* kubelet `--cert-dir` now defaults to `/var/lib/kubelet/pki`, in order to ensure bootstrapped and rotated certificates persist beyond a reboot. resolves an issue in kubeadm with false-positive `/var/lib/kubelet is not empty` message during pre-flight checks ([#53317](https://github.com/kubernetes/kubernetes/pull/53317), [@liggitt](https://github.com/liggitt))

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* "kubeadm init" now writes a structured and versioned kubelet ComponentConfiguration file to `/var/lib/kubelet/config.yaml` and an environment file with runtime flags that you can source in the systemd kubelet dropin to `/var/lib/kubelet/kubeadm-flags.env`. ([#63887](https://github.com/kubernetes/kubernetes/pull/63887), [@luxas](https://github.com/luxas))

    1. Generate a `/var/lib/kubelet/instance-config.yaml` file to customize the `containerRuntimeEndpoint` field in per-node kubelet configurations.
    2. Remove the `kubeadm.alpha.kubernetes.io/cri-socket` annotation from nodes during upgrade operations.

- kubeadm reset: unmount directories under `/var/lib/kubelet` for Linux only ([#81494](https://github.com/kubernetes/kubernetes/pull/81494), [@Klaven](https://github.com/Klaven))

- Fixed kubelet startup getting stuck with `NewVolumeManagerReconstruction` feature enabled and a CSI volume present in /var/lib/kubelet/pods. ([#117804](https://github.com/kubernetes/kubernetes/pull/117804), [@jsafrane](https://github.com/jsafrane)) [SIG Node and Storage]

* Made multi-scheduler graduated to Beta and then v1. ([#38871](https://github.com/kubernetes/kubernetes/pull/38871), [@k82cn](https://github.com/k82cn))
* Fixed forming resolver search line for pods: exclude duplicates, obey libc limitations, logging and eventing appropriately. ([#29666](https://github.com/kubernetes/kubernetes/pull/29666), [@vefimova](https://github.com/vefimova))

## Changelog since v1.14.3

### Other notable changes

* fix kubelet fail to delete orphaned pod directory when the kubelet's pods directory (default is "/var/lib/kubelet/pods") symbolically links to another disk device's directory ([#79094](https://github.com/kubernetes/kubernetes/pull/79094), [@gaorong](https://github.com/gaorong))

* fix kubelet fail to delete orphaned pod directory when the kubelet's pods directory (default is "/var/lib/kubelet/pods") symbolically links to another disk device's directory ([#79094](https://github.com/kubernetes/kubernetes/pull/79094), [@gaorong](https://github.com/gaorong))

field or the `--cri-socket` CLI flag. Automatically add a missing URL scheme to the user configuration in memory, but warn them that they should also update their configuration on disk manually. During `kubeadm upgrade apply/node` mutate the `/var/lib/kubelet/kubeadm-flags.env` file on disk and the `kubeadm.alpha.kubernetes.io/cri-socket` annotation Node object if needed. These automatic actions are temporary and will be removed in a future release. In the future the kubelet may not support CRI endpoints...