WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

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These features become more important at larger enterprises, where applications tend to service a larger client base, and more elaborate performance and high availability requirements are in place. WebSphere Application Server Network Deployment Edge Components provide high performance and high availability features. For example, the Load Balancer (a software load balancer) provides horizontal scalability by dispatching HTTP requests among several Web server or application server nodes supporting various dispatching options and algorithms to assure high availability in high volume environments. The usage of Edge Component Load Balancer can reduce Web server congestion, increase content availability, and provide scaling ability for the Web server. WebSphere Application Server Network Deployment also includes a dynamic cache service, which improves performance by caching the output of servlets, commands, Web services, and JSP files. This cache can be replicated to the other servers. The state of dynamic cache can be monitored with the cache monitor application. For more information about WebSphere Application Server Network Deployment V7.0, see the following Web page: http://www.ibm.com/software/webservers/appserv/was/network/ 1.3.5 WebSphere Application Server for z/OS V7.0 IBM WebSphere Application Server for z/OS is a full-function version of WebSphere Application Server Network Deployment. While it offers all the options and functions common to WebSphere Application Server V7.0 on distributed platforms, it enhances the product in a variety of ways: ► Defines Service Level Agreements (SLA) on a transaction base (response time per transaction). ► Protects your production with Workload Management, in times of unpretendable peaks. ► Uses z/OS functionality for billing based on used resources or transactions. ► Uses one central security repository, including Java role-based security. ► Builds a cluster inside of a single application server (multi-servant). ► Profits from near linear hardware and software scalability. ► Profits from System z cluster (Parallel Sysplex®) and up to 99.999% availability. For more information about WebSphere Application Server for z/OS V7.0, see Chapter 14, “WebSphere Application Server for z/OS” on page 419 or visit the following Web page: http://www.ibm.com/software/webservers/appserv/zos_os390/ 16 WebSphere Application Server V7.0: Concepts, Planning, and Design
1.3.6 Packaging summary Table 1-1 details the WebSphere Application Server features. Table 1-1 WebSphere Application Server V7.0 Packaging Features Express Base Network Deployment Workload management within a server: integrated with z/OS Workload Manager (for SLA’s on transactional level and reporting for chargeback) z/OS No No No Yes Enterprise Java Beans 3.0 Yes Yes Yes Yes Full Java EE 5 support Yes Yes Yes Yes Advanced security Yes Yes Yes Yes Broad operating-system support and database connectivity Yes Yes Yes Yes Advanced clustering No No Yes Yes Integration with IBM Rational Application Developer Assembly and Deploy Yes Yes Yes Yes Job manager and deployment manager No No Yes Yes Rapid Java Development and Deployment Kit (JDK) 6.0 Yes Yes Yes Yes Runtime provisioning Yes Yes Yes Yes Large-scale transaction support No No Yes Yes Dynamic caching No No Yes Yes Reporting and charge back: Granular reporting on resource consumption No No No Yes WebSphere Application Server Feature Packs Yes Yes Yes Yes Administrative agent Yes Yes Yes Yes Edge components No No Yes Yes Note: Not all features are available on all platforms. See the system requirements Web page for each WebSphere Application Server package for more information. Chapter 1. Introduction to WebSphere Application Server V7.0 17
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Web server plug-ins A Web server ca
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SIP proxy The SIP proxy design is b
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3.1.11 Generic servers A generic se
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► Aligns WebSphere applications c
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3.2.1 Single cell configurations Yo
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Node Agent Application Server Deplo
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Node Agent V5.1 Application Server
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Administrative Agent WebSphere Appl
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Cluster workload management Workloa
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groups enables WebSphere Applicatio
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Mixed topologies Figure 3-23 shows
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3.4 Runtime processes In this secti
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Node Agent Application Server Deplo
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3.5.3 IBM HTTP Server as an unmanag
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4.1 Infrastructure planning This se
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4.2.1 Scalability Scalability, as u
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4.2.2 Caching 6. Reevaluate. Recogn
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- Consider regular maintenance. In
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4.2.6 Security Disaster recovery co
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► Plan for certificates and their
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4.3 Sizing the infrastructure After
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When using a service such as those
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4.5.4 Load factors ► Monitor reso
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4.5.5 Production system tuning This
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4.6 Planning for monitoring As most
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products, like the IBM Tivoli Compo
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4.7.3 Backup plan 4.7.4 Recovery pl
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5.1 Topology selection criteria 5.1
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Load balancing Use load balancing t
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5.1.3 Security 5.1.4 Maintainabilit
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Scaling Scaling represents the abil
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Both of these options are valid app
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- You will more likely have to call
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5.2 Terminology 5.2.1 Load balancer
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WebSphere Application Server Proxy
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WebSphere Application Server V7.0 s
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5.3.1 Stand-alone server topology T
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► Increased security by using a D
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User Outside World DMZ Internal Net
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Installation and configuration The
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The Web server plug-in distributes
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System D Perform the following step
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primary Load Balancer through heart
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5.3.4 Reverse proxy topology User R
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Installation and configuration: Edg
