Cassandra cluster in a single machine with Ubuntu and VirtualBox

This is a simple tutorial on creating a Cassandra cluster using a single machine with only Ubuntu and VirtualBox.If you’re willing to do this, I’m assuming you have some basic knowledge of Linux commands, such as for setting permissions (sudo, chown, chmod) and installing packages. However, it’s really easy. In this case we will be using a Ubuntu machine, hosting other Ubuntu machines as well.