Cassandra

Apache Cassandra is an open-source distributed database management system designed to handle large amounts of data across many commodity servers, providing high availability with no single point of failure.

Prerequisites

• Install gateway version 5.0.0 or later.
• Map a suitable gateway management profile to a resource.
• Create credentials with type JMX before assigning a template to a resource. The Port, Connection Time-out, and Is Secure values are not used to create credentials.
• Configure JMX in the end device.

Discovery using the gateway

The administrator can deploy a gateway to support Cassandra agentless monitoring. The gateway establishes a connection to the database using the management profile, collects metrics from the templates, and starts monitoring.

To monitor Cassandra:

• Associate appropriate database credentials to the discovered database.
• Assign one or more database-specific global templates on the device.

Choose one of the following management mechanisms to discover Cassandra servers and add them to your inventory:

• WMI

• SSH

• SNMP

• (Optional)Manually add a database server to the infrastructure inventory.

  1. Select Infrastructure.
  2. Click Settings > Resource > Add.
  3. From the Add Device window, enter the required details such as Device Type and Management Profile.
  4. Click Save.

View resource metrics

The gateway monitors the application using the assigned templates and displays the results in graphical format. To view resource metrics, click the desired Database Resource Name > Resource Details > Metrics.

Troubleshooting

Verify the following if the graphs are generated incorrectly:

• The resource is accessible and Telnet is established for the IP address and port.
• Valid credentials are used for the resource.

If you experience Cassandra monitoring issues, try the following troubleshooting steps:

1. Verify server and gateway connectivity using Ping - ping IP Address

Example - ping 12.26.105.173

2. Verify Telnet-to-server listening port connectivity - telnet IP Address Port

Example - telnet 172.26.105.173 9988

Supported templates

• Cassandra ClientReq Storage Threadpool Template
• Cassandra ColumnFamily Template
• Cassandra Jvm Template
• Cassandra Keyspace Template

After selecting the templates, you can:

• Assign Cassandra templates from Setup or at the device level.
• Customize default configuration parameter values while assigning the template.

Resource template configuration parameters

Supported metrics