How to use logback to log to a file?

[Minqi Jiang]

Hi all,

I'm having trouble figuring out how to make Storm log to a file. From my
understanding, the logback cluster.xml should specify the location of
output logs. However, taking a look at this file, it seems the output path
is specified as {storm.log.dir}. How can I find out what this value is?

I am running Storm locally for now on OS X 10.9.5. I looked inside the
storm directly in ~/.m2/repository/ and do not see a directory called "log"
or "logs".

Any help is much appreciated.

Thanks,
Minqi