Apache Cassandra is a NoSQL database management system which is free and open-source.
Before downloading Cassandra , you should update your system and install Java 8.
$ sudo apt update $ sudo apt upgrade $ sudo apt install default-jdk
To verify Java 8 is installed you can use:
$ java -version
After installing Java, you need to add Cassandra repository and Cassandra public key by following commands:
$ echo "deb http://www.apache.org/dist/cassandra/debian 311x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list $ sudo apt-key adv --keyserver pool.sks-keyservers.net --recv-key A278B781FE4B2BDA
After adding repository and public key, you should update your system again and you can install Cassandra by typing:
$ sudo apt update $ sudo apt install cassandra
After that, you can start cassandra with :
$ sudo service cassandra start
Verify that cassandra is running by invoking nodetool status from the command line
$ nodetool status Datacenter: datacenter1 ======================= Status=Up/Down |/ State=Normal/Leaving/Joining/Moving -- Address Load Tokens Owns (effective) Host ID Rack UN 127.0.0.1 222.14 KB 256 100.0% 2a0b7fa9-23c6-40d3-83a4-e6c06e2f5736 rack1