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4. Open source implementation of the Java EE suite of services
Great deal of customization due to modularization of the services like.
• Enterprise JavaBeans (EJB)
• Java Persistence API (JPA)
• Java Messaging Service (JMS)
• Java Transaction Service/Java Transaction API (JTS/JTA)
• Servlets and Java Server Pages (JSP)
• Java Naming and Directory Interface (JNDI)
Community JBoss Application Server and JBoss Enterprise Application
Platform.
JBoss Introduction
5. Developed by JBoss Inc. now a Red Hat division.
JBoss AS 4.0, a Java EE 1.4 features embedded apache tomcat.
JBoss AS 4.2 also functions as a Java EE 1.4 but deploys EJB 3.0 by default
JBoss AS 5.1, released as of 2009, operates as a Java EE 5 application
server built on top of a new JBoss micro container.
JBoss AS 6.0, an unofficial implementation of Java EE 6, was released on
December 28, 2010. JBoss AS 6 does not support the full Java EE 6 stack
JBoss AS 7, the current stable release, was released on July 12, 2011.
JBoss Server : History
7. Community JBoss Application Server
Development process allows for rapid innovation.
Best suited for early to advanced prototyping and development
http://www.jboss.org/jbossas/downloads/
http://docs.jboss.org/jbossas/docs/Installation_And_Getting_Started_Guide/5/ht
ml/index.html
JBoss Enterprise Application Platform:
Integrates JBoss Application Server, with JBoss Hibernate, JBoss Seam, and
other leading open source Java technologies from JBoss.org into a complete,
simple enterprise solution for Java applications.
Integrated, tested and certified Enterprise Platforms.
Evaluation copy : http://www.jboss.com/downloads/
http://docs.redhat.com/docs/en-
US/JBoss_Enterprise_Application_Platform/5/html/Installation_Guide/Introductio
n.html
8. Jboss Microcontroller : POJO based kernel ,wires all the services. Core of the server.
Fully-certified Java EE 5 implementation.
Full support for EJB 3.0
JBoss Messaging is a high performance JMS provider, rewrite of JBossMQ.
JBossCache enhancing the performance for caching the data. Comes in two flavors.
A traditional tree-structured node-based cache
PojoCache, an in-memory, transactional, and replicated cache system that allows
users to operate on simple POJOs transparently without active user management
of either replication or persistency aspects.
JBossWS is the web services stack for JBoss 5 providing Java EE compatible web
services,
JBoss Transactions is the default transaction manager for JBoss 5.
JBoss Web is the Web container in JBoss 5, an implementation based on Apache Tomcat
that includes the Apache Portable Runtime (APR).
JBoss Security has been updated to support pluggable authorization models including
SAML, XACML and federation
JBoss EAP
11. Crux of Jboss, which is the foundation architecture into which you can plug only the
services that your application needs, thus you can run as many or as few services that you
want, which can reduce the footprint thus consuming less memory and resources, it also
can help in reducing security risks.
You can use bean configuration files in the server/xxx/conf directory to configure the
MicroContainer.
Jboss 5.0 still provides few services based on JMX (Java Management eXtensions) to
access the MBeans.
JMX Service is defined by JMX kernel is server/xxx/conf/jboss-service.xml, some Mbeans
defined are below.
• The logging Service
• The Thread Pool - used to supply threads to run various services
• The Java Naming and Directory Interface - JNDI
• Various MBeans for managing security - includes JAAS
• Various MBeans related to accessing JMX services
• Various MBeans related to the remoting service
JBoss Micro Container
12. Pre-Requisites
• Enterprise Application Platform 5 requires a Java 6 JDK or JRE.
Installation Methods.
ZIP download: Enterprise Application Platform 5 requires a Java 6 JDK or JRE.:
The ZIP installation method is the easiest and quickest if you are familiar with
JBoss technologies, or if you are looking for a light-weight method for testing or
development. This method requires some post-installation configuration.
RPM installation: It is suitable for production deployment on Red Hat Enterprise
Linux systems. RPM installation leverages the benefits of RPM for updating,
system management, and integration with administration tools.
Graphical Installer: The graphical installer simplifies the installation and
configuration process. In addition to installing the base files, the installer offers
automation of optional component installation, and basic out-of-the-box security
configuration.
Installation
13. Steps
Download the software from RedHat site. (Evaluation Copy)
Application Platform <release> Binary Installer
https://access.redhat.com/downloads/evals
Execute the command java -jar jboss-eap-installer-<release>.jar
Specify the installation directory
Select the packages you would like to install
For ex. WebServices stack
Specify the JMX Security
Install the native libraries
Perform the post installation activities like securing the JMX console, Admin Console etc.
Graphical Installation
14. Bin: Contains all the scripts to start the server, installing the server as a Service.
Client: Contains all the client specific jar files.
Common: Contains the jar files that are common to all the server profiles.
Docs: Contains the documents and examples.
Lib: Contains the library files.
Server: Contains server configurations. By default the Jboss installation contains the below
server configurations.
