Upgrading
Talos
Because of Longhorn, it's really important to use images from Talos factory that embeds following kernel extensions: - siderolabs/iscsi-tools - siderolabs/util-linux-tools
Controlplane will need to be upgraded first, then worker nodes.
If you have only one controlplane node, don't forget to always use the --preserve flag to keep data related to etcd.
Warning
Longhorh requires you to use -preserve flag to keep data related to persistent volumes. Don't forget to use it for any nodes involved in Longhorn cluster.
Failure to do so will result in data loss.
Example of upgrade command:
talosctl upgrade -n 192.168.200.112 --image factory.talos.dev/installer/613e1592b2da41ae5e265e8789429f22e121aab91cb4deb6bc3c0b6262961245:v1.7.6 --preserve
References: - Talos upgrade - Longhorn docs for Talos - Image factory (preset)
Kubernetes
Upgrading Kubernetes is quite straightforward, just run:
talosctl upgrade-k8s --to 1.31.1 -n 192.168.200.101
This should upgrade all nodes in the cluster.
References: - Kubernetes upgrade