第 1 章 Updating a cluster between minor versions
You can update, or upgrade, an OpenShift Container Platform cluster between minor versions.
Because of the difficulty of changing update channels by using
oc, use the web console to change the update channel. It is recommended to complete the update process within the web console. You can follow the steps in Updating a cluster within a minor version by using the CLI to complete the update after you change to a 4.5 channel.
Have access to the cluster as a user with
adminprivileges. See Using RBAC to define and apply permissions.
- Have a recent etcd backup in case your upgrade fails and you must restore your cluster to a previous state.
- Ensure all Operators previously installed through Operator Lifecycle Manager (OLM) are updated to their latest version in their latest channel. Updating the Operators ensures they have a valid upgrade path when the default OperatorHub catalogs switch from the current minor version to the next during a cluster upgrade. See Upgrading installed Operators for more information.
unsupportedConfigOverrides section to modify the configuration of an Operator is unsupported and might block cluster upgrades. You must remove this setting before you can upgrade your cluster.