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Monday, August 19, 2013

Invoking WLST from Ant

There are many Middleware Admins who knows do build and deployment out there using Ant to automate their Oracle Fusion Middleware suite configurations on WebLogic domain. and if you would like to embed your WLST configuration scripts into your ant build.xml script files, you can certainly do so. This is simple and easy task which I suppose to post it long back :)

Invoking WLST from a build.xml


Invoking WLST from ANT Script

We can use the WLST script within the build.xml that is between
The other option is you can develop a WLST script in regular fashion, invoke with script path.
We can use both of them part of ANT script(build.xml) invokes part of WLST individual file(.py) then there would be priority which part must be executed first that we can handle with the attribute 'executeScriptBeforeFile' by default it is true you can use false when you don't want.

There are situations where you need to invoke the WLST script from ANT script. There are following possibilities:

  • configure WebLogic resources with ANT
  • Server Control using ANT
  • Monitoring using ANT
The main advantages of using 'WLST with ANT' comes when there is complete templatization of the WebLogic domain configurations for heavy resource configurations as part, such as JMS Resources, JDBC datasources, Message Bridges etc.,

Sample WLSTbuild.xml



  
  
  
    
      
    
  
 
  
    
        
    
   


Sample WLSTbuild.properties file

Now create a properties file say wlstbuild.properties that initialized in the ant script with property element.
weblogic.home.dir=C:/Oracle/Middleware/wlserver_10.3
weblogic.lib.dir=${weblogic.home.dir}/server/lib
wlst.script.source=C:/pbin/test.py

Sample Python script invoked in ant script

The test.py WLST Script will fetch the Server list online WLST.
# Started recording all user actions at Tue Dec 18 22:41:59 IST 2012
svrs = cmo.getServers() 
print 'Servers in the domain are' 
for x in svrs: 
        print x.getName()

How to invoke WLST from ant?

Here the pre-requisite to run the ant script assumed that the WebLogic domain already created and Running fine. Some of the build experts prefer to start internal targets with dashes just to make sure users cannot run them from the command line. In fact, I make it a standard practice to have all internal targets start with - just for this reason. You can try the old double-dash trick. I don't have Ant installed on my current system, so I can't test it. Double dashes is a common Unix trick that most commands use to help end parameters when you have files and stuff that start with a dash. By the way, the tasks should be the last thing on your command line:
$ ant -f wlstbuild.xml -- -stopservers
Targets beginning with a hyphen such as "-stopservers" is valid, and it can be used to name targets that should not be called directly from the command line. Usually, it would be called by someother target such as app-deployment depends on targets as -stopapp, -undeploy, -deploy, -startapp, -stopservers, -startservers etc.

To invoke you need to run the setWLSEnv.sh/cmd
prompt$ ant -f wlstbuild.xml
Running ant embed WLST script

Wednesday, June 26, 2013

JMS Bridges using WLST



My new project where I found many new things to learn about JMS. I was searching for a Configure JMS bridge using Python, but there very few blog posts found and that too, their scope limited to target to AdminServer and they are limited for single bridge configuration only. We have analyzed and developed this where you can take complete advantage.

Oracle WebLogic JMS- MQ Series



WebLogic JMS Bridge to MQ Series broker

Oracle WebLogic JMS-JMS



The JMS bridge configuration is dependency on Local and remote Queues or Topics. The bridge can be established between source and targeted destinations need to be created with the following parameters :
  •  JMS bridge destination
  •  Connection URL
  • JMS ConnectionFactory JNDI Name
  •  JMS destination JNDIName

Once the source and target is configured you can configure the message bridges. The bridge configuration requires the following:
  • Bridge name
  •  Source destination
  • Target destination
  • JMS Bridge deployment target Cluster or server

Usually there could be different messaging systems can communicate with JMS Bridges. Bridge can be JMS-JMS communication or external systems can be integrated with messages. This messages can be plain Text or xml files or Java objects. To handle them JEE applications must use Message driven Beans MDB.

#========================================
#  JMS Bridge Configuration script.
#  FileName:  jmsBridges.py
#=========================================
from java.util import *
from java.io import FileInputStream
def createdestination(JMSBridgeDestination,ConnectionURL,ConnectionFactoryJNDIName,DestinationJNDIName):
        cmo.createJMSBridgeDestination(JMSBridgeDestination)
        JMSBridgeDestination = cmo.lookupJMSBridgeDestination(JMSBridgeDestination)
        JMSBridgeDestination.setClasspath('')
        JMSBridgeDestination.setConnectionURL(ConnectionURL)
        JMSBridgeDestination.setAdapterJNDIName('eis.jms.WLSConnectionFactoryJNDINoTX')
        JMSBridgeDestination.setConnectionFactoryJNDIName(ConnectionFactoryJNDIName)
        JMSBridgeDestination.setDestinationJNDIName(DestinationJNDIName)
        return JMSBridgeDestination
 
def create_bridge(MessagingBridge,Cluster,srcbdest,TJMSBridgeDestination,qos):
        cmo.createMessagingBridge(MessagingBridge)
        bridge = cmo.lookupMessagingBridge(MessagingBridge)
        cluster = cmo.lookupCluster(Cluster)
        targets = bridge.getTargets()
        targets.append(cluster)
        bridge.setTargets(targets)
        bridge.setSourceDestination(srcbdest)
        bridge.setTargetDestination(TJMSBridgeDestination)
        bridge.setStarted(true)
        bridge.setSelector('')
        bridge.setQualityOfService(qos)

 
def getp(x):
        return configProps.get(""+x+"")
 
envproperty=""
if (len(sys.argv) > 1):
  envproperty=sys.argv[1]
else:
    print "Environment Property file not specified"
    sys.exit(2)
 
propInputStream=FileInputStream(envproperty)
configProps=Properties()
configProps.load(propInputStream)
 
USER=configProps.get("USER")
PASSWD=configProps.get("PASSWD")
ADMNURL=configProps.get("ADMNURL")
 
print 'CONNECT TO ADMIN SERVER'
connect(USER, PASSWD, ADMNURL)
 
print 'START EDIT MODE'
n=int(getp("num_of_bridges")) # number of Brdiges
edit()
startEdit()
try:
        print 'CREATE SOURCE JMS BRIDGE DESTINATION'
        for i in range(1,n+1):
                # if Bridge already exists skip
                MessagingBridge=getp("MessagingBridge"+str(i))
                print "checking ... ", MessagingBridge
                ref = getMBean("/MessagingBridges/"+MessagingBridge)
                if(ref == None):
                        S_Dest=getp("S_Dest"+str(i))
                        S_ConnURL=getp("S_ConnURL"+str(i))
                        S_ConnFJNDI=getp("S_ConnFJNDI"+str(i))
                        S_DestJNDI=getp("S_DestJNDI"+str(i))
                        src=createdestination(S_Dest,S_ConnURL,S_ConnFJNDI,S_DestJNDI)

                        print 'CREATE TARGET JMS BRIDGE DESTINATION'+str(i)

                        T_Dest=getp("T_Dest"+str(i))
                        T_ConnURL=getp("T_ConnURL"+str(i))
                        T_ConnFJNDI=getp("T_ConnFJNDI"+str(i))
                        T_DestJNDI=getp("T_DestJNDI"+str(i))

                        target=createdestination(T_Dest,T_ConnURL,T_ConnFJNDI,T_DestJNDI)
                        print 'CREATE MESSAGING BRIDGE'
                        cluster=getp("jms_mod_target1")
                        qos=getp("QualityOfService"+str(i))
                        create_bridge(MessagingBridge,cluster,src,target,qos)
                else:
                        pass


Flexibility in defining Bridges Passed through many patterns and learnings, I have developed this as reusable, generic as possible. Scope for further extendable.

I believe "Do it One at Once", To make work simple, Here I had used JMS Bridges with non-transactional. You can change if required. Correspondingly there is the implication with "Atmost-once" option. The "Exactly-Once" option is best suitable choice for non-transnational messages QoS.

