Installing Cassandra


  • The latest version of Java 8, either the Oracle Java Standard Edition 8 or OpenJDK 8. To verify that you have the correct version of java installed, type java -version.
  • For using cqlsh, the latest version of Python 2.7. To verify that you have the correct version of Python installed, type python --version.

Installation from binary tarball files

tar -xzvf apache-cassandra-3.6-bin.tar.gz

The files will be extracted into apache-cassandra-3.6, you need to substitute 3.6 with the release number that you have downloaded.

  • Optionally add apache-cassandra-3.6\bin to your path.
  • Start Cassandra in the foreground by invoking bin/cassandra -f from the command line. Press “Control-C” to stop Cassandra. Start Cassandra in the background by invoking bin/cassandra from the command line. Invoke kill pid or pkill -f CassandraDaemon to stop Cassandra, where pid is the Cassandra process id, which you can find for example by invoking pgrep -f CassandraDaemon.
  • Verify that Cassandra is running by invoking bin/nodetool status from the command line.
  • Configuration files are located in the conf sub-directory.
  • Since Cassandra 2.1, log and data directories are located in the logs and data sub-directories respectively. Older versions defaulted to /var/log/cassandra and /var/lib/cassandra. Due to this, it is necessary to either start Cassandra with root privileges or change conf/cassandra.yaml to use directories owned by the current user, as explained below in the section on changing the location of directories.

Installation from Debian packages

  • Add the Apache repository of Cassandra to /etc/apt/sources.list.d/cassandra.sources.list, for example for version 3.6:
echo "deb 36x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list
  • Add the Apache Cassandra repository keys:
curl | sudo apt-key add -
  • Update the repositories:
sudo apt-get update
  • If you encounter this error:
GPG error: 36x InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A278B781FE4B2BDA

Then add the public key A278B781FE4B2BDA as follows:

sudo apt-key adv --keyserver --recv-key A278B781FE4B2BDA

and repeat sudo apt-get update. The actual key may be different, you get it from the error message itself. For a full list of Apache contributors public keys, you can refer to this link.

  • Install Cassandra:
sudo apt-get install cassandra
  • You can start Cassandra with sudo service cassandra start and stop it with sudo service cassandra stop. However, normally the service will start automatically. For this reason be sure to stop it if you need to make any configuration changes.
  • Verify that Cassandra is running by invoking nodetool status from the command line.
  • The default location of configuration files is /etc/cassandra.
  • The default location of log and data directories is /var/log/cassandra/ and /var/lib/cassandra.