@@ -5,14 +5,13 @@ title: 高可用拓扑选项
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content_type: concept
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weight: 50
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---
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<!--
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---
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reviewers:
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- sig-cluster-lifecycle
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title: Options for Highly Available Topology
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content_type: concept
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weight: 50
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---
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-->
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<!-- overview -->
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@@ -25,7 +24,7 @@ This page explains the two options for configuring the topology of your highly a
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<!--
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You can set up an HA cluster:
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-->
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您可以设置 HA 集群:
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你可以设置 HA 集群:
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<!--
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- With stacked control plane nodes, where etcd nodes are colocated with control plane nodes
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@@ -37,7 +36,7 @@ You can set up an HA cluster:
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<!--
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You should carefully consider the advantages and disadvantages of each topology before setting up an HA cluster.
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-->
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在设置 HA 集群之前,您应该仔细考虑每种拓扑的优缺点。
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在设置 HA 集群之前,你应该仔细考虑每种拓扑的优缺点。
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<!--
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kubeadm bootstraps the etcd cluster statically. Read the etcd [Clustering Guide](https://github.com/etcd-io/etcd/blob/release-3.4/Documentation/op-guide/clustering.md#static)
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@@ -45,7 +44,8 @@ for more details.
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-->
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{{< note >}}
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kubeadm 静态引导 etcd 集群。 阅读 etcd [集群指南](https://github.com/etcd-io/etcd/blob/release-3.4/Documentation/op-guide/clustering.md#static)以获得更多详细信息。
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kubeadm 静态引导 etcd 集群。
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阅读 etcd [集群指南](https://github.com/etcd-io/etcd/blob/release-3.4/Documentation/op-guide/clustering.md#static)以获得更多详细信息。
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{{< /note >}}
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@@ -60,7 +60,8 @@ kubeadm 静态引导 etcd 集群。 阅读 etcd [集群指南](https://github.co
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<!--
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A stacked HA cluster is a [topology](https://en.wikipedia.org/wiki/Network_topology) where the distributeddata storage cluster provided by etcd is stacked on top of the cluster formed by the nodes managed by kubeadm that run control plane components.
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-->
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堆叠(Stacked) HA 集群是一种这样的[拓扑](https://en.wikipedia.org/wiki/Network_topology),其中 etcd 分布式数据存储集群堆叠在 kubeadm 管理的控制平面节点上,作为控制平面的一个组件运行。
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堆叠(Stacked) HA 集群是一种这样的[拓扑](https://en.wikipedia.org/wiki/Network_topology),
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其中 etcd 分布式数据存储集群堆叠在 kubeadm 管理的控制平面节点上,作为控制平面的一个组件运行。
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<!--
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Each control plane node runs an instance of the `kube-apiserver`, `kube-scheduler`, and `kube-controller-manager`.
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@@ -76,28 +77,32 @@ Each control plane node creates a local etcd member and this etcd member communi
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the `kube-apiserver` of this node. The same applies to the local `kube-controller-manager`
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and `kube-scheduler` instances.
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-->
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每个控制平面节点创建一个本地 etcd 成员(member),这个 etcd 成员只与该节点的 `kube-apiserver` 通信。这同样适用于本地 `kube-controller-manager` 和 `kube-scheduler` 实例。
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每个控制平面节点创建一个本地 etcd 成员(member),这个 etcd 成员只与该节点的 `kube-apiserver` 通信。
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这同样适用于本地 `kube-controller-manager` 和 `kube-scheduler` 实例。
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<!--
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This topology couples the control planes and etcd members on the same nodes. It is simpler to set up than a cluster with external etcd nodes, and simpler to manage for replication.
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-->
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这种拓扑将控制平面和 etcd 成员耦合在同一节点上。相对使用外部 etcd 集群,设置起来更简单,而且更易于副本管理。
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这种拓扑将控制平面和 etcd 成员耦合在同一节点上。相对使用外部 etcd 集群 ,
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设置起来更简单,而且更易于副本管理。
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<!--
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However, a stacked cluster runs the risk of failed coupling. If one node goes down, both an etcd member and a controlplane instance are lost, and redundancy is compromised. You can mitigate this risk by adding more control plane nodes.
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-->
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然而,堆叠集群存在耦合失败的风险。如果一个节点发生故障,则 etcd 成员和控制平面实例都将丢失,并且冗余会受到影响。您可以通过添加更多控制平面节点来降低此风险。
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然而,堆叠集群存在耦合失败的风险。如果一个节点发生故障,则 etcd 成员和控制平面实例都将丢失,
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并且冗余会受到影响。你可以通过添加更多控制平面节点来降低此风险。
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<!--
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You should therefore run a minimum of three stacked control plane nodes for an HA cluster.
