Which method is used to monitor the health of Splunk?

The method used to monitor the health of Splunk is through internal logs, dashboards, and the Monitoring Console. This is the correct answer because the Monitoring Console serves as a comprehensive interface that provides insights into the health and performance of a Splunk deployment. It allows administrators to visualize real-time metrics, observe system performance, and identify potential issues.

Internal logs play a crucial role as they log various events and errors that can help diagnose problems with Splunk components. Dashboards are also utilized to create visual representations of the health metrics, making it easier for users to assess the overall status of the system.

In contrast, monitoring through external applications would limit access to Splunk's built-in features designed explicitly for tracking system health. Changing configuration files might impact system performance or behavior but does not provide a real-time assessment of health status. User roles management pertains to security and access control rather than health monitoring. Therefore, using internal logs, dashboards, and the Monitoring Console is the most effective and comprehensive method to keep track of Splunk's health.