generated from bing/readnotes
109 lines
2.2 KiB
Markdown
109 lines
2.2 KiB
Markdown
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# 为节点添加扩展资源
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## 启用apiserver代理
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启用apiserver代理，以便发送请求
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```bash
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kubectl proxy
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```
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## 添加扩展资源
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```bash
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export NODE=k8snode1
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curl --header "Content-Type: application/json-patch+json" \
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--request PATCH \
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--data '[{"op": "add", "path": "/status/capacity/bing89.com~1demo", "value": "4"}]' \
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http://localhost:8001/api/v1/nodes/${NODE}/status
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```
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输出显示该节点的当前资源容量
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```json
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"capacity": {
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"bing89.com/demo": "4",
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"cpu": "2",
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"ephemeral-storage": "17394Mi",
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"hugepages-2Mi": "0",
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"memory": "4045168Ki",
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"pods": "110"
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}
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```
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显示节点信息
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```bash
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kubectl describe node ${NODE}
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```
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输出
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```bash
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Capacity:
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bing89.com/demo: 4
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cpu: 2
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ephemeral-storage: 17394Mi
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hugepages-2Mi: 0
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memory: 4045168Ki
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pods: 110
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```
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## 测试
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创建一个申请demo资源的[pod](../apiresources/yaml/pod/demo-extend-resouce.yaml)
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```yaml
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apiVersion: v1
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kind: Pod
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metadata:
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name: demo-extend-resource
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spec:
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containers:
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- name: demo-extend-resource
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image: registry.bing89.com/tools/demo:1.0
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ports:
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- containerPort: 8080
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name: http-port
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resources:
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requests:
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cpu: 50m
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bing89.com/demo: 1
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limits:
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cpu: 100m
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bing89.com/demo: 1
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restartPolicy: OnFailure
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```
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```bash
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kubectl -n mem-demo apply -f kubernetes/apiresources/yaml/pod/demo-extend-resouce.yaml
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```
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查看pod
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```bash
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kubectl -n mem-demo get pod -o wide
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```
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现在，pod已经被分配到有资源的`${NODE}(k8snode1)`
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```bash
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NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
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demo 1/1 Running 0 2d1h 172.16.98.195 k8snode3 <none> <none>
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demo-extend-resource 1/1 Running 0 25s 172.16.249.5 k8snode1 <none> <none>
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```
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## 清理扩展资源
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```bash
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curl --header "Content-Type: application/json-patch+json" \
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--request PATCH \
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--data '[{"op": "remove", "path": "/status/capacity/bing89.com~1demo"}]' \
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http://localhost:8001/api/v1/nodes/${NODE}/status
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```
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验证是否已经被移除
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```bash
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kubectl describe node ${NODE} | grep demo
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```
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