WLST Bridge Configuration Properties



You need to customize it according to your domains. This script allows you to create as many bridges as you wish. Just one thing you need to change in the properties is that num_of_bridges value.
Here is the Sample properties file where you can replace the values according to your requirements. The WebLogic destination can be identified with t3 protocol, whereas MQ series uses file:// protocol which requires the full path of the path so it looks like three slashes (file:///)

In the sample CF are connectionFactories that participate in the bridge communication. The name with Dest indicates the Queues/Topics which are involved in the message holders.
#JMS BRIDGES CONFIGURATION FOR MQ

numBridges=1

MessagingBridge1=com.my.TestBridge
QualityOfService1=Atmost-once

S_ConnFJNDI=mywlsCF
S_ConnURL=t3://hostname:port
T_ConnURL=file:///mqlocal/jndi/bindings
T_ConnFJNDI=MQCF

S_Dest1=com.mq.bridge.my.Qsrc
S_DestJNDI1=test/outgoing/request
T_Dest1=com.mq.bridge.my.Qdest
T_DestJNDI1=QSRC_TO_QDEST

To execute the above Python script for JMS Bridge configuration can be done as follows:
java weblogic.WLST JmsBridge.py bridge.properties

Scalability for Bridge

After a while working in the project there is new requirement came in to add few more bridges to the existing  Domain. Now my task is that, need to skip those bridges which are existing bridges list and need to create the new bridge only when it is NOT in the list.  To do so I have solution that using Bridge Runtime MBean finding in the run-time domain, pass is keyword to skip them. So need to update the numBrige variable in properies file and append the new bridge details at the end.

The key logic is here...

              # if Bridge already exists skip
                MessagingBridge=getp("MessagingBridge"+str(i))
                print "checking ... ", MessagingBridge
                ref = getMBean("/MessagingBridges/"+MessagingBridge)
                if(ref == None):
                       #create the bridge
                else:
                       pass # skipping

Monitoring Bridges
In WebLogic 11g (10.3.x version) we can only able to fetch the monitoring information about Bridges configured on the domain using weblogic.Admin. The KSH script developed for bridge monitoring status.

Sunday, June 23, 2013

Socket module using WLST

Network Socket with Python/WLST

Internet protocol libraries for Python can be used in WLST. hostname you can use to make most generic for your automation scripts. Use this idea in build and deployment process.

wls:/offline> import socket
wls:/offline> print(socket.gethostname())
pavanb.wlst.by.examples.com

There are many socket related modules and built-in functions available to check we can run dir command on each to know wha is inside that package.
 
wls:/offline> import smtplib
wls:/offline> dir(smtplib)
['CRLF', 'OLDSTYLE_AUTH', 'SMTP', 'SMTPAuthenticationError', 'SMTPConnectError',
 'SMTPDataError', 'SMTPException', 'SMTPHeloError', 'SMTPRecipientsRefused', 'SM
TPResponseException', 'SMTPSenderRefused', 'SMTPServerDisconnected', 'SMTP_PORT'
, 'SSLFakeFile', 'SSLFakeSocket', '__all__', '__doc__', '__file__', '__name__',
'base64', 'encode_base64', 'hmac', 'quoteaddr', 'quotedata', 're', 'rfc822', 'so
cket', 'types']

FTP library in WLST

wls:/offline> import ftplib
wls:/offline> dir(ftplib)
['CRLF', 'Error', 'FTP', 'FTP_PORT', 'MSG_OOB', 'Netrc', '_150_re', '_227_re', '
__all__', '__doc__', '__file__', '__name__', 'all_errors', 'error_perm', 'error_
proto', 'error_reply', 'error_temp', 'ftpcp', 'os', 'parse150', 'parse227', 'par
se229', 'parse257', 'print_line', 'socket', 'string', 'sys', 'test']

Did you ever thought of using FTP from WLST?

IMAPLIB in WLST

wls:/offline> import imaplib
wls:/offline> dir(imaplib)
['AllowedVersions', 'CRLF', 'Commands', 'Continuation', 'Debug', 'Flags', 'IMAP4
', 'IMAP4_PORT', 'Int2AP', 'InternalDate', 'Internaldate2tuple', 'Literal', 'Mon
2num', 'ParseFlags', 'Response_code', 'Time2Internaldate', 'Untagged_response',
'Untagged_status', '_Authenticator', '__all__', '__doc__', '__file__', '__name__
', '__version__', '_cmd_log', '_cmd_log_len', '_dump_ur', '_log', '_mesg', 'bina
scii', 'print_log', 'random', 're', 'socket', 'sys', 'time']
This is implib

telnet Library in WLST

Just for connectivity before create your database connection pools.
wls:/offline> import telnetlib
wls:/offline> dir(telnetlib)
['AO', 'AUTHENTICATION', 'AYT', 'BINARY', 'BM', 'BRK', 'CHARSET', 'COM_PORT_OPTI
ON', 'DEBUGLEVEL', 'DET', 'DM', 'DO', 'DONT', 'EC', 'ECHO', 'EL', 'ENCRYPT', 'EO
R', 'EXOPL', 'FORWARD_X', 'GA', 'IAC', 'IP', 'KERMIT', 'LFLOW', 'LINEMODE', 'LOG
OUT', 'NAMS', 'NAOCRD', 'NAOFFD', 'NAOHTD', 'NAOHTS', 'NAOL', 'NAOLFD', 'NAOP',
'NAOVTD', 'NAOVTS', 'NAWS', 'NEW_ENVIRON', 'NOOPT', 'NOP', 'OLD_ENVIRON', 'OUTMR
K', 'PRAGMA_HEARTBEAT', 'PRAGMA_LOGON', 'RCP', 'RCTE', 'RSP', 'SB', 'SE', 'SEND_
URL', 'SGA', 'SNDLOC', 'SSPI_LOGON', 'STATUS', 'SUPDUP', 'SUPDUPOUTPUT', 'SUPPRE
SS_LOCAL_ECHO', 'TELNET_PORT', 'TLS', 'TM', 'TN3270E', 'TSPEED', 'TTYLOC', 'TTYP
E', 'TUID', 'Telnet', 'VT3270REGIME', 'WILL', 'WONT', 'X3PAD', 'XASCII', 'XAUTH'
, 'XDISPLOC', '__all__', '__doc__', '__file__', '__name__', 'select', 'socket',
'sys', 'test', 'theNULL']
This is having more functions and variables check it...

httplib in WLST for Sanity check

You can use 'httplib' for checking sanity of an application after deployment.
wls:/offline> import httplib
wls:/offline> dir(httplib)
['BadStatusLine', 'CannotSendHeader', 'CannotSendRequest', 'FakeSocket', 'HTTP',
 'HTTPConnection', 'HTTPException', 'HTTPMessage', 'HTTPResponse', 'HTTPS', 'HTTPSConnection', 'HTTPS_PORT', 'HTTP_PORT', 'ImproperConnectionState', 'IncompleteRead', 'InvalidURL', 'LineAndFileWrapper', 'NotConnected', 'ResponseNotReady', 'SSLFile', 'SharedSocket', 'SharedSocketClient', 'StringIO', 'UnimplementedFileMode', 'UnknownProtocol', 'UnknownTransferEncoding', '_CS_IDLE', '_CS_REQ_SENT', '_CS_REQ_STARTED', '_UNKNOWN', '__all__', '__doc__', '__file__', '__name__', 'errno', 'error', 'mimetools', 'socket', 'test', 'urlsplit']
Here, I fond the HTTPLIB example given by Valdmir blog post->Python: HTTP Basic authentication with httplib. Where in the Python script used to do the Sanity test for a provided application URL, which uses the authentication provided using base64 module.

