Part I. Deploying a Red Hat Decision Manager environment on Red Hat OpenShift Container Platform 4 using Operators

Prerequisites

• A Red Hat OpenShift Container Platform 4 environment is available. For the exact versions of Red Hat OpenShift Container Platform that the current release supports, see Red Hat Decision Manager 7 Supported Configurations.
• The OpenShift project for the deployment is created.
• You are logged into the project using the OpenShift web console.

• The following resources are available on the OpenShift cluster. Depending on the application load, higher resource allocation might be necessary for acceptable performance.

  • For an authoring environment, 4 gigabytes of memory and 2 virtual CPU cores for the Business Central pod. In a high-availability deployment, these resources are required for each replica and two replicas are created by default.
  • 2 gigabytes of memory and 1 virtual CPU core for each replica of each KIE Server pod.

  • In a high-availability authoring deployment, additional resources according to the configured defaults are required for the Red Hat AMQ, and Red Hat Data Grid pods.

    Note

    The default values for MaxMetaspaceSize are:

    • Business Central images: 1024m
    • KIE Server images: 512m
    • For other images: 256m

• Dynamic persistent volume (PV) provisioning is enabled. Alternatively, if dynamic PV provisioning is not enabled, enough persistent volumes must be available. By default, the deployed components require the following PV sizes:

  • By default, Business Central requires one 1Gi PV. You can change the PV size for Business Central persistent storage.
• If you intend to deploy a high-availability authoring environment, your OpenShift environment supports persistent volumes with ReadWriteMany mode. If your environment does not support this mode, you can use NFS to provision the volumes. For information about access mode support in OpenShift public and dedicated clouds, see Access Modes in Red Hat OpenShift Container Platform documentation.