M04 Q28 How do you change logging level of a package using loggers endpoint?

Spring Actuator allows you to list currently configured loggers with their levels in following ways:

• via HTTP by visiting /actuator/loggers endpoint
• via JMX by executing org.springframework.boot/Endpoint/Loggers/Operations/loggers

loggers endpoint is exposed by default via JMX, to use it via HTTP you need to expose it by setting following property in application.properties:

management.endpoints.web.exposure.include=loggers

You can also view logging level for individual logger:

• via HTTP by visiting /actuator/loggers/${LOGGER_NAME}, for example: /actuator/loggers/com.app.question28

• via JMX by executing org.springframework.boot/Endpoint/Loggers/Operations/loggerLevels with provided name parameter

You can change logging level for package by:

• HTTP via POST to /actuator/loggers/${LOGGER_NAME}

curl -i -X POST -H 'Content-Type: application/json' -d '{"configuredLevel": "TRACE"}' \
http://localhost:8080/actuator/loggers/com.app.question28

• JMX via org.springframework.boot/Endpoint/Loggers/Operations/configureLogLevel with name and configuredLevel parameters set