The xmlrpclib library for WLST

This is xmrpclib can be used while interacting with config.xml file. have a look and decide :)
wls:/offline> import xmlrpclib
wls:/offline> dir(xmlrpclib)

['ArrayType', 'Binary', 'Boolean', 'BuiltinFunctionType', 'BuiltinMethodType', 'ClassType', 'CodeType', 'ComplexType', 'DateTime', 'DictProxyType', 'DictType','DictionaryType', 'EllipsisType', 'Error', 'ExpatParser', 'False', 'FastParser',
 'FastUnmarshaller', 'Fault', 'FileType', 'FloatType', 'FrameType', 'FunctionType', 'GeneratorType', 'InstanceType', 'IntType', 'LambdaType', 'ListType', 'LongType', 'MAXINT', 'MININT', 'Marshaller', 'MethodType', 'ModuleType', 'NoneType',
'ObjectType', 'ProtocolError', 'ResponseError', 'SafeTransport', 'Server', 'ServerProxy', 'SgmlopParser', 'SliceType', 'SlowParser', 'StringType', 'StringTypes', 'TracebackType', 'Transport', 'True', 'TupleType', 'TypeType', 'UnboundMethodT
ype', 'UnicodeType', 'Unmarshaller', 'WRAPPERS', 'XRangeType', '_Method', '__doc__', '__file__', '__name__', '__version__', '_decode', '_stringify', 'binary', 'boolean', 'classDictInit', 'datetime', 'dumps', 'escape', 'getparser', 'loads','operator', 're', 'string', 'time']

Saturday, June 15, 2013

SOA & ADF Bounce script


We were working on SOA doamin for automation with WLST. After woring on the retiring and activation  of  the composites of SOA_Infra we are ready for shutdown the managed servers. Now the task is simple we have break-down the task into two simple functions.

  1. stop the cluster
  2. start the cluster
  3. Main program
Here the main program uses the logic of fetching the cluster list from the admin server. The functions are made in such a way that each cluster control operation can be tracked with state command, that will tell about all the managed servers in the cluster state. Once we did a trial found that there could be some time required for shutdown the managed servers. Double checked the state with Console as well. Re-run the same script with the menu option to start the Cluster.

Here NodeManager is independently running on each machines where the cluster spread across the  managed servers are running. So, this script only controls the clustered managed servers.

You can extend the same script to turn down the Admin server as well. after cluster down you can have that action. The command is shutdown('AdminServer', 'Server')



If you want more stories on the automation go thru the recommended book!
  
#====================================
# Stop all instances of a Cluster 
#====================================
def stopClstr(clstrName):
 try:
  shutdown(clstrName,"Cluster")
  java.lang.Thread.sleep(25000)
  state(clstrName,"Cluster")
 except Exception, e:
  print 'Error while shutting down cluster ',e
 
#====================================
# Startp all instances of a Cluster 
#====================================
def startClstr(clstrName):
 try:
  start(clstrName,"Cluster")
  state(clstrName,"Cluster")
 except Exception, e:
  print 'Error while shutting down cluster ',e
 

if __name__== "main":
 connect('weblogic','welcome1','t3://localhost:7001')
        print "1.To Stop Instances"
        print "2.To Start Instances"
        print "3.Exit from Menu"
        ch=input('Enter Your Choice: ')
 cd("Clusters")
 clstrList=ls(returnMap='true')
 if ch== 1 :
  for clstr in clstrList:
   stopClstr(clstr)
 elif ch == 2 :
  for clstr in clstrList:
   startClstr(clstr)
 else:
  exit()

SOA Retire Activate Composites


Why we need retire and activate composites?

Before you go for bouncing the SOA Suite Domain which contains SOA, ADF Clusters with multiple managed servers, where each Weblogic server hosted all the sessions which are in execution state on them must be persisted to a restore further when Servers back to RUNNING state. To make this possible we need to use the retire composites and then after RUNNING servers bring them back to activate state for service.

Here is a sample trail script where the SOA application composites management. Here you need to navigate to the wlst.sh or cmd path. To access SCA function you must start WLST from /common/bin. When trying to run the SOA WLST command from regular 'java weblogic.WLST' cannot execute the SCA functions. When you try to execute the sca_retireComposite() it could throw the 'NameError'. So the cause is started WLST from the wrong location, to avoid that our PATH is to change and run the script from the following path: $SOA_ORACLE_HOME/common/bin/wlst.sh will work on Unix/Linux environments. Similarly you choose for Windows environment instead of using executing the shell script you need to use 'call' in the batch script.

Here the major task we have proceeding with the following two functions.

  1. Retire is to retire the composites .
  2. Activate is to activate the composites.
loadProperties('/user/test/scripts/composites.properties')
def retireComposites(Soahost,port, username,password,scacompositename, ver):
        sca_retireComposite(Soahost, port, username, password, scacompositename, revision=ver, partition='default') 
def activateComposites(Soahost,port, username,password,scacompositename, ver):
        sca_activateComposite(Soahost, port, username, password, scacompositename, revision=ver, partition='default')
if __name__== "main":
        print "1.To retire composites"
        print "2.To activate composites"
        print "3.Exit from Menu"
        ch=input('Enter Your Choice: ')
        f=open('/user/test/scripts/composites.txt','r')
        if ch== 1 :
                for c in f:
                        c=c.rstrip('\n')
                        retireComposites(Soahost,port, username,password,c, ver)
        elif ch == 2 :
                for c in f:
                        c=c.rstrip('\n')
                        activateComposites(Soahost,port, username,password,c, ver)
        else:
                exit()
        f.close()

Here is the composite.txt sample, where you can specify your composites configured in the SOA partition. Which are usually visible on enterprise manager(em) console. Oracle must given a easy module for displaying the deployed SCA composites list. Anyway we have stored in a separate file as shown below. You have flexibility of changing the order when you use this composite.txt file.

B2B_BPEL_TEST_Sub_reccive
B2B_BPEL_TIBCO_PUB_invoke

The actual trouble started when we tried to use a separate composite.txt file. each line can be read and the value always having at the end an EOL ( \n ). To supress that escape sequance we have used python scring function rtrip function.

The regular properties file which is loaded on the fist line can be created as follows:


Soahost=localhost
port=8001
username=weblogic
password=welcome1
ver=1.0



Please share this with your friends and collegues, comment if you already tried or successfully implemented on your SOA environment.

Video References:

Iris Li demonstrates how to deploy a SOA composite application using the Oracle Enterprise Manager 11g

SOA Composites references :

Sunday, April 14, 2013

Self-tuned Thread Pool Count


-->
Thread Pool count will give you the idea about the WebLogic Server instance throughput. First let us see how to monitor a server instance with WLST. if you provide the instance name the script will search the corresponding listen address, listen port for that instances then forms a URL using t3 protocal(WebLogic specific protocol) which is used to connect the instance and get the serverRuntime MBean which will contains that servers ThreadPoolRuntime.

Hogging Threads
Hogging Threads that have taken the too much time and we can assume that they are never going to come back. Hogging threads help us take some decisions, lets say many threads are hogging, we may take a decision to create new threads for next cycle.
My understanding about Thread States in WebLogic Server:
  1. ACTIVE
  2. STUCK
  3. STANDBY
A live thread which is ready to process the request, which is known as ACTIVE state. That is indicated when therad newly created. WebLogic Server start the server instance with 1 ACTIVE thread and the thread count grows as per the min size if specified other wise it will do self-tune as per the request.

Threads might wait for other thread to release resource. This might happen due to application varialbles. The variables are 2 types thread-safe other is risk for thread. All local variables in the methods are thread-safe. The variable defined in class level are unsafe. which causes memory leak, this state of threads are known as hogging. WebLogic identify a thread as hog by the time interval. If thread is waiting more than 600 sec will be treated as hog. STUCKthread interval we can tune as per the project need.

animations
If the number of HoggingThreadCount increases then the server health is in dangerous. That time you can take the ThreadDump
After Threads increase to a max utilization then the thread will be in STANDBY state.

Let us see the following script will get the Thread statistics for a given Weblogic server instance.


