Preparing to upgrade DataStage Enterprise Plus

If you plan to upgrade DataStage Enterprise Plus on IBM® Cloud Pak for Data, a cluster administrator must update the cluster environment for DataStage Enterprise Plus.

Before you begin

Required role: To complete this task, you must be a cluster administrator.

Before you update the cluster for DataStage Enterprise Plus, ensure that:

The Cloud Pak for Data control plane is already upgraded on your Red Hat® OpenShift® cluster. For details, see Upgrading IBM Cloud Pak for Data.
The cluster meets the minimum requirements for DataStage Enterprise Plus. For details, see System requirements for services.
The machine from which you will run the commands meets the requirements described in Preparing your installation node.
On air-gapped clusters: You completed the steps in Preparing for air-gapped upgrades to download the required files for the service.

Tip: For a list of all available options, enter the following command:

./cpd-cli adm --help

Procedure

Prepare the cluster for DataStage Enterprise Plus by completing the appropriate task for your environment:
- Preparing clusters connected to the internet
- Preparing air-gapped clusters
Complete the tasks listed in What to do next

Preparing clusters connected to the internet

From your installation node:

Change to the directory where you placed the Cloud Pak for Data command-line interface and the repo.yaml file.
Log in to your Red Hat OpenShift cluster as an administrator:
```
oc login OpenShift_URL:port
```

Run the following command to see a preview of the list of resources that must be created or updated on the cluster:

./cpd-cli adm \
--repo ./repo.yaml \
--assembly ds \
--arch Cluster_architecture \  
--namespace Project \
--latest-dependency

Important: By default, this command gets the latest version of the assembly. If you want to install a specific version of DataStage Enterprise Plus, add the following line to your command after the --assembly flag:

--version Assembly_version \

The --latest-dependency flag gets the latest version of the dependent assemblies. If you remove the --latest-dependency flag, the installer will either leave the dependent assemblies at their current version or will update the dependent assemblies to the minimum required version.

Tell the person who will upgrade DataStage Enterprise Plus whether you used either of these flags. The upgrade command must be run with the same flags.

Replace the following values:

Variable	Replace with
`Assembly_version`	The version of DataStage Enterprise Plus that you want to install. The assembly versions are listed in System requirements for services.
`Cluster_architecture`	Specify the architecture of your cluster hardware: For x86-64 hardware, remove this flag or specify `x86_64`
`Project`	The project where the Cloud Pak for Data control plane is installed.

The command returns a list of the changes that you must make to your cluster to ensure that DataStage Enterprise Plus can run on your cluster.

Make the necessary changes to your cluster. You can choose one of the following methods to make the changes:
To automatically apply the changes to your cluster:
Re-run the cpd adm command with the --apply flag:
```
./cpd-cli adm \
--repo repo.yaml \
--assembly ds \
--arch Cluster_architecture \
--namespace Project \
--latest-dependency \
--apply
```
Replace the variables with the same values that you used the last time you ran the command.
To manually apply the changes to your cluster:

Follow the appropriate procedures from the Red Hat OpenShift documentation to complete the required tasks.

Preparing air-gapped clusters

From your installation node:

Change to the directory where you placed the Cloud Pak for Data command-line interface.
Log in to your Red Hat OpenShift cluster as an administrator:
```
oc login OpenShift_URL:port
```

Run the following command to see a preview the list of resources that must be created or updated on the cluster:

./cpd-cli adm \
--assembly ds \
--arch Cluster_architecture \
--namespace Project \
--load-from Image_directory_location \
--latest-dependency

Note: If the assembly was downloaded using the delta-images command, remove the --latest-dependency flag from the command. If you don't remove the --latest-dependency flag you will get an error indicating that the flag cannot be used.

Tell the person who will upgrade DataStage Enterprise Plus whether you used the --latest-dependency flag. If you run this command with the --latest-dependency flag, the upgrade command must also be run with the flag.

Replace the following values:

Variable	Replace with
`Cluster_architecture`	Specify the architecture of your cluster hardware: For x86-64 hardware, remove this flag or specify `x86_64`
`Project`	The project where the Cloud Pak for Data control plane is installed.
`Image_directory_location`	The location of the cpd-cli-workspace directory.

The command returns a list of the changes that you must make to your cluster to ensure that DataStage Enterprise Plus can run on your cluster.

Make the necessary changes to your cluster. You can choose one of the following methods to make the changes:
To automatically apply the changes to your cluster:
Re-run the cpd adm command with the --apply flag:
```
./cpd-cli adm \
--assembly ds \
--arch Cluster_architecture \
--namespace Project \
--load-from Image_directory_location \
--latest-dependency \
--apply
```
Replace the variables with the same values that you used the last time you ran the command.
To manually apply the changes to your cluster:

Follow the appropriate procedures from the Red Hat OpenShift documentation to complete the required tasks.

What to do next

See Upgrading DataStage Enterprise Plus to upgrade the service.