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Upgrade

All components in Elemental are managed using Kubernetes. Below is how to use Kubernetes approaches to upgrade the components.

Elemental node upgrade​

Elemental nodes are upgraded with the Elemental Operator. Refer to the Elemental Operator documentation for complete information.

Upgrade can be achieve either with CLI or UI:

Upgrade via command line interface​

There are two ways of selecting nodes for upgrading. Via a cluster target, which will match ALL nodes in a cluster that matches our selector or via node selector, which will match nodes based on the node labels. Node selector allows us to be more targeted with the upgrade while cluster selector just selects all the nodes in a matched cluster.

Updating an existing ManagedOSImage will trigger a new upgrade cycle, to reconcile the configured image (or image version) to all targeted nodes.

You can target nodes for an upgrade via a clusterTarget by setting it to the cluster name that you want to upgrade. All nodes in a cluster that matches that name will match and be upgraded.

upgrade-cluster-target.yaml
apiVersion: elemental.cattle.io/v1beta1
kind: ManagedOSImage
metadata:
name: my-upgrade
namespace: fleet-default
spec:
# Set to the new Elemental version you would like to upgrade to or track the latest tag
osImage: "registry.suse.com/suse/sle-micro/5.5:latest"
clusterTargets:
- clusterName: my-cluster

Selecting source for upgrade​

Just specify an OCI image on the osImage field

upgrade-cluster-target.yaml
apiVersion: elemental.cattle.io/v1beta1
kind: ManagedOSImage
metadata:
name: my-upgrade
namespace: fleet-default
spec:
# Set to the new Elemental version you would like to upgrade to or track the latest tag
osImage: "registry.suse.com/suse/sle-micro/5.5:latest"
clusterTargets:
- clusterName: my-cluster
Warning

If both osImage and ManagedOSVersion are defined in the same ManagedOSImage be aware that osImage takes precedence.

Managing available versions​

It is possible to create ManagedOSVersions directly, or to subscribe to ManagedOSVersionChannels to automatically sync ManagedOSVersions from them.

For more details and a list of available channels, or to even make your own, please read the documentation.

Upgrade via user interface​

To upgrade via the UI, you have to go in the Elemental Advanced menu, then click on Update Groups.

Choose a name, select clusters to target and choose between the two upgrade ways:

Elemental Upgrade Menu

In this case, a OS Version Channels is used to auto populated OS Versions resources.

The channel bellow is provide by us but you can bring your own channel as well.

See section Managing available versions to understand how the ManagedOSVersion are managed.

Create OS Version Channel

After a short syncing time, you will see your OS Versions appears in the OS Versions menu.

Elemental OS Version menu

Finally, you can select the OS Versions when you create your Upgrade Group according to the following screenshot:

Select OS Version in Upgrade Group

Click on the Create button to start the upgrade process, if you have multiple nodes, the upgrade will be done sequentially node by node.