# This script is for single instance thread statistics
# You can enhance it further to take thread dump as per your env.

import sys
from java.util import Date

ucf='scriptpath/userConfigFile.sec'
ukf='scriptpath/userKeyFile.sec'
ECODE='\n \033[0m' # ending of color code

def ThreadCnt():
    try:
        print 'Connecting to Admin server....'
        connect(userConfigFile=ucf, userKeyFile=ukf, url='t3://admindns:port')
    except:
        print 'Admin Server NOT in RUNNING state....'
    urldict={}
    serverlist=getRunningServerNames()  # Getting Serverlist
    for svr in serverlist:
        cd("/Servers/"+svr.getName())
        urldict[svr.getName()]='t3://'+get('ListenAddress')+':'+str(get('ListenPort'))

    x = raw_input('Enter a server instance name : ')
    try:
        connect(userConfigFile=ucf, userKeyFile=ukf,url=urldict[x])
        serverRuntime()
        openSocks = cmo.getOpenSocketsCurrentCount();
        print('Open Sockets:: ' + str(openSocks));
        cd('serverRuntime:/ThreadPoolRuntime/ThreadPoolRuntime/')
        compReq = cmo.getCompletedRequestCount()
        status = cmo.getHealthState()
        hoggingThreads = cmo.getHoggingThreadCount()
        totalThreads = cmo.getExecuteThreadTotalCount()
        idleThrds = cmo.getExecuteThreadIdleCount()
        pending = cmo.getPendingUserRequestCount()
        qLen = cmo.getQueueLength()
        thruput = cmo.getThroughput()
        if idleThrds == 0:
            pstr='\033[1;47;31m'    # RED color
        else:
            pstr='\033[1;40;32m'    # GREEN color
        print(pstr+'Status of the Server: ' + str(status)  +ECODE
            +'The completed Requests: ' + str(compReq) +ECODE'
            +'Total the threads no s: ' + str(totalThreads)+ECODE
            +'The Idle threads: ' + str(idleThrds)+ECODE
            +'Hogging threads : ' + str(hoggingThreads)+ECODE
            +'Pending : ' + str(pending)+ECODE
            +'ThreadPool QueueLength: ' + str(qLen)+ECODE
            +'Server (Throughput): ' +str(thruput)+ECODE)
    except:
        print 'Exception... Unable to connect to given Server', x
        pass
    quit()

def quit():
    d = Date() # now
    print  d
    print '\033[1;40;32mHit any key to Re-RUN this script ...'+ECODE
    Ans = raw_input("Are you sure Quit from WLST... (y/n)")
    if (Ans == 'y'):
         disconnect()
        stopRedirect()
        exit()
    else:
        ThreadCnt()

def getRunningServerNames():
    domainConfig()
    return cmo.getServers()

if __name__== "main":
    redirect('./logs/ThreadCntwlst.log', 'false')
    ThreadCnt()
    print 'done'




WebLogic Server Health Status can be one of the following:

  1. HEALTH_OK
  2. HEALTH_WARN
  3. HEALTH_FAILED
  4. HEALTH_CRITICAL
  5. LOW_MEMORY_REASON
  6. HEALTH_OVERLOADED

OK is indicates everything fine, no worries!!

WARN raised when there is few stuck threads in the server instance.

LOW_MEMORY_REASON is going to tell you about JVM crash expected. You can configure to 'Exit' the managed server on low memory conditions with the help of NodeManager and WorkManager.

CRITICAL when multiple number of stuck threads happening and the threadpool count reaching unsual number. This case you need to suspect Network, JDBC or back-end connectivity has trouble.
FAILED happen when the new deployments fails. The NodeManager should not restart this managed server.

OVERLOADED Change the server health state to OVERLOADED on overload. The Nodemanager need to work at this state and bounce such WebLogic instance. This is a new feature of WebLogic 9.x and later versions, for detecting, avoiding and recovering from an overload condition of a WebLogic managed server. Overload protection can be used to throttle Work Managers and thread pools for performance. You can configure Shutdown the Work Manager or application on stuck threads when it crosss more than 5 or you can set threshold.
-->

Good Reference links:

http://forums.oracle.com/forums/thread.jspa?threadID=683752

Thursday, April 11, 2013

Home

Do you know this fun thing about Python scripting sing a poem of quotations just by by importing 'this' module.
wls:/offline> import this
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!
wls:/offline>

Content

You are invited for the contribution of WLST scripts and articles.

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Saturday, March 2, 2013

JMS Foreign Server

What is Foreign Servers?

Foreign JMS servers can be used as a stand-alone component, similar to messaging bridges. These components  target application servers or clusters directly instead of an intermediary component like a JMS server.

Bridges vs Foreign Server


The JMS messaging bridge does introduce with an extra hop; messages are put into a local destination and then forwarded to the final destination. This is useful when the remote destination is not on highly available JEE container. The bridge will take the messages even when remote destination is not available and then forward them with build-in retry logic when the remote destination becomes available.

If the remote destination is highly available (WebLogic JMS or IBM MQ Series), foreign JMS server is preferable since it directly access the final destination without an extra hop. Mostly preferable for incoming queues on WebLogic 11g and later releases.

Best practices for Foreign Servers


Our best practices were centered around the standard of creating a single JMS Module per cluster (or app server if it wasn't clustered) and then creating both the Foreign server and the weblogic JMS queues/connection factories within the same module.
Also, having good naming conventions for your sub-deployments and JMS Modules

How does Weblogic Foreign Server works with external messaging system?


Configuring Foreign server on JMS Module

Foreign Server feature makes it possible to easily map to remote instances of WebLogic Server in another cluster or domain. so that they appear in the local JNDI tree as a local JMS object. Once the Foreign Provider is configured within Weblogic, for all practical JMS implementations within the code - it can be called as if it was on local JNDI lookup. Weblogic will make the remote calls transparent to your code. This allows you to change your destination via configuration on the Weblogic console or thru WLST.

Working in WLST, We need to connect to the Admin Server because this configuration changes can be done in online mode.
##################################
# FOREIGN JMS MODULE CONFIGURATION
##################################
fsjms_mod_name1=aFSmod
 
fr_server1=ForeignServer1
cnfurl1=file:/path/mq/bindings 
initialContextFactory1=com.sun.jndi.fscontext.RefFSContextFactory




Create JMS Module for Foreign Servers
 With the WebLogic 11g and later releases, Oracle has tried to merge both the internal and foreign JMS under a universal umbrella. However, the target options were kept different. To provide flexibility with the JMS portion, sub-deployments were introduced. Oracle seems to have been extended sub-deployments to Foreign Servers for the sake of consistency, making things quite complicated/messy.
WebLogic Foreign Server - IBM MQ 

Create JMS Foreign Server
This we can configure with the help of three arguments -There must be single JMS Module name per cluster, Multiple definitions of your connection factory will skew the JMS load-balancing.
  1. Connectiony Factory URL
  2. Foreign Server name
  3. Initial Context

Foreign Server MBean
JMS Foreign server is parent MBean with Foreign Connection Factory and Foreign Destination as childs.
Foreign Server MBean tree

The foreign JMS provider can be targeted to a WebLogic Server or a WebLogic Cluster.
Create JMS Foreign Destination
Create JMS Foreign Connection Factory

JMS Foreign Server Destination can be configured with the following details

  • Destination Name
  • Local JNDI
  • RemoteJNDI

The destination properties can be given as follows:

###############################################
# FOREIGN JMS DESTINATION CONFIGURATION
###############################################
destname1=ForeignDestination1
dest_ljndi1=mq/incoming/response
dest_rjndi1=MQSRC_TO_WL_JMS1

Similarly Foreign Connection Factory can be defined with the MQ connection factory details
###############################################
# FORIEGN JMS CONNECTION FACTORY CONFIGURATION
###############################################
fconf_name1=ForeignConnectionFactory1
fconf_ljndi1=MqConnectionFactory
fconf_rjndi1=REMOTE_JNDI1

create_ForeignServer.py

 
from java.io import File
from java.io import FileOutputStream
from java import io
from java.lang import Exception
from java.lang import Throwable
import os.path
 
import sys
 
def getJMSModulePath(jms_module_name):
        jms_module_path = "/JMSSystemResources/"+jms_module_name+"/JMSResource/"+jms_module_name
        return jms_module_path
 
def createFSJMSModule(jms_module_name,target_name):
        cd('/')
        module = create(jms_module_name, "JMSSystemResource")
        cluster = getMBean("Clusters/"+cluster_target_name)
        module.addTarget(cluster)
 
def createJMSFS(jms_module_name,cnurl,jms_fs_name,ini_fac):
        jms_module_path = getJMSModulePath(jms_module_name)
        cd(jms_module_path)
        cmo.createForeignServer(jms_fs_name)
        cd(jms_module_path+'/ForeignServers/'+jms_fs_name)
        cmo.setInitialContextFactory(ini_fac)
        cmo.setConnectionURL(cnurl)
        cmo.setDefaultTargetingEnabled(bool("true"))
        cmo.unSet('JNDIPropertiesCredentialEncrypted')
 
