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Update description about node Lease feature. (#16112)

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Yukun Sun 2019-10-09 06:37:51 +08:00 committed by Kubernetes Prow Robot
parent d6cd338e74
commit 4c56c9e151
1 changed files with 2 additions and 3 deletions
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content/en/docs/concepts/architecture/nodes.md
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@ -174,9 +174,8 @@ ConditionUnknown and 5m after that to start evicting pods.) The node controller
checks the state of each node every `--node-monitor-period` seconds.
In versions of Kubernetes prior to 1.13, NodeStatus is the heartbeat from the
node. Starting from Kubernetes 1.13, node lease feature is introduced as an
alpha feature (feature gate `NodeLease`,
[KEP-0009](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/0009-node-heartbeat.md)).
node. Node lease feature is enabled by default since 1.14 as a beta feature
(feature gate `NodeLease`, [KEP-0009](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/0009-node-heartbeat.md)).
When node lease feature is enabled, each node has an associated `Lease` object in
`kube-node-lease` namespace that is renewed by the node periodically, and both
NodeStatus and node lease are treated as heartbeats from the node. Node leases