Chapter 4. Using the Red Hat Decision Manager installer

This section describes how to install Decision Server and the headless Decision Manager controller using the installer JAR file. The JAR file is an executable file that installs Red Hat Decision Manager in an existing Red Hat JBoss EAP 7.2 server installation. You can run the installer in interactive or command line interface (CLI) mode.

Note

The Red Hat Decision Manager JAR file installer does not support the Red Hat JBoss EAP distribution installed by yum or RPM Package Manager. If you want to install Red Hat Decision Manager in this type of Red Hat JBoss EAP installation, download the Red Hat Decision Manager 7.2 Deployable for Red Hat JBoss EAP 7.2 file and follow the steps in Chapter 5, Installing Red Hat Decision Manager from ZIP files.

Note

Because IBM JDK cannot use keystores generated on other JDKs, you cannot install Red Hat Decision Manager into an existing Red Hat JBoss EAP installation running on IBM JDK with a keystore generated on another JDK.

Next steps:

Follow the instructions in one of the following sections:

4.1. Using the installer in interactive mode

The installer for Red Hat Decision Manager is an executable JAR file. You can use it to install Red Hat Decision Manager in an existing Red Hat JBoss EAP 7.2 server installation.

Note

For security reasons, you should run the installer as a non-root user.

Prerequisites

  • A backed-up Red Hat JBoss EAP 7.2 or higher server installation is available.
  • Sufficient user permissions to complete the installation are granted.
  • The JAR binary is included in $PATH environment variable. On Red Hat Enterprise Linux, it is included in the java-$JAVA_VERSION-openjdk-devel package.

    Note

    Red Hat Decision Manager is designed to work with UTF-8 encoding. If a different encoding system is used by the underlying JVM, unexpected errors might occur. To ensure UTF-8 is used by the JVM, use the "-Dfile.encoding=UTF-8" system property.

Procedure

  1. In a terminal window, navigate to the directory where you downloaded the installer JAR file and enter the following command:

    java -jar rhdm-installer-7.2.0.jar
    Note

    When running the installer on Windows, you may be prompted to provide administrator credentials during the installation. To prevent this requirement, add the izpack.mode=privileged option to the installation command:

    java -Dizpack.mode=privileged -jar
    rhdm-installer-7.2.0.jar

    Furthermore, when running the installer on a 32-bit Java virtual machine, you might encounter memory limitations. To prevent this issue, run this command:

    java -XX:MaxHeapSize=4g -jar
    rhdm-installer-7.2.0.jar

    The graphical installer displays a splash screen and a license agreement page.

  2. Click I accept the terms of this license agreement and click Next.
  3. Specify the Red Hat JBoss EAP 7.2 server home where you want to install Red Hat Decision Manager and click Next.
  4. Select the components that you want to install and click Next.

    Note

    You can install Decision Central and Decision Server on the same server. However, you should install Decision Central and Decision Server on different servers in production environments. To do this, run the installer twice.

  5. Create a user and click Next. By default, the new user is given the admin, kie-server, and rest-all roles. To select another role, deselect admin. For more information, see Chapter 2, Roles and users.

    Note

    Make sure that the specified user name is not the same as an existing user, role, or group. For example, do not create a user with the user name admin.

    The password must have at least eight characters and must contain at least one number and one non-alphanumeric character, but not & (ampersand).

    Make a note of the user name and password. You will need them to access Decision Central and Decision Server.

  6. On the Installation Overview page, click Next to start the installation. The Installation Overview page lists the components that you will install.
  7. When the installation has completed, click Next.
  8. When Processing finished appears at the top of the screen, click Next to complete the installation.
  9. If desired, click Generate Installation Script and Properties File to save the installation data in an XML file, and then click Done. You can use this file to automatically install Red Hat Decision Manager on the same type of server. Note that you must change the installpath parameter in the XML file to specify the path of the new server that you want to install Red Hat Decision Manager on. Enter the following command to perform an installation with the XML file:

    java -jar rhdm-installer-7.2.0.jar <path-to-file>

You have successfully installed Red Hat Decision Manager using the installer.

4.2. Using the installer in CLI mode

You can run the Red Hat Decision Manager installer through the command-line interface (CLI).

Note

For security reasons, you should run the installer as a non-root user.

Prerequisites

  • A backed-up Red Hat JBoss EAP 7.2 or higher server installation is available.
  • Sufficient user permissions to complete the installation are granted.
  • The JAR binary is included in the $PATH environment variable. On Red Hat Enterprise Linux, it is included in the java-$JAVA_VERSION-openjdk-devel package.

    Note

    Red Hat Decision Manager is designed to work with UTF-8 encoding. If a different encoding system is used by the underlying JVM, unexpected errors might occur. To ensure UTF-8 is used by the JVM, use the "-Dfile.encoding=UTF-8" system property.

Procedure

  1. In a terminal window, navigate to the directory where you downloaded the installer file and enter the following command:

    java -jar rhdm-installer-7.2.0.jar -console

    The command-line interactive process will start and display the End-User License Agreement.

    press 1 to continue, 2 to quit, 3 to redisplay.
  2. Read the license agreement, enter 1, and press Enter to continue:

    Specify the home directory of one of the following servers:  Red Hat JBoss EAP 7.2 or Red Hat JBoss Web Server 5.0.1
  3. Enter the parent directory of an existing Red Hat JBoss EAP 7.2 installation.

    The installer will verify the location of the installation at the location provided. Enter 1 to confirm and continue.

    Note

    You can install Decision Central and Decision Server on the same server. However, you should install Decision Central and Decision Server on different servers in production environments.

  4. Follow the instructions in the installer to complete the installation.

    Note

    When you create the user name and password, make sure that the specified user name does not conflict with any known title of a role or a group. For example, if there is a role called admin, you should not create a user with the user name admin.

    The password must have at least eight characters and must contain at least one number and one non-alphanumeric character (not including the character &).

    Make a note of the user name and password. You will need them to access Decision Central and Decision Server.

  5. When the installation has completed, you will see this message:

    Would you like to generate an automatic installation script and properties file?
  6. Enter y to create an XML file that contains the installation data, or n to complete the installation. If you enter y, you are prompted to specify a path for the XML file.
  7. Enter a path or press the Enter key to accept the suggested path.
  8. If you installed only Decision Central, repeat these steps to install Decision Server on a separate server.