def getFSpath(jms_module_name,jms_fs_name):
        jms_module_path = getJMSModulePath(jms_module_name)
        jms_fs_path = jms_module_path+'/ForeignServers/'+jms_fs_name
        return jms_fs_path
 
def createFSdest(jms_module_name,jms_fs_name,jms_dest_name,ljndi,rjndi):
        cd('/')
        jms_fs_path = getFSpath(jms_module_name,jms_fs_name)
        cd(jms_fs_path)
        print jms_fs_path
        cmo.createForeignDestination(jms_dest_name)
        jms_fs_path=jms_fs_path+'/ForeignDestinations/'+jms_dest_name
        print jms_fs_path
        cd(jms_fs_path)
        cmo.setLocalJNDIName(ljndi)
        cmo.setRemoteJNDIName(rjndi)
 
def createFSconf(jms_module_name,jms_fs_name,jms_fconf_name,cljndi,crjndi):
        jms_fs_path = getFSpath(jms_module_name,jms_fs_name)
        cd(jms_fs_path)
        cmo.createForeignConnectionFactory(jms_fconf_name)
        cd(jms_fs_path+'/ForeignConnectionFactories/'+jms_fconf_name)
        cmo.setLocalJNDIName(cljndi)
        cmo.setRemoteJNDIName(crjndi)
############## MAIN SCRIPT starts  ##########
envproperty=""
if (len(sys.argv) > 1):
        envproperty=sys.argv[1]
else:
    print "Environment Property file not specified"
    sys.exit(2)
propInputStream=FileInputStream(envproperty)
configProps=Properties()
configProps.load(propInputStream)
 
adminUser=configProps.get("adminUser")
adminPassword=configProps.get("adminPassword")
adminURL=configProps.get("adminURL")
 
connect(adminUser,adminPassword,adminURL)
 
edit()
startEdit()
 
##############################################
#FOREIGN JMS SERVER CONFIGURATION
##############################################
total_dest=configProps.get("total_dest")
total_fconf=configProps.get("total_fconf")

cluster_target_name=configProps.get("clusterName")
 
trg=configProps.get("ForeignTargetServer")
fs_mod_name=configProps.get("fsjms_mod_name")
createFSJMSModule(fs_mod_name,trg)
 
n= int(tot_fs)
for i in range(1,n+1):
        fr_server=configProps.get("fr_server"+ str(i))
        cnfurl=configProps.get("cnfurl"+ str(i))
        ini_context=configProps.get("initialContextFactory"+ str(i))
        createJMSFS(fs_mod_name,cnfurl,fr_server,ini_context)
 
        d_name=configProps.get("destname"+ str(i))
        d_ljndi=configProps.get("dest_ljndi"+ str(i))
        d_rjndi=configProps.get("dest_rjndi"+ str(i))
        print d_ljndi,' == ', d_rjndi, b
        createFSdest(fs_mod_name,fr_server,d_name,d_ljndi,d_rjndi)
 
        fr_server=configProps.get("fr_server"+ str(i))
        j_conf=configProps.get("fconf_name"+ str(i))
        cn_ljndi=configProps.get("fconf_ljndi"+ str(i))
        cn_rjndi=configProps.get("fconf_rjndi"+ str(i))
        createFSconf(fs_mod_name,fr_server,j_conf,cn_ljndi,cn_rjndi)
 
# ####   MAIN SCRIPT END ########################################
save()
activate(block="true")
disconnect()
This script is generic you can add as many foreign server as you wish. You can better use it for receive the message with foreign servers that are having source at remote location. It could be connect to WebLogic JMS or it can connect to third party messaging servers such as MQ series or ActiveMQ etc. You can execute the script as follows:
$ java weblogic.WLST Foreign_jms.py ForeignJms.properties

References:

JMS Foreign Server MDB

Oracle doumentation on Foreign Server creation
  1. MQ Series 2 WebLogic
  2. WebLogic 10.3 with IBM MQ
  3. Jsure blog on WebLogic MQ

Thursday, January 31, 2013

JMS Module Uniform Distributed Queue using WLST


This post is continous series of JMS configurations experimenting with Python. Here the JMS module configuration changes for the JMS will be stored to config.xml repository and its sub-deployment module descriptor in a separate file. JMS system module can be defined with name, target to servers or cluster, its related sub-deployments such as Queue or publisher/Subscriber topics.

The WebLogic JMS related Mbeans are constructed as follows :
  • JMSBean
  • JMSSystemReourceMBean
  • QueueBean
  • JMSConnectionFactoryBean
  • DistributedQueueBean
  • UniformDistributedQueueBean
  • SubdeploymentMBean

While configuring you need to understand that JMS system module, that consists of ConnectionFactory that give access to the JMS services, and there could be a different scenario on demand. The machines are high-powered, low powered are in the same cluster then JMS destinations must be distributed destinations with ‘Allocate members Uniformly’ option set to false and manually select more physical destination from the high powered machines.The configuring JMS module is going to have various sub-deployment components in it. First we need to configure the JMS Module name, target to the advanced deployment as sub-deployment. 


Now you need brainstrom, and provide your customized domain with JMS module details in the properties file, let me give you sample :
############################################################################### 
# JMS MODULE CONFIGURATION
############################################################################### 
total_default_jms_module=1
jms_mod_name1=jmsSystemModule
jms_mod_target1=my_cluster

Subdeployment in JMS Module

Most of the Admins not really aware of the use of subdeployment. We need to configure a subdeployment per JMS Module. While configuring the subdeployment we have to provide the target as JMS servers which are configured in the first section. Why we need a subdeployment is interesting topic  • To avoid network traffic between JMS components communication • It will group Connection factories, queues, topics

 • Easy to migrate
WebLogic - JMS Module configuration using WLST

###############################################################################
# JMS SUBDEPLOY CONFIGURATION
###############################################################################
total_subdply=1
subdeployment_name=aJmssub

JMS Connection Factory

We have configured the ConnectionFactory properties as follows
###############################################################################
# JMS CONNECTION FACTORY CONFIGURATION
##########
conf_jndi1=myConnectionFactory
conf_name1=MyConnectionFactory
Configuring Uniform distributed queue using WLST We have configured the Queue with Distributed option because we have multiple JMS providers. The Uniform Distributed Queue is the one of the best practice when you have Clustered WebLogic Domain. While configuring this you need a name for the Uniform Distributed Queue and a JNDI name for it.
###############################################################################
#   UNIFORM DISTRIBUTED QUEUE CONFIGURATION
###############################################################################
total_udq=3
udq_name1=jmsIncomingChannel
udq_jndi1=jms/incoming/response
The JMS Module configuration with Subdeployment target to JMS Servers configured earlier. ConnectionFactory, Uniform Distributed Queue target to subdeployment.
from java.util import Properties
from java.io import FileInputStream
from java.io import File
from java.io import FileOutputStream
from java import io
from java.lang import Exception
from java.lang import Throwable
import os.path
import sys

envproperty=""
if (len(sys.argv) > 1):
        envproperty=sys.argv[1]
else:
        print "Environment Property file not specified"
        sys.exit(2)
propInputStream=FileInputStream(envproperty)
configProps=Properties()
configProps.load(propInputStream)

def createJMSModule(jms_module_name,cluster_target_name):
        cd('/JMSServers')
        jmssrvlist=ls(returnMap='true')
       # jmssrvlist=['AjmsServer1','AjmsServer2']
        cd('/')
        module = create(jms_module_name, "JMSSystemResource")
        cluster = getMBean("Clusters/"+cluster_target_name)
        module.addTarget(cluster)
        cd('/SystemResources/'+jms_module_name)

        module.createSubDeployment(subdeployment_name)
        cd('/SystemResources/'+jms_module_name+'/SubDeployments/'+subdeployment_name)
        list=[]
        for j in jmssrvlist:
                s='com.bea:Name='+j+',Type=JMSServer'
                list.append(ObjectName(str(s)))
        set('Targets',jarray.array(list, ObjectName))


def getJMSModulePath(jms_module_name):
        jms_module_path = "/JMSSystemResources/"+jms_module_name+"/JMSResource/"+jms_module_name
        return jms_module_path

