Page History
...
Tomcat
...
logs
...
its
...
output
...
in
...
a
...
file
...
called
...
catalina.out.
...
Such
...
file
...
contains
...
the
...
output
...
from
...
the
...
server
...
itself
...
and
...
from
...
all
...
the
...
web
...
applications
...
that
...
don't
...
specify
...
an
...
alternative
...
output
...
file.
...
Different
...
loggers
...
can
...
be
...
used
...
to
...
log
...
web
...
application
...
outputs.
...
The
...
following
...
instructions
...
are
...
for
...
java.util.logging
...
and
...
Log4j
...
.
...
Web
...
Application
...
logging
...
with
...
java.util.logging
...
All
...
you
...
have
...
to
...
do
...
is
...
create
...
a
...
file
...
called
...
logging.properties
...
in
...
WEB-INF/classes
...
with
...
the
...
following
...
content,
...
where
...
you
...
have
...
replaced
...
APPLICATION_OUTPUT_FILE
...
with
...
your
...
choice
...
of
...
output
...
file
...
name
...
(it
...
would
...
be
...
nice
...
to
...
have
...
in
...
it
...
the
...
name
...
of
...
the
...
application
...
that
...
produced
...
the
...
file):
| Code Block |
|---|
} handlers = org.apache.juli.FileHandler ############################################################ # Handler specific properties. # Describes specific configuration info for Handlers. ############################################################ org.apache.juli.FileHandler.level = FINE org.apache.juli.FileHandler.directory = ${catalina.base}/logs org.apache.juli.FileHandler.prefix = APPLICATION_OUTPUT_FILE. {code} |
If
...
you
...
now
...
redeploy
...
your
...
application
...
all
...
the
...
output
...
from
...
your
...
application
...
will
...
be
...
logged
...
in
...
a
...
file
...
called
| Code Block |
|---|
${APPLICATION_OUTPUT_FILE}-${date}.log, |
so
...
a
...
file
...
is
...
created
...
each
...
day.
...
There
...
is
...
no
...
way
...
to
...
change
...
this
...
configuration
...
as
...
it
...
is
...
all
...
done
...
internally
...
in
...
tomcat.
...
The
...
advantage
...
of
...
using
...
java.util.logging
...
over
...
log4j
...
is
...
that
...
no
...
additional
...
dependencies
...
are
...
introduced.
...
Redirection
...
stdout
...
and
...
stderr
...
to
...
Logger
...
By
...
default
...
Tomcat
...
will
...
not
...
redirect
...
stdout
...
and
...
stderr
...
to
...
the
...
Logger.
...
This
...
behaviour
...
ca
...
be
...
changed
...
by
...
setting
...
the
...
context
...
parameter
...
swallowOutput
...
to
...
true
...
.
...
This
...
has
...
been
...
done
...
on
...
glast-tomcat02
...
and
...
glast-tomcat03
...
.
...
Monitoring
...
the
...
log
...
file
...
Use
...
probe
...
to
...
monitor
...
the
...
log
...
file
...
produced
...
by
...
your
...
application
...
going
...
to:
| Code Block |
|---|
} http://_serverName_.slac.stanford.edu:8080/probe/logs/ {code} where _serverName_ is the tomcat server on which the application has been deployed. |
where serverName is the tomcat server on which the application has been deployed.