Upgrading DataStage from Version 4.8 to Version 5.1

An instance administrator can upgrade DataStage from IBM Cloud Pak® for Data Version 4.8 to IBM Software Hub Version 5.1.

Who needs to complete this task?

Instance administrator To upgrade DataStage, you must be an instance administrator. An instance administrator has permission to manage software in the following projects:

The operators project for the instance: The operators for this instance of DataStage are installed in the operators project. In the upgrade commands, the ${PROJECT_CPD_INST_OPERATORS} environment variable refers to the operators project.
The operands project for the instance: The custom resources for the control plane and DataStage are installed in the operands project. In the upgrade commands, the ${PROJECT_CPD_INST_OPERANDS} environment variable refers to the operands project.

When do you need to complete this task?

Review the following options to determine whether you need to complete this task:

If you want to upgrade the IBM Software Hub control plane and one or more services at the same time, follow the process in Upgrading an instance of IBM Software Hub instead.
If you didn't upgrade DataStage when you upgraded the IBM Software Hub control plane, complete this task to upgrade DataStage.
Repeat as needed If you are responsible for multiple instances of IBM Software Hub, you can repeat this task to upgrade more instances of DataStage on the cluster.

Information you need to complete this task

Review the following information before you upgrade DataStage:

Version requirements: All the components that are associated with an instance of IBM Software Hub must be installed at the same release. For example, if the IBM Software Hub control plane is at Version 5.1.3, you must upgrade DataStage to Version 5.1.3.

Environment variables

The commands in this task use environment variables so that you can run the commands exactly as written.

If you do not have the script that defines the environment variables, see Setting up installation environment variables.
To use the environment variables from the script, you must source the environment variables before you run the commands in this task. For example, run:
```
source ./cpd_vars.sh
```

Common core services: DataStage requires the IBM Software Hub common core services.
If the common core services are not at the correct version in the operands project for the instance, the common core services are automatically upgraded when you upgrade DataStage. The common core services upgrade increases the amount of time the upgrade takes to complete.

Before you begin

This task assumes that the following prerequisites are met:

Prerequisite	Where to find more information
The cluster meets the minimum requirements for DataStage.	If this task is not complete, see System requirements.
The workstation from which you will run the upgrade is set up as a client workstation and has the following command-line interfaces: IBM Software Hub CLI: `cpd-cli` OpenShift® CLI: `oc`	If this task is not complete, see Updating client workstations.
The IBM Software Hub control plane is upgraded.	If this task is not complete, see Upgrading an instance of IBM Software Hub.
For environments that use a private container registry, such as air-gapped environments, the DataStage software images are mirrored to the private container registry.	If this task is not complete, see Mirroring images to a private container registry.
For environments that use a private container registry, such as air-gapped environments, the `cpd-cli` is configured to pull the `olm-utils-v3` image from the private container registry.	If this task is not complete, see Pulling the olm-utils-v3 image from the private container registry.

Procedure

Complete the following tasks to upgrade DataStage:

Specifying your DataStage edition
Upgrading the service
Validating the upgrade
Upgrading existing service instances
What to do next

Specifying your DataStage edition

DataStage is available in two different editions: DataStage Enterprise and DataStage Enterprise Plus. You must specify which edition to install.

Set the ${DATASTAGE_TYPE} variable to the edition of DataStage that you want to install:

For DataStage Enterprise, run
```
export DATASTAGE_TYPE=datastage_ent
```

For DataStage Enterprise Plus, run

export DATASTAGE_TYPE=datastage_ent_plus

Upgrading the service

Important: The Operator Lifecycle Manager (OLM) objects for DataStage were updated when you upgraded the IBM Software Hub platform. The

cpd-cli
manage
apply-olm

updates all of the OLM objects in the operators project at the same time.

To upgrade DataStage:

Log the cpd-cli in to the Red Hat® OpenShift Container Platform cluster:
```
${CPDM_OC_LOGIN}
```
Remember: CPDM_OC_LOGIN is an alias for the cpd-cli manage login-to-ocp command.

Update the custom resource for DataStage.

cpd-cli manage apply-cr \
--components=${DATASTAGE_TYPE} \
--release=${VERSION} \
--cpd_instance_ns=${PROJECT_CPD_INST_OPERANDS} \
--license_acceptance=true \
--upgrade=true

Validating the upgrade

DataStage is upgraded when the apply-cr command returns:

[SUCCESS]... The apply-cr command ran successfully

If you want to confirm that the custom resource status is Completed, you can run the cpd-cli manage get-cr-status command:

Upgrading existing service instances

The service instances are automatically upgraded when you upgrade DataStage.

What to do next

The service is ready to use. See Transforming data with DataStage.