Agents Administration - Tests
 

Configuration of CassThrdPoolTest

This test auto-discovers the thread pools of each stage on the target Cassandra Database node and for each thread pool, reports the number of active tasks and the tasks that were completed per second. In addition, this test reveals the tasks that were pending and the rate at which the tasks were blocked per second. Using this test, administrators can determine the thread pool containing the maximum number of active threads.

The default parameters associated with this test are as follows:

  • The TEST PERIOD list box helps the user to decide how often this test needs to be executed.

  • Specify the IP address of the host for which the test is being configured.

  • Specify the PORT at which the HOST listens. The default value is 9042.

  • Specify the port at which the JMX listens for requests from remote hosts in JMX REMOTE PORT text box. Ensure that you specify the same port that you configured in the cassandra-env.sh file (if the target Cassandra Database node is installed on a Unix host) or the cassandra-env.ps1 file (if the target Cassandra Database node is installed on a Windows host) in the (CASSANDRA_HOME) directory used by the target Cassandra Database node. To know how to specify the remote port, refer to Monitoring Cassandra Database document.

  • If JMX requires authentication only (but no security), then ensure that the JMX USER and JMX PASSWORD parameters are configured with the credentials of a user with read-write access to JMX. To know how to create this user, refer to Monitoring Cassandra Database document.

  • Confirm the JMX PASSWORD by retyping it in the CONFIRM PASSWORD text box.

  • To make diagnosis more efficient and accurate, the eG Enterprise suite embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option. The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled:

    • The eG manager license should allow the detailed diagnosis capability.
    • Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.

  • Once the necessary values have been provided, clicking on the Update button will register the changes made.

When changing the configuration for specific servers, a “*” beside the text box corresponding to the parameter signifies that these values have to be manually configured by the user. The parameter values that require to be configured will typically be prefixed with a “$” or contain a series of “*”. A value of "none" in the parameter value indicates that the corresponding parameter value can be changed if required.