Moving from WebSphere Application Server Liberty Base to Open Liberty

You can move from using WebSphere Application Server Liberty Base to Open Liberty.

About this task

HCL Workload Automation installation package contains Open Liberty, but both WebSphere Application Server Liberty Base and Open Liberty are supported. If you have a WebSphere Application Server Liberty Base license and the product is already installed in your environment, and you plan to continue using it with HCL Workload Automation, no action is required.

If you have WebSphere Application Server Liberty Base installed in your environment, but you want to move to Open Liberty, follow the procedure described below:

Procedure

  1. Download Open Liberty from Get started with Open Liberty.

    Check the release notes or the latest readme to ensure the latest Open Liberty version is supported by HCL Workload Automation. You can find the Release Notes at HCL Workload Automation Release Notes, while the link to the latest readme is available in ../../distr_readmes.html.

  2. Stop the application server as described in Application server - starting and stopping.
    Also stop HCL Workload Automation and all other applications running on the WebSphere Application Server Liberty Base instance.
  3. Optionally create a backup of the current WebSphere Application Server Liberty Base instance in a directory different from the Open Liberty installation directory.
  4. Uninstall WebSphere Application Server Liberty Base.
  5. Extract all data from the .zip folder:
    On Windows operating systems
    unzip <openliberty_download_dir>\openliberty-<version>.zip -d <install_dir>
--acceptLicense
    On UNIX operating systems
    unzip <openliberty_download_dir>/openliberty-<version>.zip -d <install_dir>
--acceptLicense
    where:
    <openliberty_download_dir>
    The directory where you downloaded Open Liberty.
    install_dir
    The directory where you want to install Open Liberty.
    Note: Install the new Open Liberty in the exact location of the previous WebSphere Application Server Liberty Base installation.
  6. Assign reading, writing and processing permissions to libraries that are contained in the folder: 
    chmod -R 755 /open_liberty_installation_directory/wlp/lib/versions/
    where:
    open_liberty_installation_directory
    The directory where you installed Open Liberty.
  7. Restart the application server as described in Application server - starting and stopping.
    Also restart HCL Workload Automation and all other applications running on the Open Liberty instance.