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I wanna read spring property and based on this property change log level for some packages (not for root logger). How can I implement it using logback?
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In terms of scaling, the challenge is to change log levels in each instance. So to avoid all pitfalls following is needed: Dynamically change the log level at runtime without application restart. Propagation of log level changes across the application instances.
To change log levels as a root user, perform the following: To enable debug logging, run the following command: /subsystem=logging/root-logger=ROOT:change-root-log-level(level=DEBUG) To disable debug logging, run the following command: /subsystem=logging/root-logger=ROOT:change-root-log-level(level=INFO)
See top related question: SLF4J - Logback: How to configure loggers in runtime?
More specific ((ch.qos.logback.classic.Logger)LoggerFactory.getLogger("abc.xyz")) .setLevel(Level.XXX) should do the trick.
I'm not sure what your use case is, but I prefer to use the JMX interface: http://logback.qos.ch/manual/jmxConfig.html.
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