4.4. Updating a cluster by using the web console

Procedure

1. From the web console, click Administration > Cluster Settings and review the contents of the Overview tab.

2. For production clusters, ensure that the CHANNEL is set to the correct channel for the version that you want to update to, your current minor version, such as stable-4.5.

   重要

   For production clusters, you must subscribe to a stable-* or fast-* channel.

   • If the UPDATE STATUS is not Updates Available, you cannot upgrade your cluster.
   • The DESIRED VERSION indicates the cluster version that your cluster is running or is updating to.
3. Click Updates Available, select a version to update to, the highest available version and click Update. The UPDATE STATUS changes to Updating, and you can review the progress of the Operator upgrades on the Cluster Operators tab.

4. After the update completes and the Cluster Version Operator refreshes the available updates, check if more updates are available in your current channel.

   • If updates are available, continue to perform updates in the current channel until you can no longer update.
   • If no updates are available, change the CHANNEL to the stable-* or fast-* channel for the next minor version, and update to the version that you want in that channel.

   You might need to perform several intermediate updates until you reach the version that you want.

   注意

   When you update a cluster that contains Red Hat Enterprise Linux (RHEL) worker machines, those workers temporarily become unavailable during the update process. You must run the upgrade playbook against each RHEL machine as it enters the NotReady state for the cluster to finish updating.