[zh] adjust format

Signed-off-by: xin.li <xin.li@daocloud.io>
This commit is contained in:
xin.li
2022-05-15 18:46:26 +08:00
parent bf46c15bdf
commit 50db11d4b8
@@ -5,14 +5,13 @@ title: 高可用拓扑选项
content_type: concept content_type: concept
weight: 50 weight: 50
--- ---
<!-- <!--
---
reviewers: reviewers:
- sig-cluster-lifecycle - sig-cluster-lifecycle
title: Options for Highly Available Topology title: Options for Highly Available Topology
content_type: concept content_type: concept
weight: 50 weight: 50
---
--> -->
<!-- overview --> <!-- overview -->
@@ -25,7 +24,7 @@ This page explains the two options for configuring the topology of your highly a
<!-- <!--
You can set up an HA cluster: You can set up an HA cluster:
--> -->
可以设置 HA 集群: 可以设置 HA 集群:
<!-- <!--
- With stacked control plane nodes, where etcd nodes are colocated with control plane nodes - With stacked control plane nodes, where etcd nodes are colocated with control plane nodes
@@ -37,7 +36,7 @@ You can set up an HA cluster:
<!-- <!--
You should carefully consider the advantages and disadvantages of each topology before setting up an HA cluster. You should carefully consider the advantages and disadvantages of each topology before setting up an HA cluster.
--> -->
在设置 HA 集群之前,应该仔细考虑每种拓扑的优缺点。 在设置 HA 集群之前,应该仔细考虑每种拓扑的优缺点。
<!-- <!--
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) 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)
@@ -45,7 +44,8 @@ for more details.
--> -->
{{< note >}} {{< note >}}
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。 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。
{{< /note >}} {{< /note >}}
@@ -60,7 +60,8 @@ kubeadm 静态引导 etcd 集群。 阅读 etcd [集群指南](https://github.co
<!-- <!--
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. 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.
--> -->
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。 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。
<!-- <!--
Each control plane node runs an instance of the `kube-apiserver`, `kube-scheduler`, and `kube-controller-manager`. Each control plane node runs an instance of the `kube-apiserver`, `kube-scheduler`, and `kube-controller-manager`.
@@ -76,28 +77,32 @@ Each control plane node creates a local etcd member and this etcd member communi
the `kube-apiserver` of this node. The same applies to the local `kube-controller-manager` the `kube-apiserver` of this node. The same applies to the local `kube-controller-manager`
and `kube-scheduler` instances. and `kube-scheduler` instances.
--> -->
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``kube-scheduler` 实例。 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``kube-scheduler` 实例。
<!-- <!--
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. 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.
--> -->
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。 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。
<!-- <!--
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. 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.
--> -->
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。 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。你可以通过添加更多控制平面节点来降低此风险。
<!-- <!--
You should therefore run a minimum of three stacked control plane nodes for an HA cluster. You should therefore run a minimum of three stacked control plane nodes for an HA cluster.
--> -->
因此,应该为 HA 集群运行至少三个堆叠的控制平面节点。 因此,应该为 HA 集群运行至少三个堆叠的控制平面节点。
<!-- <!--
This is the default topology in kubeadm. A local etcd member is created automatically This is the default topology in kubeadm. A local etcd member is created automatically
on control plane nodes when using `kubeadm init` and `kubeadm join --control-plane`. on control plane nodes when using `kubeadm init` and `kubeadm join --control-plane`.
--> -->
这是 kubeadm 中的默认拓扑。当使用 `kubeadm init``kubeadm join --control-plane` 时,在控制平面节点上会自动创建本地 etcd 成员。 这是 kubeadm 中的默认拓扑。当使用 `kubeadm init``kubeadm join --control-plane` 时,
在控制平面节点上会自动创建本地 etcd 成员。
<!-- <!--
![Stacked etcd topology](/images/kubeadm/kubeadm-ha-topology-stacked-etcd.svg) ![Stacked etcd topology](/images/kubeadm/kubeadm-ha-topology-stacked-etcd.svg)
@@ -112,17 +117,21 @@ on control plane nodes when using `kubeadm init` and `kubeadm join --control-pla
<!-- <!--
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. 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.
--> -->
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。 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。
<!-- <!--
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. 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.
--> -->
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``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。 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``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。
<!-- <!--
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. 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.
--> -->
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。 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。
<!-- <!--
However, this topology requires twice the number of hosts as the stacked HA topology. However, this topology requires twice the number of hosts as the stacked HA topology.
@@ -138,11 +147,8 @@ A minimum of three hosts for control plane nodes and three hosts for etcd nodes
--> -->
![外部 etcd 拓扑](/images/kubeadm/kubeadm-ha-topology-external-etcd.svg) ![外部 etcd 拓扑](/images/kubeadm/kubeadm-ha-topology-external-etcd.svg)
## {{% heading "whatsnext" %}} ## {{% heading "whatsnext" %}}
<!-- <!--
- [Set up a highly available cluster with kubeadm](/docs/setup/production-environment/tools/kubeadm/high-availability/) - [Set up a highly available cluster with kubeadm](/docs/setup/production-environment/tools/kubeadm/high-availability/)
--> -->