Preparing to install and upgrade services

After the IBM® Cloud Pak for Data control plane is installed, a Red Hat® OpenShift® project administrator can install the services that support your business needs on the platform. Use the guidance in the following sections to ensure that you have the required tools and information before you install or upgrade any services on your cluster.

Important: Ensure that you review the guidance in the following sections before you install or upgrade any services on Cloud Pak for Data:
  1. Preparing your installation node
  2. Ensuring you have access to the required images
  3. Ensuring that the required storage classes exist
  4. Collecting information about your cluster from your administrator

Preparing your installation node

You can install or upgrade Cloud Pak for Data services from a machine that resides outside of your Red Hat OpenShift Container Platform cluster.

You can run the installation and upgrade commands from the following types of machines:
  • Mac OS
  • Linux®
  • IBM Power® Systems
  • IBM Z®

In addition, the machine from which you run the commands must meet the appropriate requirements for your environment.

Requirements for the machine Cluster is connected to the internet Cluster is air-gapped
Can connect to the cluster. ✓ ✓
Is connected to the internet. ✓  
Has the oc command-line interface.
You can download the appropriate client tools for your operating system from Red Hat OpenShift:

Ensure that the version is compatible with the version of Red Hat OpenShift on your cluster.

 ✓ ✓
Has the Cloud Pak for Data command-line interface.

See Obtaining the installation files. Use the same version of the command-line interface each time you run the commands.

 ✓ ✓
Has the updated repo.yaml file in the same directory as the Cloud Pak for Data command-line interface.

See Obtaining the installation files.

 ✓  
Has the cpd-cli-workspace directory, which contains the required files.

See Preparing for air-gapped installations.

   ✓

Ensuring you have access to the required images

The images for Cloud Pak for Data services are stored in your registry server. How you obtain the images depends on your installation environment:

Clusters connected to the internet
The repo.yaml file that is shipped with the Cloud Pak for Data installer includes information about the default repository where many of the services are available. However, some services are not in the default repository. Review the information in Obtaining the installation files to determine whether you need to include any additional entries in your repo.yaml file.
Air-gapped clusters
If you are running Cloud Pak for Data on an air-gapped cluster, ensure that a Red Hat OpenShift administrator has completed the appropriate task to download the required files for the service:

Ensuring that the required storage classes exist

Each service has specific storage requirements. Work with your administrator to ensure that the required storage exists for the services that you plan to install.

Collecting information about your cluster from your administrator

To successfully install or upgrade Cloud Pak for Data services, you must have information about your Red Hat OpenShift cluster.

Tip: Print out this section for easy reference when installing or upgrading services.

Ensure that you collect the following information from your Red Hat OpenShift cluster administrator:

Required information Description
OpenShift_URL:port The URL and port number to use when logging in to your Red Hat OpenShift cluster.

Ensure that you have the appropriate credentials to log into the cluster using oc login.

Value:

Your cluster administrator should tell you whether your cluster is connected to the internet or is air-gapped.
Assembly_version The version of the assembly to install.

Value:
Cluster_architecture The architecture of the cluster hardware. Valid values include:
  • For x86-64 hardware, the value is x86_64
  • For POWER hardware, the value is ppc64le
  • For IBM Z hardware, the value is s390x

Value:

Project The project (namespace) where the Cloud Pak for Data control plane is installed.

Value:

Tethered_project_name The tethered project where you want to install the service.
Restriction
This option is not supported for all services. The installation instructions for the service indicate whether you can install the service in a tethered namespace.

Specify this option only if your cluster administrator instructs you to.

Value:

Storage_class_name The name of the storage class to use to provision storage for the service.

For information about the types of storage that the service supports, see System requirements for services.

If your cluster is not set up to use dynamic storage provisioning, work with an IBM Support representative to determine how you can specify persistent volume claims when you install the service.

For upgrade, specify the name of the storage class that was used when the service was installed. The storage class will be used for any new persistent volumes.

Value:

Registry_location The location to store the images in the registry server.

If you are running the installation or upgrade from a cluster that is connected to the internet, ensure that you have the appropriate credentials to push images to the registry server.

For upgrade, unless you changed the location of the registry server after you installed the service, use the same value that you specified when you installed the service.

You can run the following command to find the route to the registry:
oc get routes --all-namespaces

Value:

Guidance for Red Hat OpenShift registry users:
  • To determine the external route to the registry, run the appropriate command for your environment:
    • OpenShift 3.11:
      oc get route/docker-registry -n default --template {{.spec.host}}

      The command returns a route similar to docker-registry-default.apps.my_cluster_address

      Append the project name to the route. For example:
      docker-registry-default.apps.my_cluster_address/project
    • OpenShift 4.5 or 4.6:
      oc get route/default-route -n openshift-image-registry --template='{{ .spec.host }}'

      The command returns a route similar to default-route-openshift-image-registry.apps.my_cluster_address.

      Append the project name to the route. For example:
      default-route-openshift-image-registry.apps.my_cluster_address/project
  • When you specify a value for the Registry_location variable, ensure that you include the project name.
Registry_from_cluster The location from which pods on the cluster can pull images.

For upgrade, unless you changed the location of the registry server after you installed the service, use the same value that you specified when you installed the service.

Value:

Guidance for Red Hat OpenShift registry users:

You can run the following command to get the internal name of the Red Hat OpenShift registry service:
oc registry info --internal=true
  • The default service name is:
    • OpenShift 3.11:
      docker-registry.default.svc:5000/project
    • OpenShift 4.5 or 4.6:
      image-registry.openshift-image-registry.svc:5000/project
  • When you specify a value for the Registry_from_cluster variable, ensure that you include the project name.
Image_directory_location The location of the cpd-cli-workspace directory.
Restriction
This information applies only to air-gapped environments.
The cpd-cli-workspace directory is created when a cluster administrator runs the command to download the images. By default, the directory is created within the directory that contains the Cloud Pak for Data command-line interface. For details, see:

If you are installing the service from the same machine, the change to the directory indicated by the administrator.

If you are installing the service from a different machine, transfer the files from the machine where the download command was run.

Value: