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About cluster updates in a disconnected environment - Updating a cluster in a disconnected environment | Disconnected environments | OpenShift Container Platform 4.17
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About cluster updates in a disconnected environment

A disconnected environment is one in which your cluster nodes cannot access the internet or where you want to manage update recommendations and release images locally for policy or performance purposes. This section covers mirroring OpenShift Container Platform images, managing an OpenShift Update service, and performing cluster updates in a disconnected environment.

Mirroring OpenShift Container Platform images

To update your cluster in a disconnected environment, your cluster environment must have access to a mirror registry that has the necessary images and resources for your targeted update. A single container image registry is sufficient to host mirrored images for several clusters in the disconnected network. The following page has instructions for mirroring images onto a repository in your disconnected cluster:

Performing a cluster update in a disconnected environment

You can use one of the following procedures to update a disconnected OpenShift Container Platform cluster:

Uninstalling the OpenShift Update service from a cluster

You can use the following procedure to uninstall a local copy of the OpenShift Update service (OSUS) from your cluster: