Creating a IBM Storage Scale Tiebreaker configuration pattern

Use the Pattern Builder to create a virtual application pattern for deploying a IBM Storage Scale Server Tiebreaker configuration.

1. Click Patterns > Virtual Application Patterns.
2. Click Create New.
3. To build your virtual application pattern:
   1. Select the GPFS Pattern Type 1.2 pattern type from the menu.
   2. Select the GPFS Tiebreak virtual application template.
   3. Click Start Building.
      The Pattern Builder opens in a new window where you can add components and policies.
4. In the pattern properties pane, specify the following information:

   Name

   The name of the virtual application pattern, such as IBM Storage Scale Server - Tiebreaker Config.

   Description

   The description of the virtual application pattern. This field is optional.

   Type

   Leave Pattern selected to create a virtual application pattern or select Pattern Template to create a virtual application template that is used as the basis for creating other virtual application patterns.

   Lock option for plug-in usage

   Specify how this virtual application pattern is affected by upgrades to the pattern type or to IBM® Foundation Pattern.

   Unlock plug-ins

   If the pattern type is upgraded, use the latest versions of pattern type plug-ins. If IBM Foundation Pattern is upgraded, use the latest version.

   Lock all plug-ins except Foundation plug-ins

   If the pattern type is upgraded, do not change the version of the plug-ins that are associated with this virtual application pattern. If IBM Foundation Pattern is upgraded, use the latest version.

   Lock all plug-ins

   Do not change the version of plug-ins or the version of the IBM Foundation Pattern associated with this virtual application pattern when an upgrade occurs.

   Note: If you select Lock all plug-ins except Foundation plug-ins or Lock all plug-ins, you can view a list of which plug-ins are locked. Click the Source tab in Pattern Builder. The application model source is displayed. Search for the element plugins to view the list.

5. Click Save and save the virtual pattern definition.
   You can alternatively click Save As to save as a new virtual application template that you can use to create other virtual application patterns.
6. Configure the IBM Storage Scale Server component in Pattern Builder.
   1. With the IBM Storage Scale Server component selected in the canvas, configure the following settings in the properties pane:

      Name

      A unique name that identifies the IBM Storage Scale Server component in the Pattern Builder.

      Key Management section

      You can optionally provide the various SSH keys that the deployed IBM Storage Scale configuration uses. You can also specify keys at deployment time. These keys are generated on each deployment automatically if no keys are provided by the deployer. You can retrieve keys that are generated or updated after deployment, by using the Manage > Operations > GPFS_Manager operations view. If you do specify any keys at deployment time, ensure that you specify both private and public keys, using a tar.gz compression format.

      You can specify the following types of keys:

      IBM Storage Scale Manager key

      This key is used by the IBM Storage Scale Manager virtual machines to communicate with other IBM Storage Scale Manager virtual machines.

      For example, when you attach a IBM Storage Scale Mirror or IBM Storage Scale Tiebreaker configuration to a IBM Storage Scale Primary configuration, all three managers, from the Primary, Mirror, and Tiebreaker deployments must have the same IBM Storage Scale Managers key installed. If not, you receive an error message indicating that the IBM Storage Scale Manager virtual machine from the Primary configuration is unable to communicate with the IBM Storage Scale Manager from the Mirror or Tiebreaker configurations. You must then install the same IBM Storage Scale Manager key on all managers, and try to attach again.

      When you create the IBM Storage Scale Server component by using the virtual application template, a default IBM Storage Scale Managers key, , is provided for you in this field.

      All IBM Storage Scale Server virtual application templates use the same default tar.gz file for the IBM Storage Scale Managers key, so when you deploy Primary, Mirror, or Tiebreaker configurations using these virtual application templates, their managers can already communicate with each other because they are sharing the same key.

      If you need to install the same IBM Storage Scale Managers key in these various configurations, you can follow this procedure:

      1. Retrieve the IBM Storage Scale Managers key from the Primary configuration. Select Manage > Operations > GPFS_Manager > Manage Keys > Retrieve Key and select Manager.
      2. Pass the retrieved tar.gz file to the Mirror or Tiebreaker configurations by using either of the following methods:
         • Specify the tar.gz file in the Key Management section of the configuration during deployment time.
         • If the configurations are already deployed, select Manage > Operations > GPFS_Manager > Manage Keys > Install Key, then select Manager, and specify the tar.gz file obtained from the Primary configuration.

      IBM Storage Scale cluster key

      This key is installed on all of the IBM Storage Scale Server nodes, and is used by the IBM Storage Scale application to communicate within the nodes server cluster.

      IBM Storage Scale Clients key

      This key is used to access the IBM Storage Scale Manager from a IBM Storage Scale Client. This is required so that the IBM Storage Scale Client can send requests to the IBM Storage Scale Manager virtual machine and pass any extra parameters required to add itself to the IBM Storage Scale cluster.

      IBM Storage Scale Configurations section

      In this section you select the type of IBM Storage Scale Server configuration to deploy. Available choices include:

      • Primary Configuration
      • Mirror Configuration
      • Passive Configuration
        Note: This configuration type is not supported in Cloud Pak System Software for Power®.
      • Tiebreaker

      Ensure that Tiebreaker is selected to deploy a IBM Storage Scale Server tiebreaker instance that can be attached to a IBM Storage Scale Server Primary configuration with an attached mirror configuration.

      Configure the following attributes:

      File System name for selected shared volumes

      The file system name for the shared volumes (disks) that are used by the IBM Storage Scale shared file system. Do not specify the text string IBM Storage Scale string in the file system name.

      Note: The file system name must match the file system name specified in the IBM Storage Scale Server Primary configuration, or the attempt to attach the Tiebreaker configuration will fail.

7. Click Save.