- Specifying PluginConfig for the same plugin more than once fails scheduler startup.
  Specifying extenders and configuring .ignoredResources for the NodeResourcesFit plugin fails ([#88870](https://github.com/kubernetes/kubernetes/pull/88870), [@alculquicondor](https://github.com/alculquicondor)) [SIG Scheduling]

* Due to an issue in ingress-gce controller in 1.10.0, creating multi-cluster ingresses with [kubemci CLI](https://github.com/GoogleCloudPlatform/k8s-multicluster-ingress) fails. This will be fixed in 1.10.1 release. ([GoogleCloudPlatform/k8s-multicluster-ingress#175](https://github.com/GoogleCloudPlatform/k8s-multicluster-ingress/issues/175))

## Deprecations

certain virtualization products. Specifically the Windows version of the kubelet.exe calls `GetPhysicallyInstalledSystemMemory` to get the physical memory installed on Windows machines and reports it as part of node metrics to heapster. This API call fails for VMware and VirtualBox virtualization environments. This issue is not present in bare metal Windows deployments, in Hyper-V, or on some of the popular public cloud providers.

*   If you run `kubectl get po` while the API server in unreachable,...

- The `pod_scheduling_duration_seconds` metrics won't consider the time when a Pod fails PreEnqueue (like being gated). ([#118821](https://github.com/kubernetes/kubernetes/pull/118821), [@helayoty](https://github.com/helayoty)) [SIG Scheduling]

    - [CSI Service Account Token](#csi-service-account-token)
    - [CSI Health Monitoring](#csi-health-monitoring)
  - [Known Issues](#known-issues)
    - [<code>TopologyAwareHints</code> feature falls back to default behavior](#topologyawarehints-feature-falls-back-to-default-behavior)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)

## Before Upgrading

Consider the following changes, limitations, and guidelines before you upgrade:

* The kubelet now fails if swap is enabled on a node. To override the default and run with /proc/swaps on, set `--fail-swap-on=false`. The experimental flag `--experimental-fail-swap-on` is deprecated in this release, and will be removed in a future release.

- The `pod_scheduling_duration_seconds` metrics won't consider the time when a pod fails `PreEnqueue` (like being gated). ([#118049](https://github.com/kubernetes/kubernetes/pull/118049), [@helayoty](https://github.com/helayoty))
- The kube-proxy `sync_proxy_rules_iptables_total` metric has now reverted back

## Known Issues

labels: kind/flake
body:
  - type: textarea
    id: jobs
    attributes:
      label: Which jobs are flaking?
      description: |
        Please only use this template for submitting reports about flaky tests or jobs (pass or fail with no underlying change in code) in Kubernetes CI.
        Links to go.k8s.io/triage and/or links to specific failures in spyglass are appreciated.

- Added CEL runtime cost calculation into CustomerResource validation. CustomerResource validation will fail if runtime cost exceeds the budget. ([#108482](https://github.com/kubernetes/kubernetes/pull/108482), [@cici37](https://github.com/cici37))
- Added a new metric `webhook_fail_open_count` to monitor webhooks that fail to open. ([#107171](https://github.com/kubernetes/kubernetes/pull/107171), [@ltagliamonte-dd](https://github.com/ltagliamonte-dd))