Minimal: Has a minimal configuration—the bare minimum services required to start
JBoss. There is no web container, no EJB or JMS support.
Default : Contains a default set of services. It has the most frequently used services
required to deploy a Java EE application. Does not include the JAXR service, the IIOP
service, or any of the clustering services.
All: Starts all the available services. This includes the RMI/IIOP and clustering
services, which are not loaded in the default configuration.
Standard : JavaEE 5 certified configuration of services.
Web: Lightweight web container oriented profile that previews the JavaEE 6 web
profile.
Production: Configuration optimized for production environments.
JBoss Server Structure – Directories.
15. JBoss Native Components
Incorporates native operating system components and connectors
Higher server performance, as native operating system code becomes available for the server to optimize
tasks.
Apache Portable Runtime (APR) provides superior scalability, performance, and improved integration
with native server technologies
OpenSSL implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols and
includes a basic cryptographic library.
Tomcat Native (TC-Native) is a Java Native Interface (JNI) that provides much of Tomcat's core
functionality in native code rather than Java. This allows for an overall increase in the speed of a server.
mod_jk connects the Tomcat JSP container to the Apache webserver, providing load-balancing.
mod_cluster is an httpd-based load balancer. In contrast to mod_jk, mod_cluster creates a feedback loop
between the proxy server and the worker nodes, enabling intelligent load distribution and routing within a
load-balancing cluster.
ISAPI is a connector for the Microsoft IIS web server.
HornetQ a JMS messaging provider which provides high performance
16. Server Profile Directory Structure
Conf :Contains the bootstrap.xml bootstrap descriptor file for a given server configuration.
This defines the core microcontainer beans.
Data: Used by services that want to store content in the file system. It holds persistent data
for services intended to survive a server restart.
Deploy: Contains the hot-deployable services (those which can be added to or removed
from the running server). You deploy your application code by placing application packages
(JAR, WAR and EAR files) in the deploy directory. The directory is constantly scanned for
updates, and any modified components will be re-deployed automatically.
Lib: Contains library files specific to the server configuration. All JARs in this directory are
loaded into the shared classpath at startup. Jars common across the serverconfigurations
are now located in <JBoss_Home>/common/lib.
Log: This is where the log files are written. JBoss uses the Jakarta log4j package for
logging.This may be overridden through the conf/jbosslog4j.xml configuration file.
tmp Used for temporary storage by JBoss services. The deployer, for example, expands
application archives in this director
Work: Directory is used by Tomcat for compilation of JSP
17. Starting the Server:
Move to JBOSS_DIST/jboss-as/bin directory and execute the run.bat (for Windows) or
run.sh (for Linux) script, as appropriate for your operating system.
$JBOSS_HOME/bin/run.bat
Note: Below are the default settings.
The server is bound to 127.0.0.1 for security reasons. To enable remote access by binding
JBoss services to a particular interface, simply run jboss with the -b option.
$JBOSS_HOME/bin/run.bat –b
The server runs on port 8080 and to change the settings, we can run it as below.
$JBOSS_HOME/bin/ run -Djboss.service.binding.set=ports-01
Specify alternate server profile.
$JBOSS_HOME/bin/ run –c <alternate-server-profile>
Stopping the server:
You can run the shutdown script to shutdown the server.
$JBOSS_HOME/bin/shutdown.sh
JBoss Server Start / Stop.
18. JBOSS_HOME URL: file:/H:/jboss-6.0.0.Final/
Bootstrap: $JBOSS_HOMEserver/default/conf/bootstrap.xml
Common Base: $JBOSS_HOMEcommon/
Common Library: $JBOSS_HOMEcommon/lib/
Server Name: default
Server Base: $JBOSS_HOMEserver/
Server Library: $JBOSS_HOMEserver/default/lib/
Server Config: $JBOSS_HOMEserver/default/conf/
Server Home: $JBOSS_HOMEserver/default/
Server Data: $JBOSS_HOMEserver/default/data/
Server Log: $JBOSS_HOMEserver/default/log/
Server Temp: $JBOSS_HOMEserver/default/tmp/
JBoss server- Default
20. Start automatically when you boot a Windows host computer
JBoss AS comes with Windows service executable as part of Jboss Native library that can
run JBoss Application Server as service.
The service executable jbosssvc.exe transforms run.bat and shutdown.bat batch scripts
to services. This means that any change made to those scripts will be used both in
service and command line mode.
http://www.jboss.org/jbossweb/install/service.html
JBoss as Windows Service
21. Lab - 1
Installing the Jboss App. Server.
Exploring the directory structure.
Starting and stopping the server.
Changing the default ports.
Binding to different IP interfaces.
Lab – 2
Exploring the memory arguments.
Changing the default memory argument values
Lab – 3
JBoss as windows service
Labs
22. Included from Jboss 5.1.0 distribution list onwards.
Uses the Embedded Jopr (As it runs as a part of Jboss Admin Server).
Console web application runs “on-demand” and is deployed only when the request is
made.
You can disable the “on-demand” deployment with the below parameter.
