In this blog, we will look at the process used by Microsoft Azure to add support for new Kubernetes versions for their "Managed" Azure Kubernetes Service (AKS). We will also look at recommendations for customers on things they need to consider to operate their AKS clusters at scale without issues.
Azure's AKS managed Kubernetes is supported globally in 60+ regions. As one can imagine, it is not practical to update software in all these regions in one fell swoop. The AKS team at Microsoft employs a Safe Deployment Practice (SDP) where new releases are rolled out gradually in phases. This means that any given time, something new is being rolled out to some region.
The AKS team maintains a Release Tracker that provides visibility to customers that require it.