In this tutorial, we will show you how to install Apache Cassandra on your Debian 9. For those of you who didn’t know, Apache Cassandra is a NoSQL database intended for storing large amounts of data in a decentralized, highly available cluster. NoSQL refers to a database with a data model other than the tabular relations used in relational databases such as MySQL, PostgreSQL, and Microsoft SQL. The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance.
This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo’ to the commands to get root privileges. I will show you through the step by step installation Apache Cassandra NoSql on a Debian 9 (Stretch) server.
Install Apache Cassandra on Debian 9 Stretch
Step 1. Before we install any software, it’s important to make sure your system is up to date by running these following apt-get commands in the terminal:
apt-get update apt-get upgrade
Step 2. Installing Java.
Cassandra needs Java application to be running on your server, make sure you have installed latest Java version:
sudo nano /etc/apt/sources.list.d/java-8-debian.list
And add the following two lines at the end of the file:
deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main
Now import the GPG key on your system for validating packages before installing them:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886
Then, you will need to fully update the system with the following command and install it:
sudo apt-get update sudo apt-get install oracle-java8-installer
Step 2. Installing Cassandra.
We will install Cassandra using official package available on Apache Software Foundation:
Unpack the archive:
tar -xvzf apache-cassandra-3.11.1-bin.tar.gz mv apache-cassandra-3.11.1 ~/cassandra
Create the needed directories:
mkdir /var/lib/cassandra mkdir /var/log/cassandra
Set Cassandra’s variables by running:
export CASSANDRA_HOME=~/cassandra export PATH=$PATH:$CASSANDRA_HOME/bin
Next, You can run a single-node test cluster of Cassandra with the following commands:
sh ~/cassandra/bin/cassandra sh ~/cassandra/bin/cassandra-cli
If you get “Connected to: ‘Test Cluster” you are running your single-node cluster successfully.
Congratulations! You have successfully installed Apache Cassandra. Thanks for using this tutorial for installing the latest version of Apache Cassandra NoSql on the Debian 9 Stretch server. For additional help or useful information, we recommend you to check the official Apache Cassandra website.