def createJMSTEMP(jms_module_name,jms_temp_name):
        jms_module_path= getJMSModulePath(jms_module_name)
        cd(jms_module_path)
        cmo.createTemplate(jms_temp_name)
        cd(jms_module_path+'/Templates/'+jms_temp_name)
        cmo.setMaximumMessageSize(20)

def createJMSUDQ(jms_module_name,jndi,jms_udq_name):
        jms_module_path = getJMSModulePath(jms_module_name)
        cd(jms_module_path)
        cmo.createUniformDistributedQueue(jms_udq_name)
        cd(jms_module_path+'/UniformDistributedQueues/'+jms_udq_name)
        cmo.setJNDIName(jndi)
    #    cmo.setDefaultTargetingEnabled(bool("true"))
        cmo.setSubDeploymentName(subdeployment_name)

def createJMSConnectionFactory(jms_module_name,cfjndi,jms_cf_name):
        jms_module_path = getJMSModulePath(jms_module_name)
        cd(jms_module_path)
        cf = create(jms_cf_name,'ConnectionFactory')
        jms_cf_path = jms_module_path+'/ConnectionFactories/'+jms_cf_name
        cd(jms_cf_path)
        cf.setJNDIName(cfjndi)
        cd (jms_cf_path+'/SecurityParams/'+jms_cf_name)
        #cf.setAttachJMXUserId(bool("false"))
        cd(jms_cf_path+'/ClientParams/'+jms_cf_name)
        cmo.setClientIdPolicy('Restricted')
        cmo.setSubscriptionSharingPolicy('Exclusive')
        cmo.setMessagesMaximum(10)
        cd(jms_cf_path+'/TransactionParams/'+jms_cf_name)
        #cmo.setXAConnectionFactory(bool("true"))
        cd(jms_cf_path)
        cmo.setDefaultTargetingEnabled(bool("true"))

adminUser=configProps.get("adminUser")
adminPassword=configProps.get("adminPassword")
adminURL=configProps.get("adminURL")

connect(adminUser,adminPassword,adminURL)

edit()
startEdit()

 # ====# JMS CONFIGURATION## ##########################################
total_temp=configProps.get("total_temp")
total_udq=configProps.get("total_udq")
total_conf=configProps.get("total_conf")
tot_djmsm=configProps.get("total_default_jms_module")
subdeployment_name=configProps.get("subdeployment_name")

a=1
while(a <= int(tot_djmsm)):
        var1=int(a)
        jms_mod_name=configProps.get("jms_mod_name"+ str(var1))
        cluster=configProps.get("jms_mod_target"+ str(var1))
        createJMSModule(jms_mod_name,cluster)
        i=1

        while(i <= int(total_temp)):
                t_name=configProps.get("temp_name"+ str(i))
                createJMSTEMP(jms_mod_name,t_name)
                i = i + 1

        j=1
        while(j <= int(total_udq)):
                udq_name=configProps.get("udq_name"+ str(j))
                udq_jndi=configProps.get("udq_jndi"+ str(j))
                createJMSUDQ(jms_mod_name,udq_jndi,udq_name)
                j = j + 1
        k = 1
        while(k <= int(total_conf)):
                conf_name=configProps.get("conf_name"+ str(k))
                conf_jndi=configProps.get("conf_jndi"+ str(k))
                createJMSConnectionFactory(jms_mod_name,conf_jndi,conf_name)
                k = k + 1
        a = a+1

save()
activate(block="true")
disconnect()
############################################################

The properties listed for sample here
###############################################################################
# JMS SUBDEPLOY CONFIGURATION
###############################################################################
total_subdply=1
total_default_jms_module=1
total_conf=1
subdeployment_name=demoSub

###############################################################################
# JMS CONNECTION FACTORY CONFIGURATION
######################################################
conf_jndi1=demoCF
conf_name1=jms/demoCF

###############################################################################
#   UNIFORM DISTRIBUTED QUEUE CONFIGURATION
###############################################################################
 

total_temp=0
total_udq=2
udq_name1=jmsIncomingChannel
udq_jndi1=jms/incoming/response
temp_name1=jmsIncomingChannel1

udq_name2=jmsOutgoingChannel
udq_jndi2=jms/outgoing/response
temp_name2=jmsOutgoingChannel1

adminUser=weblogic
adminPassword=welcome1
adminURL=t3://192.168.1.106:8100
###############################################################################
# JMS MODULE CONFIGURATION
###############################################################################
total_default_jms_module=1
jms_mod_name1=demo_jmsmod
jms_mod_target1=democlstr

To execute this JMS Module with subdeployments you need to pass the properties file as argument
java weblogic.WLST jms_module.py jms_module.properties
pavanbsd@ubuntu:~/pybin$ wlst jmsmodnq.py jmsmodnq.properties

Initializing WebLogic Scripting Tool (WLST) ...

Welcome to WebLogic Server Administration Scripting Shell

Type help() for help on available commands

Connecting to t3://192.168.1.106:8100 with userid weblogic ...
Successfully connected to Admin Server "demoadmin" that belongs to domain "demodomain".

Warning: An insecure protocol was used to connect to the
server. To ensure on-the-wire security, the SSL port or
Admin port should be used instead.

Location changed to edit tree. This is a writable tree with
DomainMBean as the root. To make changes you will need to start
an edit session via startEdit().

For more help, use help('edit')
You already have an edit session in progress and hence WLST will
continue with your edit session.

Starting an edit session ...
Started edit session, please be sure to save and activate your
changes once you are done.
drw-   jms_ms1
drw-   jms_ms2

MBean type JMSSystemResource with name demo_jmsmod has been created successfully.
MBean type ConnectionFactory with name jms/demoCF has been created successfully.
Saving all your changes ...
Saved all your changes successfully.
Activating all your changes, this may take a while ...
The edit lock associated with this edit session is released
once the activation is completed.
Activation completed
Disconnected from weblogic server: demoadmin

Keep writing your comments and suggestions on this post. cheers!!

Friday, January 25, 2013

JMS Server Configuration using WLST

Most of the message orient middleware architecture designs, while preparing the proof of concept for a new business domain they need to do multiple trails and errors. Configuring for such system resource task can be simplified with Python script. is one of the phases on other hand is setting up the thresholds and quota is next phase.
WebLogic  -  JMS Servers with File Store

Before entering into the scripting let us have brief JMS details, the basic types of JMS message communications are two:

  •  Point to Point (PTP) 
  • Publisher/Subscriber (Pub/Sub)
WLST JMS Server configuration
Usually JEE development lead or architect decides which kind of messaging could be suitable for the application. Once you got the “Sign-off” for the communication mechanism, the Middleware admin will be configuring the JMS system resources.
I like Jeff West video presentation about JMS Servers and their usage with uniform distributed Queue, Topic and newly introduced Partitioned distribution. For your reference embedding the video here.


Initially, we need a JMS persistence store configuration using WLST script, that enables you to configure as many JMS servers and persistence stores as required for an application deployment. The persistence store can be created with File Store or JDBC store options. As per your domain requirement you can specify the total number in the properties file. Suppose Architect team decided to use only File Stores then we can set 0 to JDBC total store so that the loop will be disabled for that.


What we do for JMS configuration using WLST?

