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

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14.4.3 HFS structure The HFS structure of the WebSphere Application Server for z/OS V7.0 is built out of the components, seen in Table 14-1 (with default location). Table 14-1 WebSphere Application Server for z/OS file system structure FMID Component HFS path H28W700 Application server itself /usr/lpp/zWebSphere/V7R0 JIWO700 Optional Material /usr/lpp/zWebSphere_OM/V7R0 JDYZ700 Secure Proxy Server /usr/lpp/zWebSphere_SPS/V7R0 HHAP700 IBM HTTP Server V7 /usr/lpp/IHSA/V7R0 14.5 XCF support for WebSphere HA manager This section describes the WebSphere Application Server support for the z/OS Cross Coupling Facility (XCF) protocol. It also gives an overview of WebSphere’s HA manager and the default protocol used for discovery and failure detection in an application server cluster. 14.5.1 XCF support overview and benefits WebSphere Application Server for z/OS V7.0 adds the option to use the XCF system services to monitor the status of cluster components instead of the default common code base technique. This kind of implementation has two main values: ► Reduced CPU Overhead The usage of the XCF significantly reduces the overhead that comes through the ping packets sent by each core group member. This is noticeable during CPU idle times. ► Improved interval for failure detection While the default interval used in the original protocol (180 seconds) was not convenient for every environment, the usage of the XCF system service reduces this time. The default settings provide information after 90 seconds. These values can still be adjusted by the system programmer. 438 WebSphere Application Server V7.0: Concepts, Planning, and Design
Note: While the usage of the XCF system service is an option on the z/OS platform, the default setting for the core group member failure detection is the heartbeat technique. This default setting is chosen due to the common code base. Due to the benefits of the XCF support for WebSphere HA manager, we suggest using the alternate protocol, if all prerequisites are met (14.5.5, “Activating XCF support for HA manager” on page 444). 14.5.2 WebSphere HA manager The WebSphere high availability manager (HA manager) was introduced with version 6.0 to make sure that components within the WebSphere Application Server are always available. To achieve this, an HA manager instance runs within each component of a cell, including application servers, the deployment manager, and the node agent (Figure 14-7 on page 440). Chapter 14. WebSphere Application Server for z/OS 439
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WebSphere Application Server V7.0:
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Note: Before using this information
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2.2 Tivoli Directory Server . . . .
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5.1.3 Security . . . . . . . . . .
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7.9 WebSphere performance tools . .
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11.4 Web services architecture . .
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14.9.7 Java Command Language (JACL)
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xiv WebSphere Application Server V7
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Trademarks IBM, the IBM logo, and i
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xviii WebSphere Application Server
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Tze Puah is an Application Infrastr
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Become a published author Join us f
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1.1 Java Platform Enterprise Editio
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1.2 WebSphere Application Server ov
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1.2.2 Evolving Java application dev
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Runtime provisioning WebSphere Appl
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WebSphere Application Server suppor
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Installation Factory WebSphere Appl
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WebSphere Application Server for z/
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These features become more importan
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1.4 Supported hardware, platforms,
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Operating systems Versions Linux®
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1.4.5 Directory servers Databases V
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► Product binaries and source cod
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Some of the features of Rational Ap
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Groovy and PHP. It also includes ap
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2.1 Tivoli Access Manager IBM Tivol
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All communication between the Tivol
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LDAP is a fast and simple way of lo
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For WebSphere Application Server Ve
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WebSphere MQ applications can send
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► Technology Adapters These adapt
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The IBM WebSphere DataPower SOA App
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Client or Server Internet IP Firewa
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2.6 DB2 IBM DB2 is an open-standard
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2.7.1 Integration with WebSphere Ap
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50 WebSphere Application Server V7.
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3.1 WebSphere Application Server co
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Administration is greatly enhanced
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About Figure 3-2 : This figure only
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It is also possible to replicate se
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DMgr Node Deployment Manager Node A
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3.1.6 Deployment manager Local conf
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3.1.8 Job manager The administrativ
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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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120 WebSphere Application Server V7
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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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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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WebSphere Application Server V7.0:
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