We have crated this article because JBoss AS 6 has a command line utility which is very useful to use when in production environments if your JMS console is been disabled then twiddle really comes handy. However there can be n-numbers of twiddle commands available but in this article we would be sharing few of the very useful commands which is been used in day to activity for an JBoss administrators.

If you feel like you have any twiddle commands which can be useful for other then feel free to share it with us and others so that other fellow JBoss administrators can get the benefits out of them. We would also like to share that most of the changes made using these twiddle commands are not permanent, meaning if you restart the JBoss server then the changes which were made by the twiddle commands would be overridden by the configuration which are given in the respective XML files.

To make is user friendly I have break down this commands in different sections so you can concentrate on your interests list of commands.

System utility twiddle commands

Shutdown JBoss

./twiddle.sh -s localhost:1099 -u admin -p admin invoke jboss.system:type=Server shutdown

Taking Theard Dump

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:type=ServerInfo" listThreadDump >> threadDump.html

List Memory Pools

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:type=ServerInfo" listMemoryPools true > memory.html

List Thread Cpu Utilization

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:type=ServerInfo" listThreadCpuUtilization > cpu.html

Application related twiddle commands

Deploy

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:service=MainDeployer" deploy "file:///home/rmody/JBoss_Data/Jboss/AS6/jboss-as/server/d-1/deploy/Test_WAR.war"

UnDeploy

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:service=MainDeployer" undeploy "file:///home/rmody/JBoss_Data/Jboss/AS6/jboss-as/server/d-1/deploy/Test_WAR.war"

ReDeploy

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:service=MainDeployer" redeploy "file:///home/rmody/JBoss_Data/Jboss/AS6/jboss-as/server/d-1/deploy/Test_WAR.war"

Maximum processing time of a request

./twiddle.sh -s localhost:1099 -u admin -p admin get "jboss.web:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/Test_WAR,j2eeType=Servlet,name=jsp" maxTime

Number of requests processed by this wrapper

./twiddle.sh -s localhost:1099 -u admin -p admin get "jboss.web:J2EEApplication=none,J2EEServer=none,WebModule=//localhost/Test_WAR,j2eeType=Servlet,name=jsp" requestCount

JMS related twiddle commands

Creat a Queue

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.messaging:service=ServerPeer" deployQueue "testQueue" "testQueue-JNDIname"

Remove a Queue

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.messaging:service=ServerPeer" undeployQueue "TestQ"

Creat a Topic

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.messaging:service=ServerPeer" deployTopic "testTopic" "testTopic-JNDIname"

Remove a Topic

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.messaging:service=ServerPeer" undeployTopic "testTopic"

The number of messages in the queue

./twiddle.sh -s localhost:1099 -u admin -p admin get "jboss.messaging.destination:name=TestQ,service=Queue" MessageCount

Remove all messages in the queue

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.messaging.destination:name=TestQ,service=Queue" removeAllMessages

DataSource related twiddle commands

Connections currently in use

./twiddle.sh -s localhost:1099 -u admin -p admin get "jboss.jca:name=DefaultDS,service=ManagedConnectionPool" InUseConnectionCount

Logging Log4j related twiddle commands

Sets the log level for a given logger

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:service=Logging,type=Log4jService" setLoggerLevel "org.jboss" "TRACE"

Sets the levels of each logger specified by the given comma seperated list of logger names.

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:service=Logging,type=Log4jService" setLoggerLevels "org.jboss,org.jboss.system" "ERROR"

Displays the log level of a given logger.

./twiddle.sh -s localhost:1099 -u admin -p admin invoke "jboss.system:service=Logging,type=Log4jService" getLoggerLevel "org.jboss"