158 lines
4.5 KiB
Markdown
158 lines
4.5 KiB
Markdown
---
|
||
title: 将 Pod 分配给节点
|
||
content_type: task
|
||
weight: 150
|
||
---
|
||
<!--
|
||
title: Assign Pods to Nodes
|
||
content_type: task
|
||
weight: 150
|
||
-->
|
||
|
||
<!-- overview -->
|
||
<!--
|
||
This page shows how to assign a Kubernetes Pod to a particular node in a
|
||
Kubernetes cluster.
|
||
-->
|
||
此页面显示如何将 Kubernetes Pod 指派给 Kubernetes 集群中的特定节点。
|
||
|
||
## {{% heading "prerequisites" %}}
|
||
|
||
{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
|
||
|
||
<!-- steps -->
|
||
|
||
<!--
|
||
## Add a label to a node
|
||
|
||
1. List the {{< glossary_tooltip term_id="node" text="nodes" >}} in your cluster, along with their labels:
|
||
-->
|
||
## 给节点添加标签 {#add-a-label-to-a-node}
|
||
|
||
1. 列出你的集群中的{{< glossary_tooltip term_id="node" text="节点" >}}，
|
||
包括这些节点上的标签：
|
||
|
||
```shell
|
||
kubectl get nodes --show-labels
|
||
```
|
||
|
||
<!--
|
||
The output is similar to this:
|
||
-->
|
||
输出类似如下：
|
||
|
||
```shell
|
||
NAME STATUS ROLES AGE VERSION LABELS
|
||
worker0 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker0
|
||
worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1
|
||
worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2
|
||
```
|
||
|
||
<!--
|
||
1. Choose one of your nodes, and add a label to it:
|
||
-->
|
||
2. 从你的节点中选择一个，为它添加标签：
|
||
|
||
```shell
|
||
kubectl label nodes <your-node-name> disktype=ssd
|
||
```
|
||
|
||
<!--
|
||
where `<your-node-name>` is the name of your chosen node.
|
||
-->
|
||
`<your-node-name>` 是你选择的节点的名称。
|
||
|
||
<!--
|
||
1. Verify that your chosen node has a `disktype=ssd` label:
|
||
-->
|
||
3. 验证你选择的节点确实带有 `disktype=ssd` 标签：
|
||
|
||
```shell
|
||
kubectl get nodes --show-labels
|
||
```
|
||
|
||
<!--
|
||
The output is similar to this:
|
||
-->
|
||
输出类似如下：
|
||
|
||
```shell
|
||
NAME STATUS ROLES AGE VERSION LABELS
|
||
worker0 Ready <none> 1d v1.13.0 ...,disktype=ssd,kubernetes.io/hostname=worker0
|
||
worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1
|
||
worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2
|
||
```
|
||
<!--
|
||
In the preceding output, you can see that the `worker0` node has a
|
||
`disktype=ssd` label.
|
||
-->
|
||
在前面的输出中，你可以看到 `worker0` 节点有 `disktype=ssd` 标签。
|
||
|
||
<!--
|
||
## Create a pod that gets scheduled to your chosen node
|
||
|
||
This pod configuration file describes a pod that has a node selector,
|
||
`disktype: ssd`. This means that the pod will get scheduled on a node that has
|
||
a `disktype=ssd` label.
|
||
-->
|
||
## 创建一个将被调度到你选择的节点的 Pod {#create-a-pod-scheduled-to-chosen-node}
|
||
|
||
此 Pod 配置文件描述了一个拥有节点选择器 `disktype: ssd` 的 Pod。这表明该 Pod
|
||
将被调度到有 `disktype=ssd` 标签的节点。
|
||
|
||
{{% code_sample file="pods/pod-nginx.yaml" %}}
|
||
|
||
<!--
|
||
1. Use the configuration file to create a pod that will get scheduled on your
|
||
chosen node:
|
||
-->
|
||
1. 使用该配置文件创建一个 Pod，该 Pod 将被调度到你选择的节点上：
|
||
|
||
```shell
|
||
kubectl create -f https://k8s.io/examples/pods/pod-nginx.yaml
|
||
```
|
||
|
||
<!--
|
||
1. Verify that the pod is running on your chosen node:
|
||
-->
|
||
2. 验证 Pod 确实运行在你选择的节点上：
|
||
|
||
```shell
|
||
kubectl get pods --output=wide
|
||
```
|
||
|
||
<!--
|
||
The output is similar to this:
|
||
-->
|
||
输出类似如下：
|
||
|
||
```shell
|
||
NAME READY STATUS RESTARTS AGE IP NODE
|
||
nginx 1/1 Running 0 13s 10.200.0.4 worker0
|
||
```
|
||
|
||
<!--
|
||
## Create a pod that gets scheduled to specific node
|
||
|
||
You can also schedule a pod to one specific node via setting `nodeName`.
|
||
-->
|
||
## 创建一个会被调度到特定节点上的 Pod {#create-a-pod-scheduled-to-specific-node}
|
||
|
||
你也可以通过设置 `nodeName` 将某个 Pod 调度到特定的节点。
|
||
|
||
{{% code_sample file="pods/pod-nginx-specific-node.yaml" %}}
|
||
|
||
<!--
|
||
Use the configuration file to create a pod that will get scheduled on `foo-node` only.
|
||
-->
|
||
使用此配置文件来创建一个 Pod，该 Pod 将只能被调度到 `foo-node` 节点。
|
||
|
||
## {{% heading "whatsnext" %}}
|
||
|
||
<!--
|
||
* Learn more about [labels and selectors](/docs/concepts/overview/working-with-objects/labels/).
|
||
* Learn more about [nodes](/docs/concepts/architecture/nodes/).
|
||
-->
|
||
* 进一步了解[标签和选择算符](/zh-cn/docs/concepts/overview/working-with-objects/labels/)
|
||
* 进一步了解[节点](/zh-cn/docs/concepts/architecture/nodes/)
|