Feature Description

• One-line feature description (can be used as a release note): Kubelet creates and periodically renews a Lease on the node; node lifecycle controller treats this lease as a health signal
• Primary contact (assignee): @wangzhen127
• Responsible SIGs: sig-node
• Design proposal link (community repo): KEP-589
• Link to e2e and/or unit tests: (coming soon)
• Reviewer(s) - (for LGTM) recommend having 2+ reviewers (at least one from code-area OWNERS file) agreed to review. Reviewers from multiple companies preferred: @yujuhong @dchen1107 @wojtek-t
• Approver (likely from SIG/area to which feature belongs): @yujuhong
• Feature target (which target equals to which milestone):
  • Alpha release target (1.13)
    • coordination API group merged to beta
      • Create "Lease" API in the new "coordination.k8s.io" api group kubernetes#64246
    • Kubelet creates and periodically renews Lease
      • Kubelet creates and manages node leases kubernetes#66257
    • Node controller treats Kubelet leases as a health signal
    • Re-tune Kubelet Node status updates as described in [KEP-0009]
      (https://github.com/kubernetes/community/blob/master/keps/sig-node/0009-node-heartbeat.md)
  • Beta release target (1.14)
    • Released
  • GA release target (1.17)
    • Released