The base JMS configuration is going to involve the following: a. Persistence store creation with Files: For each managed server where JMS servers configured there we need to create a File store. As best practice we create a dedicated folder where all the filestores can be stored per machine. Use the same directory structure for all machines where the filestores configured. b. Persistence store with JDBC: This we can use when your JMS message persistence requires huge message sizes. c. JMS server : we need to configure as many JMS servers as managed servers involve in JMS messaging
from java.util import Properties
from java.io import FileInputStream
from java.io import File
from java import io
from java.lang import Exception
from java.lang import Throwable
import os.path
import sys

def createFlstr(fstr_name,dir_name,target_name):
        cd('/')
        fst = create(fstr_name, "FileStore")
        cd('/FileStores/'+fstr_name)
        cmo.setDirectory(dir_name)
        fst.addTarget(getMBean("/Servers/"+target_name))

def createJDstr(jstr_name,ds_name,target_name,prefix):
        cd('/')
        jst = create(jstr_name, "JDBCStore")
        cd('/JDBCStores/'+jstr_name)
        cmo.setDataSource(getMBean('/SystemResources/'+ds_name))
        cmo.setPrefixName(prefix)
        jst.addTarget(getMBean("/Servers/"+target_name))

def createJMSsrvr(jms_srv_name,target_name,persis_store,page_dir, thrs_high, thrs_low, msg_size):
        cd('/')
        srvr = create(jms_srv_name, "JMSServer")
        cd('/Deployments/'+jms_srv_name)
        srvr.setPersistentStore(getMBean('/FileStores/'+persis_store))
#       srvr.setPersistentStore(getMBean('/JDBCStores/'+persis_store))
        srvr.setPagingDirectory(page_dir)
        srvr.addTarget(getMBean("/Servers/"+target_name))
        srvr.setBytesThresholdLow(long(thrs_low))
        srvr.setBytesThresholdHigh(long(thrs_high))
        srvr.setMaximumMessageSize(long(msg_size))

envproperty=""
if (len(sys.argv) > 1):
    envproperty=sys.argv[1]
else:
    print "Environment Property file not specified"
    sys.exit(2)
propInputStream=FileInputStream(envproperty)
configProps=Properties()
configProps.load(propInputStream)

adminUser=configProps.get("adminUser")
adminPassword=configProps.get("adminPassword")
adminURL=configProps.get("adminURL")

connect(adminUser,adminPassword,adminURL)

edit()
startEdit()

#=============# JMS SERVER and PERSISITENT STORE CONFIGURATION #=============#
total_fstore=configProps.get("total_fstore")
#total_jstore=configProps.get("total_jstore")
total_jmssrvr=configProps.get("total_jmssrvr")

j=1
while (j <= int(total_jmssrvr)):
        jms_srv_name=configProps.get("jms_srvr_name"+ str(j))
        trg=configProps.get("jms_srvr_target"+ str(j))
        persis_store=configProps.get("jms_srvr_persis_store_name"+str(j))
        page_dir=configProps.get("jms_srvr_pag_dir"+str(j))
        thrs_high=configProps.get("jms_srvr_by_threshold_high"+str(j))
        thrs_low=configProps.get("jms_srvr_by_threshold_low"+str(j))
        msg_size=configProps.get("jms_srvr_max_msg_size"+str(j))
        createFlstr(persis_store,page_dir,trg)
        createJMSsrvr(jms_srv_name,trg,persis_store,page_dir,thrs_high,thrs_low,msg_size)
        j = j+1
#==========================================================================================#
save()
activate()
To execute this script you need to workout on your properties file, indentation in the script.
$ java weblogic.WLST jms_servers.py jms_servers.properties

Generic advantage of this Script

Here most important thing is that when you wish that the persistance store could be a filestore then, it requires file path, if you are giving in the properties file assign absoulute path.
Sample properties file here
adminUser=weblogic
adminPassword=welcome1
adminURL=t3://192.168.1.106:8100
total_fstore=2
total_jmssrvr=2

jms_srvr_name1=jms_ms1
jms_srvr_target1=ms1
jms_srvr_persis_store_name1=jms_ms1_fs
jms_srvr_pag_dir1=/home/wlsdomains/demodomain/fs
jms_srvr_by_threshold_high1=10
jms_srvr_by_threshold_low1=5
jms_srvr_max_msg_size1=512

jms_srvr_name2=jms_ms2
jms_srvr_target2=ms2
jms_srvr_persis_store_name2=jms_ms2_fs
jms_srvr_pag_dir2=/home/wlsdomains/demodomain/fs
jms_srvr_by_threshold_high2=10
jms_srvr_by_threshold_low2=5
jms_srvr_max_msg_size2=512

Tuesday, January 8, 2013

Cluster manuplation with WLST

There could be situations where you might have seen this. such as in production environment one of the site will be decommissioned. All the site member machines hosting WebLogic Managed Servers will be kicked out of domain. finally the cluster will be removed.

In some cases your production environment might having business enhancement plans, so that there could be new geographical site will be added to to existing running domain then, there would be need of cluster or clusters addition to the domain and respective managed servers all added to it.

Here I got a thought that why don't we make a WLST script that will give you option of High Availability(HA) with above said options as well additon to it addtion of managed server and removal of managed servers.

OEPE is giving ready made scripts so I thought this would be easy to implement the logic.

Designing WebLogic Cluster

First you need to identify type of the cluster you need to implement. Single WebLogic Cluster can serve the minimum size of business requests. You need to identify the number of the server required on a cluster. You can choose Multi-tier cluster where you can have dedicated cluster for each service. After experiancing many production issues identified what all the configuration changes that makes standard and easy to handle the troubleshooting in production environments are collected and compiled as "Best practices" implementation for Managed server configuration with Jython script.

1. Log LEVELwith best suitable attributes
2. Log rotation for managed servers
3. Threadpool size settings with WLST
4. Diagnostic framework enabling with WLST

from java.util import *
from java.io import FileInputStream
from javax.management import *
import javax.management.Attribute
import sys

envproperty=""
if (len(sys.argv) > 1):
 envproperty=sys.argv[1]
else:
 print "Environment Property file not specified"
 sys.exit(2)

propInputStream=FileInputStream(envproperty)
configProps=Properties()
configProps.load(propInputStream)

def getp(x):
 """ This function will be used to fetch the properties file"""
        return configProps.get(x)
 

def logLevel(ms, k):
 lg = ms.getLog()
 lg.setFileName(''+domainHome+'/logs/bea/ms'+str(k)+'_'+domainName+'.log')
 lg.setLogFileSeverity('Info')
 lg.setRotationType('byTime')
 lg.setRotationTime("23:59")
 lg.setFileTimeSpan(24)
 lg.setDomainLogBroadcastSeverity('Error')
 lg.setMemoryBufferSeverity('Error')
 lg.setRedirectStdoutToServerLogEnabled(true)
 lg.setRedirectStderrToServerLogEnabled(true)
 lg.setStdoutSeverity('Error')
 
def setDiagnostics(ms, k):
 svrdiag = ms.getServerDiagnosticConfig()
 svrdiag.setDiagnosticContextEnabled(false)
 svrdiag.setDiagnosticStoreDir(''+domainHome+'/logs/store/diagnostics/ms'+str(k)+'_'+domainName+'/')

 defFileStore = ms.getDefaultFileStore()
 defFileStore.setDirectory(''+domainHome+'/logs/store/default/ms'+str(k)+'_'+domainName+'/')
  
 hvDataRetire = svrdiag.createWLDFDataRetirementByAge("HarvestDataRetirePolicy")
 hvDataRetire.setArchiveName(""+getp("ms_harvesarchivename")) 
 hvDataRetire.setEnabled(bool(getp("ms_harvesenabled")))
 hvDataRetire.setRetirementAge(int(getp("ms_harvesretireage")))
 hvDataRetire.setRetirementPeriod(int(getp("ms_harvesretireperiod")))
 hvDataRetire.setRetirementTime(int(getp("ms_harvesretiretime")))

 eventDataRetire = svrdiag.createWLDFDataRetirementByAge("EventDataRetirePolicy")
 eventDataRetire.setArchiveName(""+getp("ms_evtarchivename"))
 eventDataRetire.setEnabled(bool(getp("ms_evtenabled")))
 eventDataRetire.setRetirementAge(int(getp("ms_evtretireage")))
 eventDataRetire.setRetirementPeriod(int(getp("ms_evtretireperiod")))
 eventDataRetire.setRetirementTime(int(getp("ms_evtretiretime")))

def webserver_log(ms, k):
 wbsvr = ms.getWebServer()
 wbsvr.setPostTimeoutSecs(30)
 wbsvrlog = wbsvr.getWebServerLog()
 wbsvrlog.setFileName(''+domainHome+'/logs/ms'+str(k)+'_'+domainName+'_access.log')
 wbsvrlog.setLoggingEnabled(bool(getp("ms_accesslogenabled")))
 wbsvrlog.setLogFileFormat(""+getp("ms_accesslogformat"))
 wbsvrlog.setELFFields(""+getp("ms_extlogfomart"))
 wbsvrlog.setRotationType('byTime')
 wbsvrlog.setRotationTime("23:59")
 wbsvrlog.setFileTimeSpan(24)

