The Wire · Showcase
CLUSTER-AUTOSCALER PATCHES HIT ALL RELEASE BRANCHES AS DRA AND VOLUMEMOUNT BIND OPTIONS LAND
By RepoJournal · Filed · About Kubernetes
Cluster-autoscaler shipped four patch releases across versions 1.33 through 1.36 fixing ProvisioningRequest condition application and Scaleway node detection, while Kubernetes core merged DRA node operations and volumeMount bind mount options.
The autoscaler team released 1.35.2, 1.36.1, 1.34.5, and 1.33.6 in rapid succession, each addressing the same critical issues: Azure VMSS cache failures that caused panics after delete operations, and a Scaleway detection gap that slowed node recognition [4][5][6][7]. All four versions now apply ProvisioningRequest Provisioned conditions correctly and report Scaleway nodes in error as InstanceCreating for faster detection. In the main Kubernetes repo, KEP-5855 landed to add bind mount options to VolumeMount [1], giving users fine-grained control over volume binding behavior, while a separate patch fixed pod group preemption to preserve cycle state across scheduling phases [2]. Windows support improved with busybox hostname.exe updated to handle the --fqdn flag [3]. Across 5 repos this period, the Kubernetes ecosystem shipped 5 releases, 26 PRs, and 58 commits, with test-infra bumping CAPO e2e job resources after DinD cgroup enforcement broke their 2-CPU limits [8]. The release repo merged dependency updates including gRPC 1.82.1, which includes HTTP/2 frame flood protection [9].
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Action items
- → Upgrade cluster-autoscaler across all branches to latest patch (1.36.1 for current, backport to 1.35, 1.34, 1.33 as needed) kubernetes/autoscaler [plan]
- → Review KEP-5855 volumeMount bind mount options for application to your storage layer if using advanced mount scenarios kubernetes/kubernetes [monitor]
- → If running CAPO e2e jobs, scale up DinD resource limits per test-infra #37521 kubernetes/test-infra [plan]
References
- [1] KEP-5855: Add bind mount options to VolumeMount ↗ kubernetes/kubernetes
- [2] Pass clear pod group cycle state in podgroup preemption ↗ kubernetes/kubernetes
- [3] Update hostname.exe in busybox image to support --fqdn on Windows ↗ kubernetes/kubernetes
- [4] cluster-autoscaler-1.35.2 ↗ kubernetes/autoscaler
- [5] cluster-autoscaler-1.36.1 ↗ kubernetes/autoscaler
- [6] cluster-autoscaler-1.34.5 ↗ kubernetes/autoscaler
- [7] cluster-autoscaler-1.33.6 ↗ kubernetes/autoscaler
- [8] Bump resources for cluster-api-provider-openstack e2e jobs ↗ kubernetes/test-infra
- [9] Bump google.golang.org/grpc from 1.81.1 to 1.82.1 ↗ kubernetes/release