Hi@akhtar,
To install cassandra in your system, follow the below given steps.
$ vi /etc/yum.repos.d/cassandra.repo
[cassandra]
name=Apache Cassandra
baseurl=https://www.apache.org/dist/cassandra/redhat/311x/
gpgcheck=1
repo_gpgcheck=1
gpgkey=https://www.apache.org/dist/cassandra/KEYS
$ yum -y install cassandra
$ systemctl daemon-reload
$ systemctl start cassandra
$ systemctl enable cassandra
$ nodetool status
If you follow all the above steps, you will able to see status.
Thank You