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

Here's an example using Logback with Janino to conditionally include different logging configs via properties or environmental variables... The base config, logback.xml is using conditionals for development console logging or production file logging... just drop the following files in /resources/

---

logback.xml

---

---

dev.xml

    
        
            utf-8
            %-30([%p] [%c:%L]) » %m%n%rEx
        
    

    
    

    
        true
    

    
        
    

---

pro.xml

    
    
    

    
        
            FILE_NAME_PATTERN
            7
        
        
            ${FILE_LOG_PATTERN}
        
    

    
        512