When troubleshooting a connectivity issue with a Qlik Sense node, which log file would be most useful?

In the context of troubleshooting connectivity issues with a Qlik Sense node, the Proxy log is particularly useful. This log captures details about the requests made to the Qlik Sense services and how the Proxy handles these requests. Since the Proxy is responsible for managing user sessions and serving as an intermediary for client-server communication, examining this log can reveal important information about the connectivity between the client and the Qlik Sense services.

If a user is experiencing difficulties connecting to the Qlik Sense environment, the Proxy log will show whether the requests are reaching the Proxy and how the Proxy is responding. It can also provide insights into any authentication issues or failures that may be occurring during the connection attempts.

The other log files do serve their specific purposes in the Qlik Sense architecture, such as the Repository log which focuses on repository operations, the Engine log that details the application's execution, and the Scheduler log that logs tasks related to scheduled jobs, but they are not as directly related to the user connectivity challenges. The Proxy log, on the other hand, is designed to capture the network and session-related events essential for diagnosing connectivity problems.