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-->
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因此,您应该为 HA 集群运行至少三个堆叠的控制平面节点。
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因此,你应该为 HA 集群运行至少三个堆叠的控制平面节点。
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<!--
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This is the default topology in kubeadm. A local etcd member is created automatically
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on control plane nodes when using `kubeadm init` and `kubeadm join --control-plane`.
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-->
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这是 kubeadm 中的默认拓扑。当使用 `kubeadm init` 和 `kubeadm join --control-plane` 时,在控制平面节点上会自动创建本地 etcd 成员。
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这是 kubeadm 中的默认拓扑。当使用 `kubeadm init` 和 `kubeadm join --control-plane` 时,
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在控制平面节点上会自动创建本地 etcd 成员。
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<!--
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@@ -112,17 +117,21 @@ on control plane nodes when using `kubeadm init` and `kubeadm join --control-pla
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<!--
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An HA cluster with external etcd is a [topology](https://en.wikipedia.org/wiki/Network_topology) where the distributed data storage cluster provided by etcd is external to the cluster formed by the nodes that run control plane components.
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-->
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具有外部 etcd 的 HA 集群是一种这样的[拓扑](https://en.wikipedia.org/wiki/Network_topology),其中 etcd 分布式数据存储集群在独立于控制平面节点的其他节点上运行。
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具有外部 etcd 的 HA 集群是一种这样的[拓扑](https://en.wikipedia.org/wiki/Network_topology),
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其中 etcd 分布式数据存储集群在独立于控制平面节点的其他节点上运行。
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<!--
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Like the stacked etcd topology, each control plane node in an external etcd topology runs an instance of the `kube-apiserver`, `kube-scheduler`, and `kube-controller-manager`. And the `kube-apiserver` is exposed to worker nodes using a load balancer. However, etcd members run on separate hosts, and each etcd host communicates with the `kube-apiserver` of each control plane node.
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-->
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就像堆叠的 etcd 拓扑一样,外部 etcd 拓扑中的每个控制平面节点都运行 `kube-apiserver`,`kube-scheduler` 和 `kube-controller-manager` 实例。同样, `kube-apiserver` 使用负载均衡器暴露给工作节点。但是,etcd 成员在不同的主机上运行,每个 etcd 主机与每个控制平面节点的 `kube-apiserver` 通信。
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就像堆叠的 etcd 拓扑一样,外部 etcd 拓扑中的每个控制平面节点都运行 `kube-apiserver`,`kube-scheduler` 和 `kube-controller-manager` 实例。
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同样,`kube-apiserver` 使用负载均衡器暴露给工作节点。但是,etcd 成员在不同的主机上运行,
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每个 etcd 主机与每个控制平面节点的 `kube-apiserver` 通信。
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<!--
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This topology decouples the control plane and etcd member. It therefore provides an HA setup wherelosing a control plane instance or an etcd member has less impact and does not affectthe cluster redundancy as much as the stacked HA topology.
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-->
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这种拓扑结构解耦了控制平面和 etcd 成员。因此,它提供了一种 HA 设置,其中失去控制平面实例或者 etcd 成员的影响较小,并且不会像堆叠的 HA 拓扑那样影响集群冗余。
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这种拓扑结构解耦了控制平面和 etcd 成员。因此,它提供了一种 HA 设置,
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其中失去控制平面实例或者 etcd 成员的影响较小,并且不会像堆叠的 HA 拓扑那样影响集群冗余。
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|
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<!--
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However, this topology requires twice the number of hosts as the stacked HA topology.
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@@ -138,14 +147,11 @@ A minimum of three hosts for control plane nodes and three hosts for etcd nodes
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-->
|
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|
||||
|
||||
## {{% heading "whatsnext" %}}
|
||||
|
||||
|
||||
<!--
|
||||
- [Set up a highly available cluster with kubeadm](/docs/setup/production-environment/tools/kubeadm/high-availability/)
|
||||
-->
|
||||
- [使用 kubeadm 设置高可用集群](/zh/docs/setup/production-environment/tools/kubeadm/high-availability/)
|
||||
- [使用 kubeadm 设置高可用集群](/zh/docs/setup/production-environment/tools/kubeadm/high-availability/)
|
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|
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|
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Block a user