AKS Blue Green Nodepool Upgrade

kaarthis commented 1 month ago

AKS is working towards the release of a new way to upgrade your AKS cluster’s nodepools using a blue-green deployment strategy called “Blue-Green Nodepool Upgrades Strategy”. AKS customers can now upgrade their nodepool kubernetes versions and node OS in a blue green fashion without having to manually orchestrate the new (Green) nodepool creation, workload migration and the draining/deleting of the old(Blue) nodepool. When using this strategy, AKS will automatically create a Green nodepool (under the hood) in the cluster (one for every existing nodepool at the time of upgrade), cordon and drain the Blue nodepool, surface upgrade events and notices. Customers can also control the initial step size of the green nodepool, and define a soak time during which Blue nodepool is persisted so that customers can run smoke tests on their applications (on their own) and rollback to preview version immediately if needed.

kaarthis commented 1 month ago

IN progress preview Early Q1 2025.