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System B Perform the following step
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System A 1. Copy the file targetTre
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Note: Each Load Balancer installati
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Disadvantages The major disadvantag
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5.3.6 Heterogeneous cell z/OS DMGR
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Disadvantages The disadvantages of
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Advantages This topology provides t
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The topology in Figure 5-11 shows a
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3. Create an application server pro
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Disadvantages There are no real dis
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This document does not describe the
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When you choose the platform or pla
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6.5 Naming conventions Naming conve
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Forwarding method Each of the avail
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The following examples outline the
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What is next? You can start the Web
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Assume that the application server
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6.8.2 Distributed server environmen
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Assume that the application server
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► Slip install Slip install means
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Deployment Manager . . . Deployment
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Installation factory The Installati
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Note: The IBM Update Installer for
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Profile types The types of profiles
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► Secure proxy profile A secure p
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Deployment manager profile options
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Typical settings Advanced options D
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Application server profile options
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Typical settings Advanced options Y
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Typical settings Advanced options D
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6.9.6 Naming convention The purpose
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If each application server will hos
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There are some specific considerati
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6.10 IBM Support Assistant IBM Supp
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7.1 What is new in V7.0 IBM WebSphe
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7.2.1 Scaling overview Note: In ord
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Note: IBM HTTP Server for z/OS offe
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7.3.2 System tuning To measure the
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For the DMZ secure proxy, there are
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Messaging connection pool When usin
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Workload management is a WebSphere
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For more details about Web server p
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7.5 High availability 7.5.1 Overvie
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7.5.4 Data availability In a WebSph
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7.5.6 Maintainability Software-base
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This time-out can be configured in
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High availability groups High avail
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7.6.1 Edge caching In this section
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7.6.3 Data caching Dynamic caching
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7.7 Session management 7.7.1 Overvi
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The following sections outline the
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Local sessions (non-persistent) If
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► Application Configuration at th
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7.9 WebSphere performance tools Whe
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Monitoring a system naturally chang
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for tuning and performance. The adv
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synthetic transactions or to track
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For more information about ARM, rev
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Planning item Plan for clustering:
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8.1 What is new in V7.0 The followi
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► Enterprise JavaBeans (EJB) thin
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Disciplines Business Modeling Requi
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► Support for WebSphere Applicati
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The WebSphere rapid deployment set
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To group and sort resources in the
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8.5.3 Subversion CVS has the follow
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8.6 Automated build process The maj
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8.8 Automated functional tests Auto
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Development environment Usually, ea
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The system test environment can als
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► Environment-specific This categ
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A lesser known, but better, approac
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Developers need to consider the fol
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► You can use the WebSphere Appli
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9.1 What is new in V7.0 The followi
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9.2 Administrative security We sugg
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9.3.1 Integrated Solutions Console
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JMX, a Java specification part of J
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9.4 Automation planning To emphasiz
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Consider whether to use automatic s
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Some thought needs to be put toward
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Note: A common source of confusion
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File synchronization File synchroni
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9.7.1 Log and traces ► Check the
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9.7.3 Backing up and restoring the
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9.8 Planning checklist for system m
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10.1 Messaging overview: What is me
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10.3.1 Messaging provider standards
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► WebSphere Application Server V5
