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  • Mastering JBoss Enterprise Application Platform 7
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Mastering JBoss Enterprise Application Platform 7

Mastering JBoss Enterprise Application Platform 7

By : Marchioni, Luigi Fugaro
3.7 (3)
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Mastering JBoss Enterprise Application Platform 7

Mastering JBoss Enterprise Application Platform 7

3.7 (3)
By: Marchioni, Luigi Fugaro

Overview of this book

The JBoss Enterprise Application Platform (EAP) has been one of the most popular tools for Java developers to create modular, cloud-ready, and modern applications. It has achieved a reputation for architectural excellence and technical savvy, making it a solid and efficient environment for delivering your applications. The book will first introduce application server configuration and the management instruments that can be used to control the application server. Next, the focus will shift to enterprise solutions such as clustering, load balancing, and data caching; this will be the core of the book. We will also discuss services provided by the application server, such as database connectivity and logging. We focus on real-world example configurations and how to avoid common mistakes. Finally, we will implement the knowledge gained so far in terms of Docker containers and cloud availability using RedHat's OpenShift.
Table of Contents (15 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Installation and Configuration
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1. Installation and Configuration
What's new in EAP 7?
Installing EAP 7
Starting the application server
Stopping the application server
Basic server administration
EAP 7 basic configuration
Application server core building blocks
Summary
2
2. The CLI Management Tool
2. The CLI Management Tool
Connecting to the CLI
Using the CLI
Basic operations
Features of the CLI
Summary
3
3. Managing EAP in Domain Mode
3. Managing EAP in Domain Mode
Domain mode breakdown
Handy domain properties
Electing the domain controller
Creating an advanced domain
Domain controller failover
Additional EAP 7 features
Summary
4
4. Deploying Applications
4. Deploying Applications
Overview of deployments
Deployment in standalone mode
Deployment in domain mode
Advanced deployment strategies
Summary
5
5. Load Balancing
5. Load Balancing
The need for balancing
Load balancing with mod_cluster
Using other balancing solutions
Summary
6
6. Clustering EAP 7
6. Clustering EAP 7
Clustering overview and misconceptions
Clustering in standalone mode
Clustering from a network point of view
Clustering in domain mode
Advanced topics
Summary
7
7. Logging
7. Logging
The basics of logging
Configuring handlers
Configuring loggers
Managing your application logging
Reading logs with management interfaces
Building a centralized logging system
Summary
8
8. Configuring Database Connectivity
8. Configuring Database Connectivity
Introduction to datasources
Datasource overview
Adding a JDBC 4 driver module
Configuring a JDBC 4-compliant driver
Defining a new datasource
Defining an XA-datasource
Hardening datasource configuration
Summary
9
9. Configuring EAP 7 for Java EE Applications
9. Configuring EAP 7 for Java EE Applications
Configuring the EJB container
Configuring the web server
Monitoring your applications
Summary
10
10. Messaging Administration
10. Messaging Administration
Introduction to Artemis MQ
Configuring broker transport
Configuring persistence
Configuring destinations
Routing messages to other destinations
Clustering
Summary
11
11. Securing the Application Server
11. Securing the Application Server
Creating security domains
Securing the management interfaces with LDAP
Configuring RBAC
Securing the management interfaces
Summary
12
12. New Security Features of EAP 7
12. New Security Features of EAP 7
EAP 7 new security model
Introducing elytron
Introducing Red Hat SSO
Summary
13
13. Using EAP 7 with Docker
13. Using EAP 7 with Docker
Getting to grips with Docker
Creating your Docker images
Managing the server storage
Managing multiple containers
Summary
14
14. Running EAP 7 on the Cloud Using OpenShift
14. Running EAP 7 on the Cloud Using OpenShift
Introducing OpenShift
OpenShift Online
Developing and deploying your first OpenShift application in the cloud
Summary

EAP 7 basic configuration

JBoss EAP provides two operating modes for the servers: the standalone mode and the domain mode. A standalone server is a Java process which is governed by a single management point using a configuration file. A domain server, on the other hand, is a group of Java processes which are managed through a single point called the Domain Controller and its configuration file.

The difference between the two operating modes is related to management capabilities rather than functionalities: a clear example of this is the high availability (HA) functionality that is available both in the standalone mode and in the domain mode; you will just use different configuration files to manage your cluster. Let's see more in detail the specific server configuration.

Standalone configuration

A standalone server is an independent server process which uses a single configuration file. The configuration, by default, is stored in the JBOSS_HOME/standalone/configuration folder. Within this directory, some built-in configurations are available. Here is a short description of them:

  • standalone.xml: This is the default standalone configuration file used by the application server. It does not include the messaging subsystem and is not able to run in a cluster.
  • standalone-full.xml: This configuration adds to the default configuration the messaging provider and iiop-openjdk libraries.
  • standalone-ha.xml: This configuration enhances the default configuration with clustering support (JGroups/mod_cluster).
  • standalone-full-ha.xml: This configuration adds both clustering capabilities and the messaging / iiop openjdk libraries.

If you want to start a non-default configuration, then you can use the -c parameter. Here's, for example, how to start the server using the ha server configuration:

$ ./standalone.sh -c standalone-ha.xml

Domain configuration

When running in domain mode the configuration is maintained in a single file named domain.xml that resides on the domain controller. This file contains a set of profiles, each one corresponding to the configuration seen earlier in the standalone mode, so you will be able to find the following XML structure within it:

<profiles> 
        <profile name="default">. . .</profile> 
        <profile name="ha"> . . . </profile> 
        <profile name="full"> . . .</profile> 
        <profile name="full-ha">. . .</profile> 
</profiles>

Each domain is logically divided into server groups that contain the single server instances. The server groups are bound to the profiles described so far:

<server-groups> 
        <server-group name="main-server-group" profile="full"> 
            <socket-binding-group ref="full-sockets"/> 
        </server-group> 
        <server-group name="other-server-group" profile="full-ha"> 
            <socket-binding-group ref="full-ha-sockets"/> 
        </server-group> 
</server-groups>

The single server instances are defined in the host.xml file that is included in every host controller. Within this file you will find the list of servers that will be available on that host:

<servers> 
      <server name="server-one" group="main-server-group"> 
      </server> 
      <server name="server-two" group="main-server-group"
      auto-start="true"> 
            <socket-bindings port-offset="150"/> 
      </server> 
      <server name="server-three" group="other-server-group" 
      auto-start="false"> 
            <socket-bindings port-offset="250"/> 
      </server> 
</servers>

We will discuss more in detail about the domain core components in Chapter 3, Managing EAP in Domain Mode, of this book. Whatever your server mode, a number of common configuration concepts apply; in the next sections of this chapter we will describe them.

End of Section 7
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