* The 504 timeout error was returning a JSON error body that indicated it was a 500.  The body contents now correctly report a 500 error. ([#49678](https://github.com/kubernetes/kubernetes/pull/49678), [@smarterclayton](https://github.com/smarterclayton))

- Detach volumes from vSphere nodes not tracked by attach-detach controller (#104910, @gnufied) [SIG Cloud Provider and Storage]
- Fix: consolidate logs for instance not found error (#105364, @nilo19) [SIG Cloud Provider]
- Fix: ignore not a VMSS error for VMAS nodes in EnsureBackendPoolDeleted. (#105404, @ialidzhikov) [SIG Cloud Provider]
- Fix: ignore the case when updating Azure tags (#104687, @nilo19) [SIG Cloud Provider]

systems, a mounter's Unmount implementation is changed to not return an error when the specified target can be detected as not a mount point. On Linux, the behavior of detecting a mount point depends on `umount` command is validated when the mounter is created. Additionally, mount point checks will be skipped in CleanupMountPoint/CleanupMountWithForce if the mounter's Unmount having the changed behavior of not returning error when target is not a mount point. ([#109676](https://github.com/kuberne...

- Make the etcd client (used by the API server) retry certain types of errors. The full list of retriable (codes.Unavailable) errors can be found at https://github.com/etcd-io/etcd/blob/main/api/v3rpc/rpctypes/error.go#L72 ([#105069](https://github.com/kubernetes/kubernetes/pull/105069), [@p0lyn0mial](https://github.com/p0lyn0mial))

- Fix bug in CRD Validation Rules (beta) and ValidatingAdmissionPolicy (alpha) where all admission requests could result in `internal error: runtime error: index out of range [3] with length 3 evaluating rule: <rule name>` under certain circumstances. ([#114864](https://github.com/kubernetes/kubernetes/pull/114864), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery]

    * PR [#278](https://github.com/tiangolo/fastapi/pull/278).

## 0.26.0

* Separate error handling for validation errors.
    * This will allow developers to customize the exception handlers.
    * Document better how to handle exceptions and use error handlers.

* It is now posible to use flexVolumes to bind mount directories and files. ([#50596](https://github.com/kubernetes/kubernetes/pull/50596), [@adelton](https://github.com/adelton))

## Dependencies

### Added
- github.com/go-errors/errors: [v1.0.1](https://github.com/go-errors/errors/tree/v1.0.1)
- github.com/gobuffalo/here: [v0.6.0](https://github.com/gobuffalo/here/tree/v0.6.0)
- github.com/google/shlex: [e7afc7f](https://github.com/google/shlex/tree/e7afc7f)

    Kubernetes-managed containers on the node.
  * It is not compatible with CNI plugins that do not conform to the
    [error handling behavior in the spec](https://github.com/containernetworking/cni/blob/master/SPEC.md#network-configuration-list-error-handling).
    The plugins are being updated to resolve this issue ([#43488](https://github.com/kubernetes/kubernetes/issues/43488)).

### Bug or Regression

- Fix: consolidate logs for instance not found error (#105366, @nilo19) [SIG Cloud Provider]
- Fix: ignore not a VMSS error for VMAS nodes in EnsureBackendPoolDeleted. (#105400, @ialidzhikov) [SIG Cloud Provider]
- Fixes a regression on Kubelet restart and pod statuses. (#105560, @rphillips) [SIG Node and Testing]