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reduce kubelet getting node lease #81174
What type of PR is this?
What this PR does / why we need it:
In a large-scale cluster, kubelet get lease too much and too frequently, which may cause etcd and apiserver performance issue. In an 8k nodes cluster, kubelet get lease 50k/min .
Node's lease only update by kubelet itself, so kubelet do not need to get lease every time when try to update, just use the latest one kubelet updated.
Which issue(s) this PR fixes:
Special notes for your reviewer:
Does this PR introduce a user-facing change?:
Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:
Hi @answer1991. Thanks for your PR.
I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with
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@ricky1993: GitHub didn't allow me to request PR reviews from the following users: ricky1993.
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