WLST

1. WLST Web Logic Scripting Tool

2. WSLT introduction • What it is? • command-line scripting environment • Used for? • create, manage, and monitor WebLogic Server domains

3. Web Server • Specialized type of file server • Work • The user requests a web page. The Web Server finds the web page file in a local directory and sends it back out to the user.Dasd

4. Application Server • To extend web servers to support dynamic content.

5. Weblogic • Platform for developing multitier enterprise applications based on the Java programming language.

6. Weblogic • Weblogic server • Java EE application server, WebLogic Application Server • an enterprise portal, WebLogic Portal • an Enterprise Application Integration platform • a transaction server and infrastructure, WebLogic Tuxedo • a telecommunication platform, WebLogic Communication Platform • an HTTPweb server • Oracle Product

7. Weblogic also contains • Oracle WebLogic Server forms part of Oracle Fusion Middleware portfolio and supports Oracle, DB2, Microsoft SQL Server, MySQL Enterprise and other JDBC-compliant databases. Oracle WebLogic Platform also includes: • JRockit, a custom JVM. • Korthal that includes Commerce Server and Personalization Server • WebLogic Integration • WebLogic Workshop, an Eclipse IDE for Java, SOA and Rich Internet Applications • WebLogic Server includes .NETinteroperability and supports the following native integration capabilities: • CORBA connectivity • COM+ Connectivity • IBM WebSphere MQ connectivity • Java EE Connector Architecture • Native enterprise-grade JMS messaging • WebLogic/Tuxedo Connector • Oracle WebLogic Server Process Edition also includes Business Process Management and Data Mapping functionality. WebLogic supports security policies managed by security administrators. The Oracle WebLogic Server Security Model includes: • application business logic separated from security code • complete scope of security coverage for all Java EE and non-Java EE components

8. Weblogic Domain • Logically related group of WebLogic Server resources. • Domains include a special WebLogic Server instance called the Administration Server, which is the central point from which you configure and manage all resources in the domain. • Usually, you configure a domain to include additional WebLogic Server instances called Managed Servers. • You deploy Web applications onto the Managed Servers and use the Administration Server for configuration and management purposes only.

9. Weblogic Domain

10. Domain configuration • Config 1: WebLogic Server installation to create and run multiple domains • Config 2: Multiple installations to run a single domain

11. Domain configuration • Config 1: WebLogic Server installation to create and run multiple domains • Config 2: Multiple installations to run a single domain

12. Domain Configuration • Which configuration to select? • How you organize your WebLogic Server installations into domains depends on your business needs.

13. WSLT introduction • What it is? • command-line scripting environment • Used for? • create, manage, and monitor WebLogic Server domains

14. Jython • Jython • JPython successor • JPython = Java + Python • Python written in Java • Some facts • freely available for both commercial and non-commercial • distributed with source code • Features • Java can use Jython libraries • To create scripts to add functionallity • Jython can use Java classes (Interpreter used) • Small code • Python programs are typically 2-10X shorter than the equivalent Java program • Why Jython? •  initially created in late 1997 to replace C with Java

15. How WLST help? • Provides a set of scripting commands that are specific to WebLogic Server • You can extend the WebLogic scripting language to suit your needs by following the Jython language syntax. 

16. WLST Modes • WLST Offline • WLST Online

17. WLST Offline • WLST Offline ->  command-line equivalent to the Configuration Wizard 

18. WLST Online • WLST Online ->  command-line equivalent to the WebLogic Server Administration Console 

19. WLST Offline vs WLST Online

20. How to execute WLST commands? • Interactive Mode • on the command line • Script Mode • In batches, supplied in a file • Embedded Mode • Embedded in Java code

21. Interactive Mode • Enter a command and view the response at a command-line prompt • useful for getting immediate feedback • useful for learning the tool, prototyping command syntax, and verifying configuration options before building a script.

22. Script Mode • Invoke a sequence of WLST commands without requiring your input • Much like a shell script. • = WLST commands in a text file with a .py file extension. • E.g. filename.py. • To run commands Jython commands are used. • What can be achieved? • Automate WebLogic Server configuration and application deployment • Apply the same configuration settings, iteratively, across multiple nodes • Most Programming concepts available: • loops, flow control constructs, conditional statements • Schedule scripts to run at various times • Automate repetitive tasks and complex procedures.

23. Embedded Mode • Run WLST commands and scripts from java code. • All WLST commands and variables that you use in interactive and script mode can be run in embedded mode. • Example: import weblogic.management.scripting.utils.WLSTInterpreter; import org.python.util.InteractiveInterpreter; public class function{ InteractiveInterpreter interpreter = new WLSTInterpreter(); StringBuffer buffer = new StringBuffer(); buffer.append("connect('weblogic','weblogic')"); interpreter.exec(buffer.toString()); }

24. Demo • Step 1: Start WLST • Step 2 : Start using commands • Interactive Mode • Script Mode • Embedded Mode

25. More Demos • Shutdown Admin Server • Start Admin Server • Create Manage Server & Cluster

26. Command Categories • Browse Commands • Control Commands • Deployment Commands • Diagnostics Commands • Editing Commands • Information Commands • Life Cycle Commands • Node Manager Commands • Tree Commands

27. MBean • MBean • Managed bean • Java bean that provides a JMX interface • JMX is the J2EE solution for monitoring and managing resources on a network • JMX is a public specification and many vendors of commonly used monitoring products support it. • Here can be used to configure, monitor, and manage WebLogic Server resources through JMX.

28. Browse Commands

29. Control commands • Connect/disconnect server • Create/configure domain • Exit WLST

30. Deployment commands • Deploy, undeploy, and redeploy applications. • Update an existing deployment plan. • Start and stop a deployed application.

31. Diagnostics Commands

32. Editing Commands

33. Information Commands • Interrogate • domains • servers • variables • Provide • configuration bean • runtime bean • and WLST-related information.

34. Life Cycle Commands • Manage the life cycle of a server instance.

35. Node Manager Commands • Start, shut down, restart, and monitor WebLogic Server instances using Node Manager.

36. Tree Commands • Navigate among MBeanhierarchies.

37. FAQs • What about existing command-line utilities? • It includes capabilities of following: • weblogic.Admin->Used to interrogate MBeans and configure a WebLogic Server instance • wlconfig Ant -> for making WebLogic Server configuration changes • weblogic.Deployer utility for deploying applications. • When would I choose to use WLST over the other command-line utilities or the Administration Console? • Tasks can be done interchangeably • But the method that you choose depends on whether you prefer using a graphical or command-line interface, and whether you can automate your tasks by using a script. • WLST online vs offline? • online -> connected to a running Administration Server or Managed Server instance • offline -> not connected to a running server.

38. FAQs • Can I run regular Jython scripts from within WLST? • Yes scripting language can be extended following the Jython language syntax. • Can I invoke WLST via Ant? • Yes, one could fork a new weblogic.WLST process inside an Ant script and pass your script file as an argument. • Can I customize WLST? • Yes. You can update the WLST home directory to define custom WLST commands, WLST commands within a library, and WLST commands as a Jython module. For more information, see Customizing WLST.

39. Most Important • Help (‘command’)

40. Thank you.