Hello,
I think it's stable because is rotating then. You could change the verbosity of the log using the variable
LOGLEVEL=LEVEL
which the NC and the CC will obey. To change the verbosity of the CLC, SC and walrus you need instead to add the option
--log-level=LEVEL
to the variable OPTS on the function do_start in /etc/init.d/eucalyptus-cloud. LEVEL can be DEBUG, INFO, WARN, ERROR, and FATAL.
We did make it a bit easier in the next release.
cheers
graziano