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Cluster Autoscaler 1.23.0
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@MaciekPytel MaciekPytel released this 29 Dec 13:40
· 25 commits to cluster-autoscaler-release-1.23 since this release
cluster-autoscaler-1.23.0
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Changelog

Deprecation

  • NodeInfoProcessor interface has been deprecated and will be removed in version 1.24. (#4191)
    • The interface is superseded by a new TemplateNodeInfoProvider interface.
    • This deprecation is only relevant for users who build customized images of Cluster Autoscaler. There is no change in behavior when using the official CA image.

General

  • --expander flag now accepts a comma-separated list of expanders to use. Additional expanders will be used as fallback if the first expander selects multiple NodeGroups (#4233).
  • Added --feature-gates flag that allows specifying which Kubernetes feature gates should be enabled for the kube-scheduler code embedded by CA (#4539).
  • Fixed a bug where Kubernetes events were not published reliably for cluster-autoscaler-status configmap. The configmap should now have attached events for every scale-up (including failed scale-up attempts) and scale-down (#4328).
  • Improved CA performance in clusters with large number of pods using projected volumes (#4441).

AWS

Note: The merging of #4468 means that the default configuration of the CA will now require an extra IAM permission - ec2:DescribeInstanceTypes

  • Instance type list generation moved from JSON parsing to DescribeInstanceTypes API (#4468)
  • Scale-down options can now be configured per-ASG (#4238).
  • Reduced the number of API calls made by CA (#4073).
  • Added support for NVIDIA A100 GPU.

Azure

  • Scale-down options can now be configured per-VMSS (#4237).
  • Added support for using CLI credentials instead of service principal (#4295).
  • Added support for NVIDIA A100 GPU (#4495).

Brightbox

  • Added Brightbox provider (#4019).

Cluster API

  • The CAPI_GROUP environment variable will now also affect the annotations keys for minimum and maximum node group size, the machine annotation, machine deletion, and the cluster name label (#4451).

GCE

  • Scale-down options can now be configured per-MIG (#4236).
  • SSD ephemeral-storage can now be specified via instance template, allowing scale-from-0 for pods requesting it (#4318).
  • Reduced the number of GCE API calls made by CA (#4423).

Magnum

  • Use highest available magnum microversion (#4261).

Images

  • k8s.gcr.io/autoscaling/cluster-autoscaler:v1.23.0
  • k8s.gcr.io/autoscaling/cluster-autoscaler-arm64:v1.23.0
  • k8s.gcr.io/autoscaling/cluster-autoscaler-amd64:v1.23.0
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