### Kubernetes API Reference Documentation

* Bump GCI to gci-beta-56-9000-80-0 ([#41027](https://github.com/kubernetes/kubernetes/pull/41027), [@dchen1107](https://github.com/dchen1107))
* Fix for detach volume when node is not present/ powered off ([#40118](https://github.com/kubernetes/kubernetes/pull/40118), [@BaluDontu](https://github.com/BaluDontu))

- During device plugin allocation, resources requested by the pod can only be allocated if the device plugin has registered itself to kubelet AND healthy devices are present on the node to be allocated. If these conditions are not sattsfied, the pod would fail with `UnexpectedAdmissionError` error. ([#116376](https://github.com/kubernetes/kubernetes/pull/116376), [@swatisehgal](https://github.com/swatisehgal)) [SIG Node...

default `admin.conf` was bound to `system:masters` Group, which was undesired. Executing `kubeadm init phase kubeconfig all` or just `kubeadm init` will now generate the new `super-admin.conf` file. The cluster admin can then decide to keep the file present on a node host or move it to a safe location. `kubadm certs renew` will renew the certificate in `super-admin.conf` to one year if the file exists; if it does not exist a "MISSING" note will be printed. `kubeadm upgrade apply` for this release will...

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* Add a new feature gate for enabling an alpha annotation which, if present, excludes the annotated node from being added to a service load balancers. ([#54644](https://github.com/kubernetes/kubernetes/pull/54644), [@brendandburns](https://github.com/brendandburns))

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, a misleading error is returned: `the server doesn't have a resource...

- Fix client-go prometheus metrics to correctly present the API path accessed in some environments. ([#74363](https://github.com/kubernetes/kubernetes/pull/74363), [@aanm](https://github.com/aanm)) [SIG API Machinery]

  -  AWS Cloud Provider creates default LoadBalancer security group even if annotation [service.beta.kubernetes.io/aws-load-balancer-security-groups] is present ([#87208](https://github.com/kubernetes/kubernetes/pull/87208), [@bhagwat070919](https://github.com/bhagwat070919)) [SIG Cloud Provider]
- Kubelet metrics have been changed to buckets. 

homogeneous text representation, which can be easily obtained through the toString() method. The general pattern is: [organisation]#[module]#[branch];[revision]![artifact].[ext]([type]) The # before the branch is present only if the branch is not empty. The type and surrounding parenthesis are present only if different from the extension. A textual representation can be parsed into an object (supported for ModuleRevisionId only yet), as long as a strict set of characters is used for each field (which is...