Merge pull request #31178 from tengqm/zh-dual-stack
[zh] Translate dual-stack-support pagepull/31754/head
Kubernetes Prow Robot
GitHub
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---
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title: 使用 kubeadm 支持双协议栈
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content_type: task
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weight: 110
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min-kubernetes-server-version: 1.21
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---
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<!--
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title: Dual-stack support with kubeadm
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content_type: task
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weight: 110
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min-kubernetes-server-version: 1.21
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-->
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<!-- overview -->
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{{< feature-state for_k8s_version="v1.23" state="stable" >}}
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<!--
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Your Kubernetes cluster includes [dual-stack](/docs/concepts/services-networking/dual-stack/) networking, which means that cluster networking lets you use either address family. In a cluster, the control plane can assign both an IPv4 address and an IPv6 address to a single {{< glossary_tooltip text="Pod" term_id="pod" >}} or a {{< glossary_tooltip text="Service" term_id="service" >}}.
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-->
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你的集群包含[双协议栈](/zh/docs/concepts/services-networking/dual-stack/)组网支持，
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这意味着集群网络允许你在两种地址族间任选其一。在集群中，控制面可以为同一个
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{{< glossary_tooltip text="Pod" term_id="pod" >}} 或者 {{< glossary_tooltip text="Service" term_id="service" >}}
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同时赋予 IPv4 和 IPv6 地址。
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<!-- body -->
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## {{% heading "prerequisites" %}}
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<!--
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You need to have installed the {{< glossary_tooltip text="kubeadm" term_id="kubeadm" >}} tool, following the steps from [Installing kubeadm](/docs/setup/production-environment/tools/kubeadm/install-kubeadm/).
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-->
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你需要已经遵从[安装 kubeadm](/zh/docs/setup/production-environment/tools/kubeadm/install-kubeadm/)
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中所给的步骤安装了 {{< glossary_tooltip text="kubeadm" term_id="kubeadm" >}} 工具。
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<!--
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For each server that you want to use as a {{< glossary_tooltip text="node" term_id="node" >}}, make sure it allows IPv6 forwarding. On Linux, you can set this by running run `sysctl -w net.ipv6.conf.all.forwarding=1` as the root user on each server.
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-->
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针对你要作为{{< glossary_tooltip text="节点" term_id="node" >}}使用的每台服务器，
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确保其允许 IPv6 转发。在 Linux 节点上，你可以通过以 root 用户在每台服务器上运行
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`sysctl -w net.ipv6.conf.all.forwarding=1` 来完成设置。
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<!--
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You need to have an IPv4 and and IPv6 address range to use. Cluster operators typically
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use private address ranges for IPv4. For IPv6, a cluster operator typically chooses a global
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unicast address block from within `2000::/3`, using a range that is assigned to the operator.
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You don't have to route the cluster's IP address ranges to the public internet.
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The size of the IP address allocations should be suitable for the number of Pods and
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Services that you are planning to run.
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-->
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你需要一个可以使用的 IPv4 和 IPv6 地址范围。集群操作人员通常为 IPv4 使用
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私有地址范围。对于 IPv6，集群操作人员通常会基于分配给该操作人员的地址范围，
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从 `2000::/3` 中选择一个全局的单播地址块。你不需要将集群的 IP 地址范围路由
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到公众互联网。
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{{< note >}}
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<!--
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If you are upgrading an existing cluster with the `kubeadm upgrade` command,
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`kubeadm` does not support making modifications to the pod IP address range
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(“cluster CIDR”) nor to the cluster's Service address range (“Service CIDR”).
