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Upgrading the Kubernetes Version on an OVHcloud Managed Kubernetes Cluster

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Learn how to easily upgrade your cluster to the next minor version of Kubernetes.

The OVHcloud Managed Kubernetes service provides you with Kubernetes clusters without the hassle of installing or operating them.

On OVHcloud Managed Kubernetes, we have deployed an Upgrade to the next minor version of Kubernetes feature to upgrade your cluster from one version to the next (e.g., 1.27 to 1.28).

 

Requirements

  • an OVHcloud Managed Kubernetes cluster

 

Important information on the upgrading process

Before you launch the upgrade, please back up your cluster’s configuration, and check that your worker tools are compatible with this new version.

The upgrading process will try to do a rolling upgrade. Please ensure that your cluster includes enough worker nodes to allow for a rolling upgrade.

To minimize downtime for your pods and your overall service, we will drain each of your nodes, only moving on to the next node when the current one is functional (i.e. when the status changes to ‘Ready’). Your admin components and server API will also be updated.

Upgrade version - Upgrading version - step 1

Upgrade version - Upgrading version - step 2

This operation usually takes around five minutes per node in your cluster, but that can vary depending on your cluster type and size.

Once the update has been performed, you cannot revert to the previous version.

 

Instructions

Step 1 - Ask for a minor version upgrade on the OVHcloud Control Panel

  1. Log into the OVHcloud Control Panel. Go to the Public Cloud section at the top, then Managed Kubernetes Service in the left-hand menu.

    Upgrade version - Upgrading version - step 1

  2. Click the ... button at the right end button of your Kubernetes cluster and choose Manage cluster.

    Upgrade version - Upgrading version - step 2

    Warning

    NOTE: Your security policy must be set at least to “Minimum unavailability”. Otherwise, the upgrade will fail.
    Upgrade version - Upgrading version - step 3

  1. On the Management section, click on Upgrade to the next minor version.

    Upgrade version - Upgrading version - step 4

  1. Click on Confirm.

    Upgrade version - Upgrading version - step 5

 

Step 2 - Wait for the upgrade to end

The upgrading process can take several minutes (around five minutes per node in your cluster). During that time, a message on the OVHcloud Control Panel warns you that the cluster is being upgraded:

Upgrade version - Upgrading version - step 6

 

Go further

Browse all the Managed Kubernetes Service (MKS) guides.

Browse the rest of the OVHcloud US documentation for guides on our other products and services.

Learn more about Managed Kubernetes on the OVHcloud US website.