This issue works as an umbrella holding up all related items of implementing KEP "Metrics Stability Migration".

Work Items:

• Wrap buckets functionality and migrate metrics to stability framework
  • Wrap buckets functionality. Add wrapper for prometheus buckets functionality  kubernetes#82583
  • Migrate apiserver. Migrate prometheus bucket functionality to metrics stability framework for apiserver kubernetes#82630
  • Migrate volume. Migrate prometheus bucket functionality to kube-metrics for volume kubernetes#82626
  • Migrate proxy metrics. Migrate prometheus bucket functionality to kube-metrics for proxy metrics kubernetes#82736
  • Migrate proxy winkernel. Migrate prometheus bucket functionality to kube-metrics for winkernel kubernetes#82737
  • Migrate scheduler. Migrate prometheus bucket functionality to metrics stability framework for scheduler kubernetes#82741
  • Migrate stability framework itself. Migrate prometheus bucket functionality for metrics stability framework kubernetes#82745
  • Migrate kubelet. Eliminate direct references to prometheus from kubelet kubernetes#83499
• Wrap labels functionality
  • Wrap labels definition
• Introduce testutil and refactor test cases
  • Introduce testutil. Introduce testutil package to support metrics testing kubernetes#83299
  • scheduler. Refactor scheduler metric test with testutils kubernetes#83611
  • kubelet. Refactor kubelet ut with metrics testutil kubernetes#83664
• Wrap GaugeFunc functionality(hold, rely on Provide a mechanism for custom collectors to use the metrics stability framework kubernetes#83062)
• Remove reference to Prometheus
  • kube-scheduler. Remove direct reference to label kubernetes#83220
  • cloud provider openstack. Remove direct reference to prometheus from openstack kubernetes#83269
  • cloud provider vsphere. Remove direct reference to prometheus.Label kubernetes#83223
  • cloud provider aws. Remove direct reference to prometheus from aws kubernetes#83278
  • kubelet. Remove direct reference to prometheus from kubelet kubernetes#83279
  • intergration test
    • Remove references to prometheus is test/e2e kubernetes#85029 @serathius
    • Remove prometheus references in test/integration kubernetes#84283 @serathius
    • Refactor test/integration/master/ with metric kubernetes#83833 @tanjunchen
• Remove reference to promhttp
  • etcd-version-monitor remove reference to promhttp in etcd-version-monitor kubernetes#84221 @wuyafang
  • kubelet remove reference to promhttp in kubelet kubernetes#84393 @wuyafang
• Reference to github.com/prometheus/client_model/go

/sig instrumentation
/assign