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-->
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如果你在使用 `kubeadm upgrade` 命令升级现有的集群，`kubeadm` 不允许更改 Pod
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的 IP 地址范围（“集群 CIDR”），也不允许更改集群的服务地址范围（“Service CIDR”）。
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{{< /note >}}
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<!--
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### Create a dual-stack cluster
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To create a dual-stack cluster with `kubeadm init` you can pass command line arguments
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similar to the following example:
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-->
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### 创建双协议栈集群 {#create-a-dual-stack-cluster}
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要使用 `kubeadm init` 创建一个双协议栈集群，你可以传递与下面的例子类似的命令行参数：
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```shell
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# 这里的地址范围仅作示例使用
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kubeadm init --pod-network-cidr=10.244.0.0/16,2001:db8:42:0::/56 --service-cidr=10.96.0.0/16,2001:db8:42:1::/112
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```
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<!--
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To make things clearer, here is an example kubeadm [configuration file](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) `kubeadm-config.yaml` for the primary dual-stack control plane node.
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-->
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为了更便于理解，参看下面的名为 `kubeadm-config.yaml` 的 kubeadm
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[配置文件](/docs/reference/config-api/kubeadm-config.v1beta3/)，
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该文件用于双协议栈控制面的主控制节点。
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```yaml
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---
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apiVersion: kubeadm.k8s.io/v1beta3
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kind: ClusterConfiguration
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networking:
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podSubnet: 10.244.0.0/16,2001:db8:42:0::/56
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serviceSubnet: 10.96.0.0/16,2001:db8:42:1::/112
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---
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apiVersion: kubeadm.k8s.io/v1beta3
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kind: InitConfiguration
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localAPIEndpoint:
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advertiseAddress: "10.100.0.1"
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bindPort: 6443
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nodeRegistration:
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kubeletExtraArgs:
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node-ip: 10.100.0.2,fd00:1:2:3::2
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```
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<!--
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`advertiseAddress` in InitConfiguration specifies the IP address that the API Server will advertise it is listening on. The value of `advertiseAddress` equals the `--apiserver-advertise-address` flag of `kubeadm init`
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Run kubeadm to initiate the dual-stack control plane node:
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-->
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InitConfiguration 中的 `advertiseAddress` 给出 API 服务器将公告自身要监听的
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IP 地址。`advertiseAddress` 的取值与 `kubeadm init` 的标志
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`--apiserver-advertise-address` 的取值相同。
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运行 kubeadm 来实例化双协议栈控制面节点：
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```shell
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kubeadm init --config=kubeadm-config.yaml
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```
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<!--
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The kube-controller-manager flags `--node-cidr-mask-size-ipv4|--node-cidr-mask-size-ipv6` are set with default values. See [configure IPv4/IPv6 dual stack](/docs/concepts/services-networking/dual-stack#configure-ipv4-ipv6-dual-stack).
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-->
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kube-controller-manager 标志 `--node-cidr-mask-size-ipv4|--node-cidr-mask-size-ipv6`
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是使用默认值来设置的。参见[配置 IPv4/IPv6 双协议栈](/zh/docs/concepts/services-networking/dual-stack#configure-ipv4-ipv6-dual-stack)。
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{{< note >}}
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<!--
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The `--apiserver-advertise-address` flag does not support dual-stack.
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-->
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标志 `--apiserver-advertise-address` 不支持双协议栈。
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{{< /note >}}
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<!--
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### Join a node to dual-stack cluster
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Before joining a node, make sure that the node has IPv6 routable network interface and allows IPv6 forwarding.
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Here is an example kubeadm [configuration file](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) `kubeadm-config.yaml` for joining a worker node to the cluster.
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-->
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### 向双协议栈集群添加节点 {#join-a-node-to-dual-stack-cluster}
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在添加节点之前，请确保该节点具有 IPv6 可路由的网络接口并且启用了 IPv6 转发。
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下面的名为 `kubeadm-config.yaml` 的 kubeadm
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[配置文件](/docs/reference/config-api/kubeadm-config.v1beta3/)
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示例用于向集群中添加工作节点。
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```yaml
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apiVersion: kubeadm.k8s.io/v1beta3
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kind: JoinConfiguration
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discovery:
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bootstrapToken:
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apiServerEndpoint: 10.100.0.1:6443
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token: "clvldh.vjjwg16ucnhp94qr"
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caCertHashes:
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- "sha256:a4863cde706cfc580a439f842cc65d5ef112b7b2be31628513a9881cf0d9fe0e"
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# 请更改上面的认证信息，使之与你的集群中实际使用的令牌和 CA 证书匹配
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nodeRegistration:
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kubeletExtraArgs:
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node-ip: 10.100.0.3,fd00:1:2:3::3
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```
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<!--
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Also, here is an example kubeadm [configuration file](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) `kubeadm-config.yaml` for joining another control plane node to the cluster.
