Article title: Linux Application Development fuel: create WebSphere (1 ). Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
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It is also called Deployment Manager. it interacts with the Node Agent running on each actual computer in the unit to manage multiple nodes in the distributed topology. Technically speaking, it is an application server that runs a management console instance. it can manage all the application servers configured in the same unit.
For more information about IBM WebSphere Application Server clusters, see The IBM Redbooks IBM WebSphere V5.0 Performance, Scalability, and High Availability listed in the following references.
Basic WebSphere Application Server installation includes all the content required by individual Application Server processes and the code required to run the Node Agent. The node proxy is used only when a node is added to a unit (joined to a unit. The network deployment and installation of WebSphere Application Server can support one computer system network, and the computer system is configured as multiple cooperative instances that run a single Server installation.
The IBM WebSphere Application Server Network Deployment Package includes an Application Server/ibm http Server CD and a Deployment Manager CD. Before installing Deployment Manager, you must first install the Application Server on each node. the following sections will detail the installation process.
Before getting started This article is based on SuSE Linux Enterprise Server (SLES) V8 for iSeries and pSeries systems.
To create a Linux-based WebSphere Application Server cluster on iSeries and pSeries, you must first install WebSphere Application Server V5 on each computer in the cluster. You can install WebSphere Application Server by following the steps in "Installing WebSphere Application Server V5.0 for Linux on iSeries and pSeries.
Server load balancer cluster Server load balancer distributes tasks among cluster application servers. Follow these steps to create a WebSphere Application Server cluster that supports workload management and failover.
Figure 1 shows how to install the Application Server on two nodes and Deployment Manager on one node. we will use this in this example. In actual Deployment scenarios, you may install the Deployment Manager on a separate machine in the same network as the installation node.
Figure 1. cluster settings
Install Application Server and configure the network
To reproduce the example in figure 1, you need to install the Application Server on two computers. In addition, you also need to install Deployment Manager on one of the computers. In our example, we use two iSeries and pSeries servers (or two logical partitions) connected by a network based on a 64-bit POWER processor ), run UnitedLinux Version 1.0 for iSeries/pSeries (PowerPC ).
The two machines, TP1 and TP2, must have a fixed IP address and a network with a DNS server. If you do not have a DNS server for testing and development environments, you can use the/etc/hosts file to configure the network.
Configuration of TP1 and TP2 in the/etc/hosts file is provided in listing 1. Note that the IP address varies depending on your network configuration. Here you can see the IP address assigned to the full host name and short host name of TP1 and TP2.
Listing 1. configure TP1 and TP2 in the/etc/hosts file
TP1 :~ # Cat/etc/hosts
#
# Hosts This file describes a number of hostname-to-address
# Mappings for the TCP/IP subsystem. It is mostly
# Used at boot time, when no name servers are running.
# On small systems, this file can be used instead of
# "Named" name server.
# Syntax:
#
# IP-Address Full-Qualified-Hostname Short-Hostname
#
127.0.0.1 localhost
# Special IPv6 addresses
: 1 localhost ipv6-localhost ipv6-loopback
You must install WebSphere Application Server on each computer. Use the LaunchPad installer to install the full application server according to the standard steps. You will be asked to enter the node name and host name for this installation:
On the first machine, enter TP1 as the node name and TP1 as the host name.
On the second machine, enter TP2 as the node name and TP2 as the host name.
(Make sure that TP1 and TP2 are valid entries on your DNS server or are in your/etc/hosts file ).
Figure 2 shows an example of setting the node name and host name during Application Server installation.
Figure 2. installed node and host name
Run WebSphere Application Server Installation Verification Test on two machines to Test and start Application Server. And start the ibm http server on TP1.
Install Deployment Manager Now that the Application Server has been installed on two computers, you can install Deployment Manager on TP1 as follows:
Start the installation program (LaunchPad) on the Deployment Manager CD ):
# Cd/media/cdrom
#./LaunchPad. sh
Click OK to select the English language for LaunchPad.
Figure 3. LaunchPad language
In the WebSphere Application Server Network Deployment LaunchPad window, click Install the product once.
Note: Be patient. do not click "Install the product" multiple times ". The application may take some time to complete initialization and respond to the next screen.
Figure 4. LaunchPad window
After selecting the language of Installation Wizard, select English and click OK.
Figure 5. Installation Wizard language
In the Installation Wizard Welcome window, click Next.
In the Software License Agreement window, read the Software License Agreement, select I accept the terms in the license agreement, and click Next.
Because you have already installed Application Server on the machine where Deployment Manager is installed, select Reconfigure the product to coexist with other versions of itself. We recommend that you set a new port and address for Deployment Manager. Record the new Admin Console Port and Soap Connector Address for future use. Click Next.
Figure 6. Installation Wizard -- reconfigure the product
In the function selection window, only Deployment Manager is required. Therefore, cancel the selection of Web Services and Embedded Messaging Client, and click Next.
Figure 7. Installation Wizard -- Select function
In the Next window, accept the default installation directory (/opt/WebSphere/DeploymentManager) and click Next.
Figure 8. Installation Wizard -- Installation directory
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