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If the bus member is a cluster of a
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10.4.2 Choosing a messaging topolog
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With some additional configuration,
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Figure 10-6 illustrates how a servi
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WebSphere MQ server provides the fo
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Other roles that affect permissions
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There is a trade-off between reliab
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11.1 Introduction to Web services W
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11.2.1 What was in Feature Pack for
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► Do you need to promote your bus
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Before we look at the architecture
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Message exchange patterns Some tran
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Workflow-oriented A workflow messag
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Service Consumer Figure 11-8 Compos
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11.5.1 Supported standards WebSpher
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In this type of situation, companie
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Note: Dynamic Caching is only inclu
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12.1 What is new in V7.0 This secti
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Security policy A security policy i
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These components consist of the fol
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The authentication mechanism in Web
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There are some benefits in using Ke
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Lightweight Directory Access Protoc
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12.2.2 Authorization Trust associat
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Fine-grained administrative securit
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that is involved in an Internet tra
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Users Fred Sally Mike Figure 12-4 U
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Note: Be aware that some configurat
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WebSphere Application Server provid
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Scenario 3: Using a z/OS security p
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Resources For a good overall refere
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13.1 Available feature packs The cu
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The included extensions to Ajax are
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Another good source of information
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Figure 13-2 Key SCA concepts ► Pr
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► SCA Web Services Binding V1.0 T
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14.1 WebSphere Application Server s
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14.1.3 Cell component—daemon WebS
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While WebSphere Application Server
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Cell Deployment Manager Control reg
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14.1.6 Workload management for WebS
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Request Platinum customer Request G
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Availability The concept of a separ
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Note: While the 31-bit mode can sti
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► MEMLIMIT setting in the JCL or
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14.4.3 HFS structure The HFS struct
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Cell01 Core Group Node01 Deployment
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14.5.4 XCF—alternative protocol o
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Member notification To notify the o
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14.6 z/OS Fast Response Cache Accel
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Perform the following steps to conf
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Note: By default the FRCA cache is
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14.6.4 Resource Access Control Faci
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The results of this can be as follo
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Note: If the request exceeds the sp
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garbage collection. The garbage col
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14.8.3 Function Modification Identi
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Note: For detailed information abou
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The set of tools is available for W
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14.9 System programmer consideratio
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Intelligent runtime provisioning Th
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Shared class cache This section con
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Because this is a JVM technique tha
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The REUSASID parameter is automatic
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14.10.1 Planning considerations Tab
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Various tools are available to ease
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15.1 Infrastructure migration consi
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15.1.1 Scripting migration Since We
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15.1.6 Mixed cell support To ease t
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Automated migration with mixed vers
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15.4 Messaging migration considerat
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15.7 WebSphere Application Server f
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MMT is intended for use by a system
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5. When you have successfully enter
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Example 15-1 Migration management c
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Tip: The BBOWMG3x job is long runni
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For more information about how to c
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Topology review Client Network (10.
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Advantages Disadvantages Sample top
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► In order to show the new securi
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Installing HTTP Servers (servers B
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Creating Job manager (server E) The
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d. On the Integrated Solutions Cons
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After clicking OK, we got the answe
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One WebSphere Application Server no
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Figure A-10 Additional parameters F
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Figure A-14 Job finished Summary We
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Online resources ► WebSphere Appl
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