 #execQ1 = ms.createExecuteQueue("weblogic.kernel.Default")
 #execQ1.setThreadCount(30)
 #execQ1.setThreadsIncrease(0) 
#####################################################################################
#  MANAGED SERVER CONFIGURATIONS
###################################################################################

def create_ms(k):
 ms = create(""+getp("man"+str(k)),'Server')
 ms.setListenAddress(""+getp("ms_listenaddress"+str(k)))
 ms.setListenPort(int(getp("ms_listenport"+str(k))))
 
 ms.setWeblogicPluginEnabled(bool(getp("ms_defaultwlplugin")))
 #ms.setUse81StyleExecuteQueues(true)
 ms.setMaxOpenSockCount(int(getp("ms_maxopensockcount")))
 ms.setNativeIOEnabled(bool(getp("ms_nativeioenabled")))
 ms.setStuckThreadMaxTime(int(getp("ms_stuckthreadmaxtime")))
 ms.setStuckThreadTimerInterval(int(getp("ms_stuckthreadtimerinterval")))
 ms.setLowMemoryGCThreshold(int(getp("ms_lowmemorygcthreshold")))
 ms.setLowMemorySampleSize(int(getp("ms_lowmemorysamplesize")))
 ms.setLowMemoryTimeInterval(int(getp("ms_lowmemorytimeinterval")))
 ms.setStagingMode(""+getp("ms_stagingmode"))
 ms.setAcceptBacklog(int(getp("ms_acceptbacklog")))
 ms.setLoginTimeoutMillis(int(getp("ms_logintimeoutmillis")))
 ms.setManagedServerIndependenceEnabled(bool(getp("ms_managedserverindependenceenabled")))
 ms.setTransactionLogFilePrefix(""+getp("ms_transactionlogfileprefix"))
 print ' ******* SETTTING MANAGED SERVER ATTRIBUTES for *********** '+getp("man"+str(k))
 logLevel(ms, k)
 setDiagnostics(ms, k)
 webserver_log(ms, k)
 ms.setCluster(clusTgt)
 
################ main program ####################################################
domainName=getp("domainName")
adminServerListenaddr=getp("adminServerListenaddr")
admin_listerport=getp("admlistenport")
adminURL="t3://"+adminServerListenaddr+":"+str(admin_listerport)
domainHome=getp("domainHome")

adminUser=getp("adminUser")
adminPassword=getp("adminPassword")
userConfigFile=""+domainHome+"/bin/userconfigfile.secure"
userKeyFile=""+domainHome+"/bin/userkeyfile.secure"

adminServerName=getp("adminServerName")
clusterName=getp("clusterName")
numMS=getp("total_mansrvr")

connect(adminUser,adminPassword,adminURL)
edit()
startEdit()
cd('/')
#####################################################################################
#  CLUSTER CONFIGURATIONS
#####################################################################################
print ' ******* CREATING CLUSTER *********** '
clu = cmo.createCluster(""+clusterName)
isMulticastTrue=getp("isMulticastTrue")
if (isMulticastTrue == "true"):
 clu.setMulticastAddress(getp("multi_address"))
 clu.setMulticastPort(getp("multi_port"))
else:
 clu.setClusterMessagingMode('unicast')

clu.setWeblogicPluginEnabled(true)
clu.setClusterAddress('')
#cd('/Clusters/'+clusterName+'/OverloadProtection/'+clusterName+'/ServerFailureTrigger/'+clusterName)
#clu.setMaxStuckThreadTime(300)
#clu.setStuckThreadCount(0)
#cd('/Clusters/'+clusterName+'/OverloadProtection/'+clusterName)
#clu.setPanicAction('system-exit')
#clu.setFailureAction('admin-state')
#clu.createServerFailureTrigger()
cd('/Clusters/'+clusterName)
clusTgt = cmo
cd('/')
for k in range(1, int(numMS)+1): 
 print getp("man"+str(k))
 create_ms(k) 
cd('/')
save()
activate(block="true")

disconnect()
#####################################################################################

Here I am publishing the sample properties file that I have tried on my Windows operating system, after the execution of basic domain running with Admin server. When we start the WebLogic 12c or 10.3.6 version on Windows 7 it is not able to open the 'Console'. Alternative solution for this is change the PermSize to 512m in the setDomainEnv.cmd select proper Java vendor and update the following lines.
 set WLS_MEM_ARGS_64BIT=-Xms512m -Xmx512m -XX:PermSize=512m
 set WLS_MEM_ARGS_32BIT=-Xms512m -Xmx512m -XX:PermSize=512m
Start the Admin server so that we can run the online WLST script to configure the number of managed server that are mentioned in the properties file. The properties file is extended for this Cluster implemenation is as follows:
#####################################################################################
# DOMAIN LEVEL CONFIGURATION
##################################################################################
domainTemplate=C:/Oracle/Middleware/wlserver_10.3/common/templates/domains/wls.jar
#Following property is the default property and should not be changed.
weblogicdomainpasspath=Security/base_domain/User/weblogic

adminUser=weblogic
adminPassword=weblogic123$
adminServerName=admin_cldom
adminServerListenaddr=localhost
admlistenport=7100

OverwriteDomain=true
domainName=cldom1
domainHome=C:/wldomains/cldom1

clusterName=cluster_cldom
isMulticastTrue=false
multi_address=
multi_port=
##################################################################################
# MANAGED SERVERS CONFIGURATIONS
##################################################################################
total_mansrvr=2

man1=rdms1_cldom
man2=rdms2_cldom

ms_listenaddress1=localhost
ms_listenaddress2=localhost

ms_listenport1=61001
ms_listenport2=61002

ms_selftunningthreadpoolsizemin=30
ms_selftunningthreadpoolsizemax=35
ms_defaultwlplugin=true
ms_maxopensockcount=1000
ms_nativeioenabled=true
ms_stuckthreadmaxtime=300
ms_stuckthreadtimerinterval=300
ms_lowmemorygcthreshold=5
ms_lowmemorysamplesize=10
ms_lowmemorytimeinterval=3600
ms_stagingmode=nostage
ms_acceptbacklog=65
ms_logintimeoutmillis=5000
ms_managedserverindependenceenabled=true
ms_transactionlogfileprefix=/xa_logs/cldom

ms_accesslogenabled=true
ms_accesslogformat=extended
ms_extlogfomart=c-ip date time cs-method sc-status time-taken bytes cs-uri cs(Referer)

ms_harvesarchivename=HarvestedDataArchive
ms_harvesenabled=true
ms_harvesretireage=168
ms_harvesretireperiod=24
ms_harvesretiretime=0

ms_evtarchivename=EventsDataArchive
ms_evtenabled=true
ms_evtretireage=168
ms_evtretireperiod=24
ms_evtretiretime=0
When we run the sample cluster domain on the Windows 7 the outcome is as follows:
C:\pbin>java weblogic.WLST cluster_conf.py mycldom.properties

Initializing WebLogic Scripting Tool (WLST) ...

Welcome to WebLogic Server Administration Scripting Shell

Type help() for help on available commands

Connecting to t3://localhost:7100 with userid weblogic ...
Successfully connected to Admin Server 'admin_cldom' that belongs to domain 'cld
om1'.

Warning: An insecure protocol was used to connect to the
server. To ensure on-the-wire security, the SSL port or
Admin port should be used instead.

Location changed to edit tree. This is a writable tree with
DomainMBean as the root. To make changes you will need to start
an edit session via startEdit().

For more help, use help(edit)

Starting an edit session ...
Started edit session, please be sure to save and activate your
changes once you are done.
 ******* CREATING CLUSTER ***********
rdms1_cldom
MBean type Server with name rdms1_cldom has been created successfully.
 ******* SETTTING MANAGED SERVER ATTRIBUTES for *********** rdms1_cldom
rdms2_cldom
MBean type Server with name rdms2_cldom has been created successfully.
 ******* SETTTING MANAGED SERVER ATTRIBUTES for *********** rdms2_cldom
Saving all your changes ...
Saved all your changes successfully.
Activating all your changes, this may take a while ...
The edit lock associated with this edit session is released
once the activation is completed.
Activation completed
Disconnected from weblogic server: admin_cldom

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