- Kubeadm: Ensured that during "upgrade" , if the "etcd.yaml" static pod did not need upgrade, still consider rotating the etcd certificates and restarting the etcd static pod if the "kube-apiserver.yaml" manifest was to be upgraded and if certificate renewal was not disabled. ([#124688](https://github.com/kubernetes/kubernetes/pull/124688), [@neolit123](https:/...

- After DBus restarts, make `GracefulNodeShutdown` work again ([#100369](https://github.com/kubernetes/kubernetes/pull/100369), [@wzshiming](https://github.com/wzshiming))
- Aggregate errors when putting vmss. ([#98350](https://github.com/kubernetes/kubernetes/pull/98350), [@nilo19](https://github.com/nilo19))

- Setting a mirror pod's phase to Succeeded or Failed can prevent the corresponding static pod from restarting due mutation of a Kubelet cache. ([#116482](https://github.com/kubernetes/kubernetes/pull/116482), [@smarterclayton](https://github.com/smarterclayton)) [SIG Node]

ent/tools/kubeadm/high-availability/). An entire new test suite has been created specifically for ensuring these features will stay stable over time.

Certificate management has become more robust in 1.15, with kubeadm now seamlessly rotating all your certificates (on upgrades) before they expire. Check the [kubeadm documentation](https://github.com/kubernetes/website/blob/dev-1.15/content/en/docs/reference/setup-tools/kubeadm/kubeadm-alpha.md) for information on how to manage your certificates....

- Setting a mirror pod's phase to Succeeded or Failed can prevent the corresponding static pod from restarting due mutation of a Kubelet cache. ([#116482](https://github.com/kubernetes/kubernetes/pull/116482), [@smarterclayton](https://github.com/smarterclayton)) [SIG Node]

### Other (Cleanup or Flake)

- Setting a mirror pod's phase to Succeeded or Failed can prevent the corresponding static pod from restarting due mutation of a Kubelet cache. ([#116482](https://github.com/kubernetes/kubernetes/pull/116482), [@smarterclayton](https://github.com/smarterclayton)) [SIG Node]

### Bug or Regression

- Aggregate errors when putting vmss ([#98350](https://github.com/kubernetes/kubernetes/pull/98350), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]

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