Azure AKS (changelog)

This release is rolling out to all regions

Service Updates

• With the official 2019-11-04 Azure CLI release, AKS will default new cluster creates to VM Scale-Sets and Standard Load Balancers (VMSS/SLB) instead of VM Availability Sets and Basic Load Balancers (VMAS/BLB).
• From 2019-10-14 AKS Portal will default new cluster creates to VM Scale-Sets and Standard Load Balancers (VMSS/SLB) instead of VM Availability Sets and Basic Load Balancers (VMAS/BLB). Users can still explicitly choose VMAS and BLB.
• From 2019-11-04 the CLI extension will have a new parameter --zones to replace --node-zones, which specifies the zones to be used by the cluster nodes.

Release Notes

• New Features
  • Multiple Nodepools backed AKS clusters are now Generally Available (GA)
    • https://docs.microsoft.com/en-us/azure/aks/use-multiple-node-pools
  • Cluster Autoscaler is now Generally Available (GA)
    • https://docs.microsoft.com/en-us/azure/aks/cluster-autoscaler
  • Availability Zones are now Generally Available (GA)
    • https://docs.microsoft.com/en-us/azure/aks/availability-zones
  • AKS API server Authorized IP Ranges is now Generally Available (GA)
    • https://docs.microsoft.com/en-us/azure/aks/api-server-authorized-ip-ranges
  • Kubernetes versions 1.15.5, 1.14.8 and 1.13.12 have been added.
    • These versions have new API call logic that helps users with many AKS clusters in the same subscription to incur is less throttling.
    • These versions have security fixes for CVE-2019-11253
  • The minimum --max-pods value has been altered from 30 per node to 30 per Nodepool. Each node will have a hard minimum of 10 pods the user can specify, but this value can only be used if the total pods across all nodes on the nodepool accrue to 30+.
• New Regions
  • Added support for Germany North, Germany West Central, Switzerland North, Switzerland West, and UAE North.
• Bug Fixes
  • Added additional validation to nodepool operations to check for enough address space. If there is no address space left for a scale/upgrade operation, the operation will not start and give a descriptive error message.
  • Fixed bug with Nodepool operations and az aks update-credentials to reflect on the agentpool state.
  • Fixed bug on Nodepool operations when using incorrect SKUs to have more descriptive error.
  • Added validation to block az aks update-credentials if nodepool is not ready to avoid conflicts.
  • Node count on the Nodepool is ignored when user has autoscaling enabled. (Manual scale with autoscaler enabled is not allowed)
  • Fixed bug where some clusters would still receive an older Moby version (3.0.6). Current version is 3.0.7
• Preview Features
  • Windows docker runtime updated to 19.03.2
• Component updates
  • Moby has been updated to v3.0.7
  • AKS-Engine has been updated to v0.41.5