How to install Cassandra on RHEL

In this article, we will see how to install Cassandra on RHEL step by step.

What is Apachae Cassandra]

Cassandra is a NoSQL distributed database. By design, NoSQL databases are lightweight, open-source, non-relational, and largely distributed. Counted among their strengths are horizontal scalability, distributed architectures, and a flexible approach to schema definition.

Prerequisites to Apache Cassandra on RHEL:
1. Install the latest version of Java 8 or Java 11, either the Oracle Java Standard Edition 8 / Oracle Java Standard Edition 11 (Long Term Support) or OpenJDK 8 / OpenJDK 11. To verify that you have the correct version of java installed, type java -version.

2. Install Java jdk 11 on RHEL using this or go to the below link.

How to install Java jdk 11 on RHEL

3. For using cqlsh, the latest version of Python 3.6+ or Python 2.7. Now verify python version using below link:

python --version

4. Now create file /etc/yum.repos.d/cassandra.repo and paste below command in the file and save it. Where 41x means version number 4.1. If we want to install 4.0 then we have to give 40x.

[cassandra]
name=Apache Cassandra
baseurl=https://redhat.cassandra.apache.org/41x/
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://downloads.apache.org/cassandra/KEYS

5. Now, run update command.

sudo yum update

6. Now install cassandra using yum.

sudo yum install cassandra

7. Now install the cassandra service using below command:

sudo service cassandra start

8. Verify the status of cassandra service RHEL using below command:

udo service cassandra status