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-->
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下面的名为 `kubeadm-config.yaml` 的 kubeadm
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[配置文件](/docs/reference/config-api/kubeadm-config.v1beta3/)
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示例用于向集群中添加另一个控制面节点。
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```yaml
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apiVersion: kubeadm.k8s.io/v1beta3
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kind: JoinConfiguration
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controlPlane:
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localAPIEndpoint:
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advertiseAddress: "10.100.0.2"
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bindPort: 6443
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discovery:
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bootstrapToken:
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apiServerEndpoint: 10.100.0.1:6443
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token: "clvldh.vjjwg16ucnhp94qr"
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caCertHashes:
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- "sha256:a4863cde706cfc580a439f842cc65d5ef112b7b2be31628513a9881cf0d9fe0e"
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# 请更改上面的认证信息，使之与你的集群中实际使用的令牌和 CA 证书匹配
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nodeRegistration:
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kubeletExtraArgs:
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node-ip: 10.100.0.4,fd00:1:2:3::4
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```
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<!--
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`advertiseAddress` in JoinConfiguration.controlPlane specifies the IP address that the API Server will advertise it is listening on. The value of `advertiseAddress` equals the `--apiserver-advertise-address` flag of `kubeadm join`.
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-->
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JoinConfiguration.controlPlane 中的 `advertiseAddress` 设定 API 服务器将公告自身要监听的
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IP 地址。`advertiseAddress` 的取值与 `kubeadm join` 的标志
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`--apiserver-advertise-address` 的取值相同。
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```shell
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kubeadm join --config=kubeadm-config.yaml
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```
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<!--
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### Create a single-stack cluster
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-->
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### 创建单协议栈集群 {#create-a-single-stack-cluster}
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{{< note >}}
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<!--
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Dual-stack support doesn't mean that you need to use dual-stack addressing.
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You can deploy a single-stack cluster that has the dual-stack networking feature enabled.
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-->
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双协议栈支持并不意味着你需要使用双协议栈来寻址。
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你可以部署一个启用了双协议栈联网特性的单协议栈集群。
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{{< /note >}}
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<!--
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To make things more clear, here is an example kubeadm [configuration file](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) `kubeadm-config.yaml` for the single-stack control plane node.
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-->
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为了更便于理解，参看下面的名为 `kubeadm-config.yaml` 的 kubeadm
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[配置文件](/docs/reference/config-api/kubeadm-config.v1beta3/)示例，
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该文件用于单协议栈控制面节点。
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```yaml
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apiVersion: kubeadm.k8s.io/v1beta3
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kind: ClusterConfiguration
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networking:
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podSubnet: 10.244.0.0/16
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serviceSubnet: 10.96.0.0/16
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```
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## {{% heading "whatsnext" %}}
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<!--
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* [Validate IPv4/IPv6 dual-stack](/docs/tasks/network/validate-dual-stack) networking
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* Read about [Dual-stack](/docs/concepts/services-networking/dual-stack/) cluster networking
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* Learn more about the kubeadm [configuration format](/docs/reference/config-api/kubeadm-config.v1beta3/)
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-->
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* [验证 IPv4/IPv6 双协议栈](/zh/docs/tasks/network/validate-dual-stack)联网
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* 阅读[双协议栈](/zh/docs/concepts/services-networking/dual-stack/)集群网络
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* 进一步了解 kubeadm [配置格式](/docs/reference/config-api/kubeadm-config.v1beta3/)
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