Use wsadminlib's method setServerTrace(). Here is a simple example:
nodename = 'node1'
servername = 'server1'
tracespec = '*=info:com.ibm.ws.sip.*=all'
setServerTrace(nodename, servername, tracespec)
And a screen capture:
root@ding6: /opt/WAS70/bin/wsadmin.sh -lang jython -host ding6 -port 8879
WASX7209I: Connected to process "dmgr" on node dmgr using SOAP connector; The type of process is: DeploymentManager
WASX7031I: For help, enter: "print Help.help()"
wsadmin>
wsadmin>execfile('wsadminlib.py')
$Id: wsadminlib.py 50 2009-01-14 14:42:11Z ding $
wsadmin>
wsadmin>enableDebugMessages()
[2010-0301-1149-3100] enableDebugMessages Verbose trace messages are now enabled; future debug messages will now be printed.
wsadmin>
wsadmin>nodename = 'node1'
wsadmin>servername = 'server1'
wsadmin>tracespec = '*=info:com.ibm.ws.sip.*=all'
wsadmin>setServerTrace(nodename, servername, tracespec)
[2010-0301-1150-0800] setServerTrace: Setting tracing on server node1/server1 to *=info:com.ibm.ws.sip.*=all
wsadmin>
Be sure to take a look at the method in wsadminlib.py. It has defaults which you can override for the number and size of backup log files. And on z/OS, it automatically stores the log files in the same location as they appear on non-Z platforms.
