- `network_plugin_operations_latency_microseconds` -> `network_plugin_operations_duration_seconds`
      - `kubelet_pod_worker_latency_microseconds` -> `kubelet_pod_worker_duration_seconds`
      - `kubelet_pod_start_latency_microseconds` -> `kubelet_pod_start_duration_seconds`
      - `kubelet_cgroup_manager_latency_microseconds` -> `kubelet_cgroup_manager_duration_seconds`

- `kube-proxy` in iptables mode will now have separate `sync_full_proxy_rules_duration_seconds`\nand
  `sync_partial_proxy_rules_duration_seconds` (in addition to the existing\n`sync_proxy_rules_duration_seconds`),
  giving better information about the duration of each \nsync type, rather than

  ([#84987](https://github.com/kubernetes/kubernetes/pull/84987), [@RainbowMango](https://github.com/RainbowMango))
- Deprecated prometheus request meta-metrics have been removed
 `http_request_duration_microseconds` `http_request_duration_microseconds_sum` `http_request_duration_microseconds_count`
 `http_request_size_bytes`
 `http_request_size_bytes_sum`
 `http_request_size_bytes_count`
 `http_requests_total, http_response_size_bytes`

    *   reflector_items_per_list
    *   reflector_items_per_watch
    *   reflector_last_resource_version
    *   reflector_list_duration_seconds
    *   reflector_lists_total
    *   reflector_short_watches_total
    *   reflector_watch_duration_seconds
    *   reflector_watches_total

* Add CLUSTER_SIGNING_DURATION environment variable to cluster ([#52497](https://github.com/kubernetes/kubernetes/pull/52497), [@jcbsmpsn](https://github.com/jcbsmpsn))
    * configuration scripts to allow configuration of signing duration of
    * certificates issued via the Certificate Signing Request API.

- Remove the deprecated metrics "scheduling_algorithm_preemption_evaluation_seconds" and "binding_duration_seconds", suggest to use "scheduler_framework_extension_point_duration_seconds" instead. ([#96447](https://github.com/kubernetes/kubernetes/pull/96447), [@chendave](https://github.com/chendave)) [SIG Cluster Lifecycle, Instrumentation, Scheduling and Testing]

- `kubelet_pod_worker_latency_microseconds` -> `kubelet_pod_worker_duration_seconds`
- `kubelet_pod_start_latency_microseconds` -> `kubelet_pod_start_duration_seconds`
- `kubelet_cgroup_manager_latency_microseconds` -> `kubelet_cgroup_manager_duration_seconds`
- `kubelet_pod_worker_start_latency_microseconds` -> `kubelet_pod_worker_start_duration_seconds`

- Removed the following deprecated metrics:
  - node_collector_evictions_number replaced by node_collector_evictions_total
  - scheduler_e2e_scheduling_duration_seconds replaced by scheduler_scheduling_attempt_duration_seconds ([#115209](https://github.com/kubernetes/kubernetes/pull/115209), [@dgrisonnet](https://github.com/dgrisonnet))

- A new kubelet metric `image_pull_duration_seconds` was added. The metric tracks the duration (in seconds) it takes for an image to be pulled, including the time spent in the waiting queue of image puller. The metric is broken down by bucketed image size. ([#121719](https://github.com/kubernetes/kubernetes/pull/121719),...

- Deprecated the `apiserver_request_slo_duration_seconds` metric for v1.27 in favor of `apiserver_request_sli_duration_seconds` for naming consistency purposes with other SLI-specific metrics and to avoid any confusion between SLOs and SLIs. ([#112679](https://github.com/kubernetes/kubernetes/pull/112679), [@dgrisonnet](https:/...