- Fixed garbage collection of dangling VolumeAttachments for PersistentVolumes migrated to CSI on startup of kube-controller-manager. ([#102176](https://github.com/kubernetes/kubernetes/pull/102176), [@timebertt](https://github.com/timebertt)) [SIG Apps and Storage]

  - ip-mask-agent addon starts to use the label `node.kubernetes.io/masq-agent-ds-ready` instead of `beta.kubernetes.io/masq-agent-ds-ready` as its node selector.
  - kube-proxy addon starts to use the label `node.kubernetes.io/kube-proxy-ds-ready` instead of `beta.kubernetes.io/kube-proxy-ds-ready` as its node selector.

om/kubernetes/kubernetes/pull/59052), [@pospispa](https://github.com/pospispa))

* iSCSI sessions managed by kubernetes will now explicitly set startup.mode to 'manual' to  prevent automatic login after node failure recovery. This is the default open-iscsi mode, so this change will only impact users who have changed their startup.mode to be 'automatic' in /etc/iscsi/iscsid.conf. ([#57475](https://github.com/kubernetes/kubernetes/pull/57475), [@stmcginnis](https://github.com/stmcginnis))...

- `kubelet` now emits a metric for end-to-end pod startup latency, including image pull. ([#121041](https://github.com/kubernetes/kubernetes/pull/121041), [@ruiwen-zhao](https://github.com/ruiwen-zhao))
- `kubelet` now exposes latency metrics of different stages of the node startup. ([#118568](https://github.com/kubernetes/kubernetes/pull/118568), [@qiutongs](https://github.com/qiutongs))

- Fixed a regression in default 1.29 configurations with the `SidecarContainers` feature enabled, where init containers may fail to start due to a temporary container runtime failure. ([#126543](https://github.com/kubernetes/kubernetes/pull/126543),...

## Changelog since v1.14.0

### Other notable changes

* GCE/Windows: disable stackdriver logging agent to prevent node startup failures ([#76099](https://github.com/kubernetes/kubernetes/pull/76099), [@yujuhong](https://github.com/yujuhong))

- Kubelet: Fixed a startup crash in devicemanager. ([#113021](https://github.com/kubernetes/kubernetes/pull/113021), [@rphillips](https://github.com/rphillips))
- Kubelet: fixed log spam from kubelet_getters.go `Path does not exist`. ([#112650](https://github.com/kubernetes/kubernetes/pull/112650), [@rphillips](https://github.com/rphillips))

- Fixed a startup probe race condition that caused main containers to remain stuck in "Initializing" state when sidecar containers with startup probes failed initially but succeeded on restart in pods with restartPolicy=Never. ([#134800](https://github.com/kubernetes/kubernetes/pull/134800), [@yuanwang04](https://github.com/yuanwang04))...

- Fixed vSphere cloud provider not to skip detach volumes from nodes at kube-controller-startup. ([#117243](https://github.com/kubernetes/kubernetes/pull/117243), [@jsafrane](https://github.com/jsafrane)) [SIG Cloud Provider]

- Fixed a bug that the kubelet cannot start on BtrfS. ([#98042](https://github.com/kubernetes/kubernetes/pull/98042), [@gjkim42](https://github.com/gjkim42)) [SIG Node]