Re: How to properly enable logging in "org.apache.catalina.core.StandardContext"

[Christopher Schultz <ch...@christopherschultz.net>]

David,

On 2/29/24 13:21, David Karr wrote:
> In our SpringBoot services, we sometimes run into situations where we get
> an exception like this:
> 
> org.springframework.context.ApplicationContextException: Unable to start
> web server; nested exception is
> org.springframework.boot.web.server.WebServerException: Unable to start
> embedded Tomcat
> 
> 
> It doesn't provide any meaningful root cause.  I've googled how to get more
> verbosity from this, but the results are so varied and often conflicting,
> and I've never found a strategy that works. It appears that the logger used
> in Catalina is not directly compatible with logback, or I'm not figuring
> out the correct logger name to use.
> 
> I was finally able to figure out why this particular failure was happening,
> but that was by carefully stepping through the code and finding new
> breakpoints to drill down further. I saw references to the "juli" framework
> for logging, which I had seen mentioned in the threads that talk about
> getting these logs, but I was never able to get it to work.
> 
> As opposed to using my serious debugging skills, I'd like to figure out how
> to simply increase the Tomcat logging levels so we can get better
> information.
> 

Is this helpful?

https://tomcat.apache.org/tomcat-9.0-doc/logging.html

-chris

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