This allows the scheduler to handle cluster events faster with less memory.

  Specific node events include updates to taints, tolerations or allocatable.
  In-tree plugins now ignore node updates that don't modify any of these fields. ([#127220](https://github.com/kubernetes/kubernetes/pull/127220), [@sanposhiho](https://github.com/sanposhiho)) [SIG Node, Scheduling and Storage]

- The fallback behavior of the Downward API's `resourceFieldRef` field was updated to account for pod-level resources: if container-level limits were not set, pod-level limits were now used before falling back to node allocatable resources. ([#132605](https://github.com/kubernetes/kubernetes/pull/132605), [@toVersus](https://github.com/toVersus)) [SIG Node, Scheduling and Testing]

resource-intensive in ‘iptables’ mode.
  * Node stability can be improved by reserving [resources](https://github.com/kubernetes/kubernetes/blob/release-1.2/docs/proposals/node-allocatable.md) for the base operating system using --system-reserved and --kube-reserved Kubelet flags
  * Liveness and readiness probes now support more configuration parameters:
periodSeconds, successThreshold, failureThreshold

  - Remove redundant logging around calculating node utilization
  - Add configurable `--network` and `--rm` flags for docker in `Makefile`
  - Subtract DaemonSet pods' requests from node allocatable in the denominator while computing node utilization
  - Include taints by condition when determining if a node is unready/still starting
  - Fix `update-vendor.sh` to work on OSX and zsh

- The `EmptyDir` memory backed volumes are sized as the minimum of pod allocatable memory on a host and an optional explicit user provided value. ([#101048](https://github.com/kubernetes/kubernetes/pull/101048), [@dims](https://github.com/dims))

- Kubelet: wait for node allocatable ephemeral-storage data. ([#101882](https://github.com/kubernetes/kubernetes/pull/101882), [@jackfrancis](https://github.com/jackfrancis))

- Fix the panic when kubelet registers if a node object already exists with no Status.Capacity or Status.Allocatable ([#96297](https://github.com/kubernetes/kubernetes/pull/96297), [@SataQiu](https://github.com/SataQiu)) [SIG Node]

* Fix issue where on re-registration of device plugin, `allocatable` was not getting updated. This issue makes devices invisible to the Kubelet if device plugin restarts. Only work-around, if this fix is not there, is to restart the kubelet and then start device plugin. ([#63118](https://github.com/kubernetes/k...

* Fix issue where on re-registration of device plugin, `allocatable` was not getting updated. This issue makes devices invisible to the Kubelet if device plugin restarts. Only work-around, if this fix is not there, is to restart the kubelet and then start device plugin. ([#63118](https://github.com/kubernetes/k...