3.8.4 Monitoring MBeans statistics with wsadmin

Overview

When WXS is deployed with WAS, the wsadmin tool can be used to...

Get a reference to the WXS MBeans using the AdminControl scripting object
Invoke the exposed operations on WXS MBeans using AdminControl scripting object

For example, to get statistics for a cache instance...

nodeSpecification = ",node=" + nodeName
queryString = "type=DynaCache,process=" + serverName + nodeSpecification + ",*"
mbean = AdminControl.queryNames(queryString)
cacheInstances = AdminControl.invoke(mbean,"getCacheInstanceNames").split(linesep)
stats = AdminControl.invoke(mbean, "getAllCacheStatistics", cacheInstance).split(linesep)

DynaCacheStatisticsCSV.py

To collect cache statistics using MBeans, and store data to a CSV file, you can run...

$ ./wsadmin.sh -user wasadmin \
               -password wasadmin \
               -lang jython \
               -f DynaCacheStatisticsCSV.py \
               server1 \
               dyna_cache.log  \
               "-cacheInstance baseCache -sleepUnit seconds -sleepInterval 10"

*sys-package-mgr*: processing modified jar, 'C:\Program Files\IBM\WebSphere\AppServer\lib\wsobjectgrid.jar'
*sys-package-mgr*: processing modified jar, 'C:\Program Files\IBM\WebSphere\AppServer\lib\wsogclient.jar'
WASX7209I: Connected to process "dmgr" on node deepkhanCellManager01 using SOAP connector;  
The type of process is: DeploymentManager
WASX7303I: The following options are passed to the scripting environment and are available as arguments 
that are stored in the argv variable: "[server1, dy na_out.log, -cacheInstance baseCache -sleepUnit seconds 
-sleepInterval 10]"
['-cacheInstance', 'baseCache', '-sleepUnit', 'seconds', '-sleepInterval', '10']

 DEBUG INFO:
       serverName= server1
          version=
          majorVersion=
          minorVersion=
       fileName= dyna_out.log
       nodeName= thinkNode01
       instanceName= baseCache
       sleepUnit= seconds
       sleepInterval= 10
          sleepMilliseconds= 10000
       fileAppend= false
instance: baseCache

The script sends output to a CSV file every ten seconds, and uses the baseCache cache instance (Default cache instance in WAS).

Paste CSV file output into a spreadsheet such as eXcel to create graphs.