Azure Kubernetes Service upgrade improvements are now in preview
Published date: June 10, 2020
Upgrading is a common operation required for all Kubernetes workloads. Two new Azure Kubernetes Service (AKS) upgrade capabilities that will improve the granularity and efficiency of regular Kubernetes upgrade operations are now in preview.
- Node image upgrade enables you to update node-level components such as the container runtime or OS updates without going through a full Kubernetes upgrade. Use this capability to initiate a targeted upgrade to agent nodes for a given node pool to pull the latest available node updates and patches without requiring a full cluster upgrade.
- Max surge enables faster upgrades by taking advantage of multiple new buffer nodes to concurrently replace older nodes. Instead of replacing a single node at a time, you can now customize your own max surge value per node pool to define how many concurrent replacements occur.