138 lines
2.9 KiB
Markdown
138 lines
2.9 KiB
Markdown
---
|
||
title: 给容器分配非透明整型资源
|
||
---
|
||
|
||
{% capture overview %}
|
||
|
||
本页展示了如何给容器分配非透明整型资源。
|
||
|
||
{% include feature-state-alpha.md %}
|
||
|
||
{% endcapture %}
|
||
|
||
|
||
{% capture prerequisites %}
|
||
|
||
{% include task-tutorial-prereqs.md %}
|
||
|
||
在做这个练习之前，请在[给节点配置非透明整型资源](/docs/tasks/administer-cluster/opaque-integer-resource-node/)文档中进行练习，
|
||
该文档介绍了在一个节点上配置dongle资源。
|
||
|
||
{% endcapture %}
|
||
|
||
|
||
{% capture steps %}
|
||
|
||
## 给Pod分配非透明整型资源
|
||
|
||
为了请求一个非透明整型资源，需要在容器配置文件中包含`resources:requests`字段。
|
||
非透明整型资源类型前缀是`pod.alpha.kubernetes.io/opaque-int-resource-`。
|
||
|
||
下面是含有一个容器的Pod的配置文件:
|
||
|
||
{% include code.html language="yaml" file="oir-pod.yaml" ghlink="/cn/docs/tasks/configure-pod-container/oir-pod.yaml" %}
|
||
|
||
在配置文件中，可以看到容器请求了3个dongles资源。
|
||
|
||
创建Pod:
|
||
|
||
```shell
|
||
kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/oir-pod.yaml
|
||
```
|
||
|
||
验证Pod是否正在运行:
|
||
|
||
```shell
|
||
kubectl get pod oir-demo
|
||
```
|
||
|
||
查询Pod的状态:
|
||
|
||
```shell
|
||
kubectl describe pod oir-demo
|
||
```
|
||
|
||
输出显示了dongle请求:
|
||
|
||
```yaml
|
||
Requests:
|
||
pod.alpha.kubernetes.io/opaque-int-resource-dongle: 3
|
||
```
|
||
|
||
## 尝试创建第二个Pod
|
||
|
||
下面是含有一个容器的Pod的配置文件。该容器请求了两个dongles资源。
|
||
|
||
{% include code.html language="yaml" file="oir-pod-2.yaml" ghlink="/docs/tasks/configure-pod-container/oir-pod-2.yaml" %}
|
||
|
||
Kubernetes无法再满足两个dongles的请求，因为第一个Pod已经使用了四个可用dongles中的三个。
|
||
|
||
尝试创建Pod:
|
||
|
||
```shell
|
||
kubectl create -f https://k8s.io/docs/tasks/configure-pod-container/oir-pod-2.yaml
|
||
```
|
||
|
||
查询Pod的状态
|
||
|
||
```shell
|
||
kubectl describe pod oir-demo-2
|
||
```
|
||
|
||
输出显示该Pod无法被调度，因为没有节点有两个可用的dongles资源:
|
||
|
||
|
||
```
|
||
Conditions:
|
||
Type Status
|
||
PodScheduled False
|
||
...
|
||
Events:
|
||
...
|
||
... Warning FailedScheduling pod (oir-demo-2) failed to fit in any node
|
||
fit failure summary on nodes : Insufficient pod.alpha.kubernetes.io/opaque-int-resource-dongle (1)
|
||
```
|
||
|
||
查看Pod的状态:
|
||
|
||
```shell
|
||
kubectl get pod oir-demo-2
|
||
```
|
||
|
||
输出显示Pod已创建，但是没有被调度并运行在节点上。
|
||
它的状态为Pending:
|
||
|
||
```yaml
|
||
NAME READY STATUS RESTARTS AGE
|
||
oir-demo-2 0/1 Pending 0 6m
|
||
```
|
||
|
||
## 删除
|
||
|
||
删除本练习中创建的Pod:
|
||
|
||
```shell
|
||
kubectl delete pod oir-demo
|
||
```
|
||
|
||
{% endcapture %}
|
||
|
||
{% capture whatsnext %}
|
||
|
||
### 对于应用开发者
|
||
|
||
* [分配内存资源](/docs/tasks/configure-pod-container/assign-memory-resource/)
|
||
* [分配CPU资源](/docs/tasks/configure-pod-container/assign-cpu-resource/)
|
||
|
||
### 对于集群管理员
|
||
|
||
* [给节点配置非透明整型资源](/docs/tasks/administer-cluster/opaque-integer-resource-node/)
|
||
|
||
{% endcapture %}
|
||
|
||
|
||
{% include templates/task.md %}
|
||
|
||
|
||
|