This section describes how to prepare upgrade from Che 6.x to Che 7.3 on OpenShift using the Operator.

Uninstalling the Eclipse Che 6.x Operator means that the OpenShift cluster do not receive any updates of the Che 6.x Operator. As a consequence, the existing Che instances do not receive any update. The Che instances that are already present, including their database, remains present.

Prerequisites

  • And administrative account on an OpenShift 4 instance.

  • Eclipse Che 6.x Operator is installed on this OpenShift 4 instance.

  • A running instance of Che 6.x on this OpenShift 4 instance.

Procedure

  1. In all running workspaces in the Che 6.x instance, save and push changes back to the git repositories.

  2. Shut down all workspaces in the Che 6.x instance.

  3. Open the OpenShift console.

  4. Navigate to Operators > Installed Operators.

  5. Click on Eclipse Che 6.x.

  6. Click on the Actions button on the top right.

  7. A drop-down menu appears.

  8. Click on Uninstall Operator to uninstall the Che 6.x Operator.

  9. Accept the selected option Also completely remove the Operator from the selected namespace.

  10. Click on the Remove button.

  11. Navigate to Operators > Installed Operators.

  12. The Operator is removed from the list of installed operators.