CSI Migration enables the replacement of existing in-tree storage plugins such as `kubernetes.io/gce-pd` or `kubernetes.io/aws-ebs` with a corresponding CSI driver.
If CSI Migration is working properly, Kubernetes end users shouldn’t notice a difference.
After migration, Kubernetes users may continue to rely on all the functionality of in-tree storage plugins using the existing interface.

* The kubelet --reconcile-cdir flag is deprecated because it has no function anymore. ([#35523](https://github.com/kubernetes/kubernetes/pull/35523), [@luxas](https://github.com/luxas))
* Notice of deprecation for recycler [#36760](https://github.com/kubernetes/kubernetes/pull/36760)

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pkg log/syslog (darwin-386), method (*Writer) Err(string) error
pkg log/syslog (darwin-386), method (*Writer) Info(string) error
pkg log/syslog (darwin-386), method (*Writer) Notice(string) error
pkg log/syslog (darwin-386), method (*Writer) Warning(string) error
pkg log/syslog (darwin-386), method (*Writer) Write([]uint8) (int, error)
pkg log/syslog (darwin-386), type Priority int

- The scheduling queue didn't notice any extenders' failures, it could miss some cluster events,
  and it could end up Pods rejected by Extenders stuck in unschedulable pod pool in 5min in the worst-case scenario.

pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Err(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Info(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Notice(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Warning(string) error
pkg log/syslog (netbsd-arm64-cgo), method (*Writer) Write([]uint8) (int, error)
pkg log/syslog (netbsd-arm64-cgo), type Priority int

pkg log/syslog (freebsd-arm64), method (*Writer) Err(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Info(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Notice(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Warning(string) error
pkg log/syslog (freebsd-arm64), method (*Writer) Write([]uint8) (int, error)
pkg log/syslog (freebsd-arm64), type Priority int

pkg log/syslog (darwin-arm64), method (*Writer) Err(string) error
pkg log/syslog (darwin-arm64), method (*Writer) Info(string) error
pkg log/syslog (darwin-arm64), method (*Writer) Notice(string) error
pkg log/syslog (darwin-arm64), method (*Writer) Warning(string) error
pkg log/syslog (darwin-arm64), method (*Writer) Write([]uint8) (int, error)
pkg log/syslog (darwin-arm64), type Priority int

* The IP address and port for kube-proxy metrics server is now configurable via flag `--metrics-bind-address` ([#48625](https://github.com/kubernetes/kubernetes/pull/48625), [@mrhohn](https://github.com/mrhohn))
  * Special notice for kube-proxy in 1.7+ (including 1.7.0):
    * Healthz server (/healthz) will be served on 0.0.0.0:10256 by default.
    * Metrics server (/metrics and /proxyMode) will be served on 127.0.0.1:10249 by default.

- The scheduling queue didn't notice any extenders' failures, it could miss some cluster events,
  and it could end up Pods rejected by Extenders stuck in unschedulable pod pool in 5min in the worst-case scenario.