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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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@ -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. 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 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 node. Node lease feature is enabled by default since 1.14 as a beta feature
alpha feature (feature gate `NodeLease`, (feature gate `NodeLease`, [KEP-0009](https://github.com/kubernetes/enhancements/blob/master/keps/sig-node/0009-node-heartbeat.md)).
[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 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 `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 NodeStatus and node lease are treated as heartbeats from the node. Node leases