| [[HowdoIenabledebuglogging-HowdoIenabledebuglogging]] |
| = How do I enable debug logging? |
| |
| Camel uses convention over configuration so sometimes it's useful to turn |
| on debug logging to see how Camel is operating and to try and diagnose |
| issues. |
| |
| Camel uses http://www.slf4j.org/[sfl4j] which allows you to configure |
| logging via, among others: |
| |
| * http://logging.apache.org/log4j/[Log4j] |
| * http://logback.qos.ch/[Logback] |
| * https://docs.oracle.com/javase/8/docs/api/java/util/logging/package-summary.html[JDK Util Logging logging] |
| |
| To enable debug logging we recommend you |
| xref:faq/how-do-i-use-log4j.adoc[use log4j for logging] then make sure your |
| log4j.properties file enables DEBUG level logging for the |
| `org.apache.camel` package. |
| |
| For example here is a `log4j.properties` file with debug Camel logging: |
| enabled |
| |
| [source,java] |
| ---- |
| log4j.rootLogger=INFO, out |
| |
| log4j.logger.org.apache.camel=DEBUG |
| |
| log4j.appender.out=org.apache.log4j.ConsoleAppender |
| log4j.appender.out.layout=org.apache.log4j.PatternLayout |
| log4j.appender.out.layout.ConversionPattern=[%30.30t] %-30.30c{1} %-5p %m%n |
| #log4j.appender.out.layout.ConversionPattern=%d [%-15.15t] %-5p %-30.30c{1} - %m%n |
| ---- |
