The Discovery Service uses the Logback logging system. The Logback manual provides an exhaustive set of directions and available options that may be configured. This document does not attempt to replicate this information but instead provides Shibboleth specific information, as it pertains to logging, and instructions for performing simple, common, tasks.
Logging Configuration
The logging configuration for the DS is located at $DS_HOME/conf/logging.xml. This file is checked for changes every 5 minutes and is reloaded if changes have been made. This means a deployer can keep the logging level at WARN until a problem occurs and then change the logging to DEBUG to get more information if the problem persists, all without restarting the DS.
Lost Logs in DS 2.0
If you cannot see any logs, you should refer to case 37 in Jira