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Manage Apache Cassandra

On Linux, when you select to install Cassandra using the API Gateway installer as part of a Standard or Complete setup, Cassandra starts automatically. To start or stop Cassandra manually or as a service, perform the steps described in this topic.

Note   Before you start Cassandra, you must follow the best practices in Apache Cassandra Best Practices to achieve a stable Cassandra environment, and to prevent data integrity and performance issues.

Manage Apache Cassandra

This section explains how to start and stop Cassandra.

Start Apache Cassandra

To start Cassandra in the background:

  1. Open a command prompt, and change to the following directory:


  1. Run the following command:

$ ./cassandra

To start Cassandra in the foreground, run the following command:

$ ./cassandra -f

For more details, see https://wiki.apache.org/cassandra/RunningCassandra.

Start Cassandra as a service

To install Cassandra as a service, you must install and configure appropriate startup script for your system. For example, see the following example startup scripts:

When startup scripts are configured, you can then start Cassandra as a service.

Note   You must have root or sudo permissions to start Cassandra as a service.

For example, typically the command to start Cassandra as a service is as follows:

$ sudo service cassandra start

Stop Cassandra

  1. Find the Cassandra Java process ID (PID):

$ ps auwx | grep cassandra

  1. Run the following command:

$ sudo kill pid

Stop Cassandra as a service

You must have root or sudo permissions to stop the Cassandra service as follows:

$ sudo service cassandra stop

Connect to API Gateway for the first time

Connecting to API Gateway depends on your operating system and installation setup type (Standard, Complete, or Custom).

Standard or Complete setup

If you installed a default Standard or Complete setup (both include the QuickStart tutorial), Cassandra is installed on the same host, and listens on localhost by default. API Gateway runs on the same host and connects to Cassandra by default.

Custom setup

If you installed a Custom setup and did not select the Quickstart tutorial, you must update the API Gateway Cassandra client configuration as follows:

  1. Open the API Gateway group configuration in Policy Studio.
  2. Select Server Settings > Cassandra > Authentication, and set the Cassandra username/password (default is cassandra/cassandra).
  3. Select Server Settings > Cassandra > Hosts. Add an address for the Cassandra node. You can enter an IP address or host name.
  4. Deploy the configuration to the API Gateway group.

For more details on configuring Server Settings in the Policy Studio client, see Cassandra Settings in the API Gateway Administrator Guide. For details on updating the Cassandra server configuration, see Configure a highly available Cassandra cluster.

Further details

For more details on Apache Cassandra, see the following:

Related Links