- Kubeadm: make sure the etcd static pod startup probe uses /health?serializable=false while the liveness probe uses /health?serializable=true&exclude=NOSPACE. The NOSPACE exclusion would allow administrators to address space issues one member at a time. ([#110744](https://github.com/kubernetes/kubernetes/pull/110744), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

- Replace the url label of `rest_client_request_duration_seconds` and `rest_client_rate_limiter_duration_seconds` metrics with a host label to prevent cardinality explosions and keep only the useful information. This is a breaking change required for security reasons. ([#106539](https://github.com/kubernetes/kubernetes/pull/106539), [@dgrisonnet](https://github.com/dgrisonnet))