Changelog

General

• Leader election lock is released on shutdown (#3940).
• Names of longUnregistered nodes are now logged (#4060).
• Cluster resource consumption metrics added (#3983).
• Fix templated nodeinfo names collisions in BinpackingNodeEstimator (#4089).
• Don't start CA in cooldown mode (#4104).
• Skip iteration loop if node creation failed (#4143).
• Publish node group min/max metrics (#4022).
• Also set new (non-beta/non-deprecated) labels in buildGenericLabels (#4053).
• Add a flag to control DaemonSet eviction on non-empty nodes (#4162).
• Allow DaemonSet pods to opt in/out from eviction (#4172).
• Update dependencies to k8s 1.22.0 (#4244).
• Metric for CloudProvider.Refresh() duration (#4108).

GCE

• Additional memory reservation for low memory machines (#4028).
• Optimization: concurrent zonal List()s + opportunistic basename fill (#4058).
• Allow overriding userAgent in Custom GCE client (#4149).
• Use CreateInstances() API when scaling up (#4158).
• Use BaseInstanceName in CreateInstances() (#4225).
• Adding support for PERMISSIONS_ERROR (#4137).
• Changed the format of MIG id (#4047).

AWS

• Don't pile up successive full refreshes during AWS scaledowns (#3797)
• Support arm64 instances (#3848).
• Add support for AWS Osaka region (#4169).
• Fix: CA does not work properly while using AWS EC2 IMDSv2 (#4127).
• Update the AWS examples to have 600Mi of memory (#4207).

Azure

• Don't proactively decrement azure cache for unregistered nodes (#4130).
• Add Standard_HB120rs_v3 (#4166).
• Updated storage API version (#4090).
• Support "/"separators in custom allocatable overrides via vmss tags (#4056).
• Add stable zone labels in azure template generation (#4061).

Hetzner

• Fixed RBAC permissions in example manifest for csistoragecapacities and csidrivers resources (#4020).
• Watch Action instead of polling Server Status (#4151).
• Add the ability to spin up Hetzner servers from custom snapshots (#4153).

Bizflycloud

• Added Bizflycloud provider (#4009).

Magnum

• Enable magnum provider scale to zero (#3995).

Ionoscloud

• Security fix: removed dependency on satori/go.uuid (#4070).

OVHcloud

• Enable OVHcloud provider for US side (#4109).

Digitalocean

• Support reading access token from file (#4147).
• Do not Refresh() on startup (#4144).

Images

• k8s.gcr.io/autoscaling/cluster-autoscaler:v1.22.0
• k8s.gcr.io/autoscaling/cluster-autoscaler-arm64:v1.22.0
• k8s.gcr.io/autoscaling/cluster-autoscaler-amd64:v1.22.0