Customers
upgrading AKS clusters often need a clear and flexible path to adopt new OS
versions without disrupting workloads. Ubuntu 24.04 is now generally
available on AKS starting with Kubernetes version 1.32, with containerd 2.0 enabled by default.
It can be
enabled using the new Ubuntu2404 OS SKU in Kubernetes 1.32 and above, or by using the
standard Ubuntu OS SKU in Kubernetes 1.35 and above, where Ubuntu 24.04 becomes the default.
Existing
clusters already using the Ubuntu OS SKU will automatically migrate to Ubuntu 24.04 when upgraded to
Kubernetes 1.35 or later.
For
rollback or testing scenarios, AKS also now supports the Ubuntu2204 OS SKU
across Kubernetes versions 1.25 through 1.36, allowing practitioners to switch OS versions without
requiring a Kubernetes version change. These options provide more control over
OS lifecycle management and simplify migration planning for cluster operators.
Learn more.