- Kube-controller-manager: The daemonset controller now defers syncing a DaemonSet object when the controller has not yet observed daemonset or pod writes from the last time the object was synced. This prevents spurious creation of duplicate pods for nodes when the controller's cache is stale. When a sync is deferred for this reason, a...

- Revised the logic for DaemonSet rolling update to exclude nodes if scheduling constraints are not met.
  This eliminates the problem of rolling updates to a DaemonSet getting stuck around tolerations. ([#120786](https://github.com/kubernetes/kubernetes/pull/120786), [@mochizuki875](https://github.com/mochizuki875)) [SIG Apps and Testing]

### API Change

- 'ACTION REQUIRED: The Dynamic Resource Allocation (DRA) driver's DaemonSet
  must be deployed with a service account that enables writing ResourceSlice
  and reading ResourceClaim objects.'

- Revised the logic for DaemonSet rolling update to exclude nodes if scheduling constraints are not met.
  This eliminates the problem of rolling updates to a DaemonSet getting stuck around tolerations. ([#120785](https://github.com/kubernetes/kubernetes/pull/120785), [@mochizuki875](https://github.com/mochizuki875)) [SIG Apps and Testing]

- Revised the logic for `DaemonSet` rolling update to exclude nodes if scheduling constraints are not met. This eliminates the problem of rolling updates to a `DaemonSet` getting stuck around tolerations. ([#119317](https://github.com/kubernetes/kubernetes/pull/119317), [@mochizuki875](https://github.com/mochizuki875))

### Apps

- Fix a bug that pods not be deleted from unmatched nodes by daemon controller ([#78974](https://github.com/kubernetes/kubernetes/pull/78974), [@DaiHao](https://github.com/DaiHao))
- Fix a bug that causes DaemonSet rolling update hang when there exist failed pods. ([#78170](https://github.com/kubernetes/kubernetes/pull/78170), [@DaiHao](https://github.com/DaiHao))

### Auth

- Revised the logic for DaemonSet rolling update to exclude nodes if scheduling constraints are not met.
  This eliminates the problem of rolling updates to a DaemonSet getting stuck around tolerations. ([#120792](https://github.com/kubernetes/kubernetes/pull/120792), [@mochizuki875](https://github.com/mochizuki875)) [SIG Apps and Testing]

- Added `--concurrent-daemonset-syncs` command line flag to kube-controller-manager. This value sets the number of workers for the daemonset controller. ([#128444](https://github.com/kubernetes/kubernetes/pull/128444), [@tosi3k](https://github.com/tosi3k))

- Revised the logic for DaemonSet rolling update to exclude nodes if scheduling constraints are not met.
  This eliminates the problem of rolling updates to a DaemonSet getting stuck around tolerations. ([#120789](https://github.com/kubernetes/kubernetes/pull/120789), [@mochizuki875](https://github.com/mochizuki875)) [SIG Apps and Testing]