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DBZ-2541 Add docs about new CONNECT_LOG4J environment variables

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Jeremy Finzel 2020-09-29 08:45:15 -05:00 committed by Jiri Pechanec
parent 0040eca740
commit 7552840f27
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6
documentation/modules/ROOT/partials/modules/logging/proc-configuring-log-level-docker.adoc
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@ -11,6 +11,12 @@ When you start the container,
set this environment variable to one of the log levels (for example, `-e LOG_LEVEL=DEBUG`),
and all of the code within the container will use that log level.
There is also an option to override other log4j properties. If you want to configure `log4j.rootLogger`
differently, then use the environment variable `CONNECT_LOG4J_LOGGERS`. For example to log only to stdout
(without `appender`), you can use `CONNECT_LOG4J_LOGGERS=INFO, stdout`. You can also set other supported
log4j environment variables with the CONNECT_LOG4J prefix, which will be mapped to properties in the `log4j.properties`
file by removing the `CONNECT_` prefix, lowercasing all characters, and converting all '_' characters to '.'.
If you need more control over the logging configuration,
create a new container image that is based on ours,
except that in your `Dockerfile`, copy your own `log4j.properties` file into the image.