Chapter 8. Upgrading
The upgrade of the OpenShift sandboxed containers components consists of the following three steps:
-
Upgrade OpenShift Container Platform to update the
Kataruntime and its dependencies. - Upgrade the OpenShift sandboxed containers Operator to update the Operator subscription.
You can upgrade OpenShift Container Platform before or after the OpenShift sandboxed containers Operator upgrade, with the one exception noted below. Always apply the KataConfig patch immediately after upgrading OpenShift sandboxed containers Operator.
8.1. Upgrading resources
The OpenShift sandboxed containers resources are deployed onto the cluster using Red Hat Enterprise Linux CoreOS (RHCOS) extensions.
The RHCOS extension sandboxed containers contains the required components to run OpenShift sandboxed containers, such as the Kata containers runtime, the hypervisor QEMU, and other dependencies. You upgrade the extension by upgrading the cluster to a new release of OpenShift Container Platform.
For more information about upgrading OpenShift Container Platform, see Updating Clusters.
8.2. Upgrading the Operator
Use Operator Lifecycle Manager (OLM) to upgrade the OpenShift sandboxed containers Operator either manually or automatically. Selecting between manual or automatic upgrade during the initial deployment determines the future upgrade mode. For manual upgrades, the OpenShift Container Platform web console shows the available updates that can be installed by the cluster administrator.
For more information about upgrading the OpenShift sandboxed containers Operator in Operator Lifecycle Manager (OLM), see Updating installed Operators.
