title: Warning mechanism for use of deprecated APIs
kep-number: 1693
authors:
  - "@liggitt"
owning-sig: sig-api-machinery
participating-sigs:
  - sig-architecture
  - sig-cli
  - sig-instrumentation
status: implemented
creation-date: 2020-04-16
reviewers:
  - "@lavalamp"
  - "@deads2k"
  - "@seans3"
  - "@logicalhan"
approvers:
  - "@lavalamp"
  - "@smarterclayton"
see-also:
  - "/keps/sig-architecture/1635-prevent-permabeta"

# The target maturity stage in the current dev cycle for this KEP.
# stage: alpha|beta|stable
stage: stable

# The most recent milestone for which work toward delivery of this KEP has been
# done. This can be the current (upcoming) milestone, if it is being actively
# worked on.
latest-milestone: "v1.22"

# The milestone at which this feature was, or is targeted to be, at each stage.
milestone:
  beta: "v1.19"
  stable: "v1.22"

# The following PRR answers are required at alpha release
# List the feature gate name and the components for which it must be enabled
feature-gates:
  - name: WarningHeaders
    components:
      - kube-apiserver
disable-supported: true

# The following PRR answers are required at beta release
metrics:
  - apiserver_requested_deprecated_apis