-Djboss.as.deployment.ondemand=false
Default username / password is admin/ admin defined in the below file.
server/configuration/conf/props/jmx-console-users.properties
Change/ update the roles by editing the below file.
server/configuration/conf/props/jmx-console-roles.properties
JBoss Administration Console
23. JBoss Administration Console - Continued
The Admin Console is secured by the JAAS security domain jmx-console .
Enabling Authentication on the Admin Console
In this web.xml file:JBOSS_HOME/server/PROFILE/deploy/management/console-
mgr.sar/web-console.war/WEB-INF/web.xml ensure the following
security-constraint fragment is uncommented
Enabling Security Domain on the Admin Console
In this jboss web.xml file:
JBOSS_HOME/server/PROFILE/deploy/management/console-
mgr.sar/web.console.war/WEB-INF/jboss-web.xml
ensure the following fragment is included.
<jboss-web>
<security-domain>java:/jaas/jmx-console</security-domain>
</jboss-web>
24. Features:
Provides an overview of the server configuration
Configuring the ports using the Service Binding Manager.
Deploy, Re-deploy, Undeploy and control the applications.
Configure, manage JMS resources
Configure, manage connection factories.
Add, remove, configure and control the Data Sources.
Gather metrics related to the EAP instances, JMS Queues, Topics, Data Sources
JBoss Admin Console - Continued
25. It’s a JBoss Management Console which provides a raw view of the JMX MBeans which
make up the server. They can provide a lot of information about the running server and
allow you to modify its configuration, start and stop components and so on.
Things we can do with JMX Console.
Display the JNDI tree : Lists the JNDI object bound using service=JNDIView
Generate a thread dump: Capture the thread dumps using jboss.system:type=ServerInfo
Mbean
Display the memory pool usage : Using the jboss.system:type=ServerInfo mbean
Manage the deployment scanner: Enable/ Disable the Hot Deployment scanner.
Redeploy an application
Shut down JBoss
Note: Any changes made by using the JMX console are not persistent, this means when
JBoss is restarted all changes are lost, MBeans do not change the XML files.
JBoss JMX Console
26. JMX: Its Java Management Extension allows to integrate modules, containers, and plug-
ins. These components are collectively called Mbeans.
Command line tool that allows for interaction with a remote JMX server instance.
Executed by Twiddle.sh / twiddle.bat under the $JBOSS_HOME/bin folder.
twiddle.bat –h
usage: twiddle [options] <command> [command_arguments]
Connecting to a remote server using twiddle.
twiddle.bat -s localhost:1099 serverinfo –d
jboss
List the Mbeans that can be accessed.
twiddle.bat -s localhost:1099 serverinfo –l
References:
http://docs.jboss.org/jbossas/jboss4guide/r1/html/ch2.chapter.html
JBoss Twiddle Utility
27. JBoss Logging
In JBoss log4j is used for logging.
Controlled by <server-profile>/conf/jboss-log4j.xml file.
Defines different appenders, message format, log levels etc.
By default, JBoss produces output to both the console and a log file (log/server.log).
Console default level is INFO.
No default log level for server log, so everything is logged (DEBUG).
Different log levels TRACE, DEBUG, INFO, WARN, ERROR and FATAL.
run.bat -Djboss.server.log.threshold=DEBUG
You can have specific logging for different sub systems by modifying the appenders
defined in the file.
<appender name="FILE" class="org.jboss.logging.appender.DailyRollingFileAppender">
<errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"/>
<!-- <param name="File" value="${jboss.server.log.dir}/server.log"/> -->
<param name="File" value="C:/server.log"/>
<param name="Append" value="true"/>
28. Lab - 4
Exploring the Admin console and JMX console.
Checking the services
Lab – 5
Exploring the Twiddle utility.
Examples to getting Server Information, Global JNDI Information,Jboss Logging
Information,Thread Pool information:
Lab – 6
Understanding the logging feature.
Changing the default logging level.
Labs
Notas do Editor
Community Jboss Server:Development process allows for rapid innovation.Jboss Enterprise Application Platform:Includes patches, updates, SLA-based support, multi-year maintenance policies, and Red Hat Open Source Assurance.Best of both worlds - rapid innovation, with long-term stability, supportability and maintainability.
Fully-certified Java EE 5 implementation.Jboss CacheA traditional tree-structured node-based cache PojoCache, an in-memory, transactional, and replicated cache system that allows users to operate on simple POJOs transparently without active user management of either replication or persistency aspects.
Reduce the footprint thus consuming less memory and resources, it also can help in reducing security risks.Wires the POJO services
Enterprise Application Platform 5 requires a Java 6 JDK or JRE.: The ZIP installation method is the easiest and quickest if you are familiar with JBoss technologies, or if you are looking for a light-weight method for testing or development. This method requires some post-installation configuration. Does not include native libraries. It is suitable for production deployment on Red Hat Enterprise Linux systems. RPM installation leverages the benefits of RPM for updating, system management, and integration with administration tools.The graphical installer simplifies the installation and configuration process. In addition to installing the base files, the installer offers automation of optional component installation, and basic out-of-the-box security configuration.