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#1358 Link to 'Settings for etcd tuning' no longer valid, plus other fixes to links to etcd.io/docs (#1362)
* 1358 Link to 'Settings for etcd tuning' no longer valid updates dead link to new URL * updated etcd version links 2.0-2.4 was tricky, I opted for etcd v3.3 as it's identical to the text on v3.4 except for a single clarifying heading * update link in v2.5 to etcd v3.3 to cover downstream * other 3.4 files in /docs * other 3.4 files in /v2.9 * other 3.4 files in /v2.8 * other 3.4 files in /v2.7 * other 3.4 files in /v2.6 * other 3.4 files in /v2.5 * other 3.4 files in /v2.0-2.4 * rm'ing '.0' from URLs * update v2.6 links to account for differing etcd versions * chinese links
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@@ -44,5 +44,5 @@ title: 生产就绪集群检查清单
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### 网络
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* 最小化网络延迟。Rancher 建议尽量减少 etcd 节点之间的延迟。`heartbeat-interval` 的默认设置是 `500`,`election-timeout` 的默认设置是 `5000`。这些 [etcd 调优设置](https://coreos.com/etcd/docs/latest/tuning.html) 允许 etcd 在大多数网络(网络延迟特别高的情况下除外)中运行。
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* 最小化网络延迟。Rancher 建议尽量减少 etcd 节点之间的延迟。`heartbeat-interval` 的默认设置是 `500`,`election-timeout` 的默认设置是 `5000`。这些 [etcd 调优设置](https://etcd.io/docs/v3.5/tuning/) 允许 etcd 在大多数网络(网络延迟特别高的情况下除外)中运行。
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* 集群节点应位于单个区域内。大多数云厂商在一个区域内提供多个可用区,这可以提高你集群的可用性。任何角色的节点都可以使用多个可用区。如果你使用 [Kubernetes Cloud Provider](set-up-cloud-providers.md) 资源,请查阅文档以了解限制(即区域存储限制)。
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