Set Logging Level in Spring Boot via Environment Variable

Question

Should it be possible to set logging levels through environment variables alone in a Spring Boot application?

I don\'t want to use application.properties

Answer 1

Starting with Spring Boot 2.0.x this works again. Tested with Spring Boot v2.0.9.RELEASE. E.g. enable connection pool debug log:

LOGGING_LEVEL_COM_ZAXXER=DEBUG java -jar myApp.jar

or Spring framework debug log:

LOGGING_LEVEL_ORG_SPRINGFRAMEWORK=DEBUG java -jar myApp.jar

or both:

LOGGING_LEVEL_ORG_SPRINGFRAMEWORK=DEBUG LOGGING_LEVEL_COM_ZAXXER=DEBUG java -jar myApp.jar

See "Application Poperties" in Spring Boot Reference Documentation for more application properties.