Installation Procedure

You can run the Message Queue Installer in any of three modes:

• In GUI (graphical user interface) mode, the Installer presents a series of graphical screens with which you interact using mouse clicks and keyboard text entry.

• In silent mode, the Installer operates from a predefined answer file representing your responses to the GUI screens. This allows you to script the installation process in advance and then perform it in batch mode without actually displaying the GUI (or text) screens and responding to them interactively.

  ---

  Note –

  Text mode installation is not supported in Message Queue 4.4 Update 1.

  ---

The following sections describe each of the two modes of Installer operation.

Installing in GUI Mode

The following procedure shows how to use the Message Queue Installer in GUI mode to install the Message Queue 4.4 Update 1 product on your Linux system.

To Install Message Queue in GUI Mode

1. Create a temporary directory.

   From your system’s command line, enter the command

   % mkdir tempDir

   where tempDir is any name you choose for your temporary directory.

2. Download the Message Queue Installer to the temporary directory.

   The Installer is available for download from the Message Queue product Web site at

   http://www.sun.com/software/products/message_queue

   It is distributed as a compressed archive (.zip) file named

      mq4_4-installer-Linux_X86.zip
   

3. Go to the temporary directory.

   Enter the following command:

   % cd tempDir

   where tempDir is the temporary directory to which you downloaded the Installer in step 3.

4. Decompress the Installer archive.

   Enter the following command:

   % unzip mq4_4-installer-Linux_X86.zip

   This creates a subdirectory named

      mq4_4-installer
   

   containing the files needed for Message Queue 4.4 Update 1 installation.

5. Switch to the Installer subdirectory.

   Enter the following command:

   % cd mq4_4-installer

6. Set the JAVA_HOME environment variable to point to a valid version of JRE. Alternatively, you can use the -j installer option to point to a valid JRE version.

7. Start the Installer.

   Enter the following command:

   % ./installer

   If you have not already set JAVA_HOME to point to a valid version of JRE, run the installer with the -j option as follows:

   % ./installer -j path_to_JRE_installation

   The Installer’s Welcome screen (Figure 3–1) appears.

   Figure 3–1 Installer Welcome Screen

   
   

8. Click the Next button.

   The Installer’s License screen (Figure 3–2) appears.

   Figure 3–2 Installer License Screen

   
   

9. Read and accept the product license agreement.

   Installation and use of the Message Queue product are subject to your acceptance of the license agreement. You must read and accept the terms of the license agreement before installing the product.

   1. Read the product license agreement.

   2. Make sure the radio button labeled “I accept the terms in the license agreement” is selected.

      If you instead select “I do not accept the terms in the license agreement,” the Next button becomes disabled. You cannot proceed with installation without accepting the license terms.

   3. Click the Next button.

      The Install Home screen appears.

10. Specify the installation directory.

    Enter the path to the installation home directory in the text field, or use the button marked with an ellipsis (…) to browse to it interactively.

    ---

    Note –

    If you enter a path to a directory that does not exist on your system, the Installer will create the directory for you automatically.

    ---

11. Click Next.

    The Installer’s JDK Selection screen (Figure 2–3) appears.

    Figure 3–3 Installer JDK Selection Screen

    
    

12. Specify the version of the JDK for Message Queue to use.

    1. Select a JDK.

       You can do this in any of these ways:

       • Choose a JDK installation that is already installed on your system.

         The drop-down menu under the option “Choose a Java^TM SDK from the list below” lists existing JDKs found in standard locations on your system. You can use this option to specify one of these JDKs for Message Queue to use.

       • Provide an explicit path to an existing JDK.

         To use a JDK from a location other than the standard ones, enter its path in the text field under the option “Type in a Java SDK location below,” or use the button marked with an ellipsis (…) to browse to it interactively.

    2. Click the Next button.

       The Installer’s Ready screen (Figure 2–4) appears.

       Figure 3–4 Installer Ready Screen

       
       

13. Click Install to begin the installation.

    The Installer’s Progress screen (Figure 3–5) appears, tracking the progress of the installation as it proceeds.

    Figure 3–5 Installer Progress Screen

    
    

    When installation is complete, the Installer's Sun Connection Registration screen (Figure 3–6) appears.

