Hua,
On 9/8/22 10:30, Hua Zhang wrote:
Hi Tomcat,
I have a question about how to get more debug information in a tomcat log
file. Sometimes my websites, which run on tomcat 9.0.43, suddenly all went
down without a good reason.
You might want to consider an upgrade. That version of Tomcat is 18
months old.
When this happens, the only thing I can do is restart the Tomcat service.
I am trying to figure out why it happened, however in the log file
(catalina.out), there is just a repeated bunch of java NullPointerException.
[2022-09-07 21:44:01] [crit] Error processing request
[2022-09-07 21:44:01] [crit] java.lang.NullPointerException
[2022-09-07 21:48:59] [crit] Error processing request
[2022-09-07 21:48:59] [crit] java.lang.NullPointerException
[2022-09-07 21:54:48] [crit] Error processing request
[2022-09-07 21:54:48] [crit] java.lang.NullPointerException
So my question is: is there a way to get more debug information in the log
file? If so, how?
Can you post the contents of your logging.properties file? My guess is
that you have changed it from the default. Better yet -- can you send a
'diff' of your file relative to the stock logging.properties file that
shipped with your Tomcat package?
-chris
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