Unable to see any kind of exceptions in Catalina.out about tomcat HOT 7 CLOSED

docker log container just shows catalina.{yyyy-mm-dd} localhost.{yyyy-mm-dd} but not catalina.out

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Do they get logged to stdout or stderr? If so, they should be in docker logs container-name.

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I have noticed a similar issue. It appears that the log gets rotated out after a few days and no more output is appended to stdout, I'm not sure what's causing it though it is reproducible on any of our tomcat docker images.

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im also facing the same issue

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I've managed to fix our logging issues by adding the following catalina-logging.properties file to the /usr/local/tomcat/conf/. I am not a Tomcat guru, so it's likely this can be simplified. Possibly to just:

java.util.logging.ConsoleHandler.rotatable = false

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Same issue here... :-/ I didn't get what is wrong, since the logging configuration seems to be the same as on my machine.

The important change in @icirellik example is moving from AsyncFileHandler to FileHandler. This seems to write every log record synchronously. However, I am slightly cautious about this change, sync synchronous logging may cause unnecessary performance hit...

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Given that this appears to be a Tomcat configuration issue (not an issue with the image itself that we could fix), I'm going to close. In the future, these sorts of questions/requests would be more appropriately posted to the Docker Community Forums, the Docker Community Slack, or Stack Overflow. Thanks!

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