    Figure 3–6 Sun Connection Registration Screen

    
    

14. Register Message Queue with Sun Connection.

    Sun Connection is a Sun-hosted service that helps you track, organize, and maintain Sun hardware and software. When you register a Message Queue installation with Sun Connection, information such as the release version, host name, operating system, installation date, and other such basic information is securely transmitted to the Sun Connection database. The Sun Connection inventory service can help you organize your Sun hardware and software, while the update service can inform you of the latest available security fixes, recommended updates, and feature enhancements.

    Registration requires that you have a Sun Online account or create one. If you do not already have an account, the installer provides the following screen (Figure 3–7) for creating a Sun Online account:

    Figure 3–7 Create Sun Online Account Screen

    
    

    ---

    Note –

    If you choose not to register Message Queue during installation, you can subsequently register Message Queue by running the installer in register-only mode, as follows:

    % ./installer -r

    The register-only mode requires that Message Queue 4.4 Update 1 already be installed and will display only the installer screens related to registration.

    ---

    When Sun Connection registration is complete, the Installer’s Summary screen (Figure 3–8) appears, summarizing the steps that were performed during installation.

    Figure 3–8 Installer Summary Screen

    
    

    You can click the links on this screen for a detailed summary report and a log file giving more details on the installation.

15. Click the Exit button to dismiss the Summary screen.

    Message Queue installation is now complete.

    ---

    Tip –

    After installation is complete, you can check that the expected versions of Message Queue and the Java runtime have been installed by navigating to the mqInstallHome/mq/bin directory and executing the following command:

    % imqbrokerd -version

    The output from this command identifies the versions of Message Queue and the JDK that are installed on your system.

    ---

Installing in Silent Mode

In silent mode, the Installer operates from a predefined answer file representing your responses to the GUI screens. This allows you to script the installation process in advance and then perform it in batch mode without actually displaying the GUI screens and responding to them interactively.

To create an answer file, start the Installer with the -n option:

% ./installer -n answerFile

where answerFile identifies the file in which to record your responses. This causes the Installer to execute a “dry run,” presenting the sequence of GUI screens without actually performing the installation. Your input responses are recorded in the specified answer file. You can then perform the installation at a later time by starting the Installer with the -s (“silent”) option, specifying the same answer file:

% ./installer -s -a answerFile

This performs a silent installation as defined by the answer file, without visibly displaying the GUI (or text) screens.

Manually Configuring the Java Runtime Environment

The Message Queue Installer’s JDK Selection screen is not the only way to specify a version of the Java Runtime Environment for Message Queue to use. The JRE used by the Message Queue command line utilities (imqadmin, imqbrokerd, imqcmd, imqobjmgr, imqdbmgr, imqusermgr, imqkeytool) is determined by the following sources, in order of precedence:

1. The -jrehome or -javahome command line option to the imqbrokerd command. (If both are specified, the one occurring last on the command line takes precedence).

2. The J2SE file location specified in the jdk.env file. (This file is deprecated, but is still supported for backward compatibility. For historical reasons, it has higher priority than anything else except option 1.)

3. The IMQ_JAVAHOME environment variable.

4. The environment variable IMQ_DEFAULT_JAVAHOME in the imqenv.conf file.

5. The system default locations, as specified in the documentation for your platform.

To check which version of the Java runtime Message Queue will use, enter the following command:

% imqbrokerd -version

The output from this command includes the version and pathname of the configured JRE: for example,

   Java Runtime: 1.5.0_12 Sun Microsystems Inc. /usr/java/jdk1.5.0_12/jre

When you specify a JRE location through the Installer’s JDK Selection screen, the Installer saves that location as the value of IMQ_DEFAULT_JAVAHOME in the imqenv.conf file (option 4 in the list above). On Linux, this file is located at

mqInstallHome/etc/mq/imqenv.conf

After a successful Message Queue installation, it should include something like the following:

   IMQ_DEFAULT_JAVAHOME=/usr/java/jdk1.5.0_12

You can override this setting, however, either by editing the imqenv.conf file or by setting one of the other options higher in the list. This can be useful, for instance, for testing or reconfiguring the broker when a newer JRE version becomes available. Understanding how the JRE is determined can also help in troubleshooting problems. For instance, if the imqbrokerd -version command shows that Message Queue is using an unexpected JRE, it may be that one of the higher-precedence options has been set inadvertently (such as by an old jdk.env file that should have been deleted).

Configuring Message Queue for Automatic Startup

To configure the Message Queue message broker to start up automatically at boot time, become the root user and edit the configuration file mqInstallHome/etc/mq/imqbrokerd.conf. Table 3–2 shows the startup properties you can set in this file.

YESNO

YESNO