requires Java to be installed on the server. You can install OpenJDK using the following command:

sudo apt update sudo apt install default-jre

Step 1: Add Apache Cassandra Repository

The first step is to add the Apache Cassandra repository to your system. You can do this by running the following commands:

echo "deb http://www.apache.org/dist/cassandra/debian 311x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list curl https://www.apache.org/dist/cassandra/KEYS | sudo apt-key add - sudo apt update

Step 2: Install Cassandra

Once the repository is added, you can install Cassandra by running the following command:

sudo apt install cassandra

Step 3: Start Cassandra Service

After the installation is complete, start the Cassandra service using the following command:

sudo service cassandra start

Step 4: Verify Installation

To verify that Cassandra is running on your system, you can use the nodetool utility:

nodetool status

Step 5: Accessing Cassandra

You can access the Cassandra shell by running the following command:

cqlsh

You have successfully installed and set up Cassandra DB on your Ubuntu server. You can now start using Cassandra for your applications and projects.