You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
2.2 KiB
109 lines
2.2 KiB
3 years ago
|
# 为节点添加扩展资源
|
||
|
|
|
||
|
|
## 启用apiserver代理
|
||
|
|
|
||
|
|
启用apiserver代理，以便发送请求
|
||
|
|
|
||
|
|
```bash
|
||
|
|
kubectl proxy
|
||
|
|
```
|
||
|
|
|
||
|
|
## 添加扩展资源
|
||
|
|
|
||
|
|
```bash
|
||
|
|
export NODE=k8snode1
|
||
|
|
curl --header "Content-Type: application/json-patch+json" \
|
||
|
|
--request PATCH \
|
||
|
|
--data '[{"op": "add", "path": "/status/capacity/bing89.com~1demo", "value": "4"}]' \
|
||
|
|
http://localhost:8001/api/v1/nodes/${NODE}/status
|
||
|
|
```
|
||
|
|
|
||
|
|
输出显示该节点的当前资源容量
|
||
|
|
|
||
|
|
```json
|
||
|
|
"capacity": {
|
||
|
|
"bing89.com/demo": "4",
|
||
|
|
"cpu": "2",
|
||
|
|
"ephemeral-storage": "17394Mi",
|
||
|
|
"hugepages-2Mi": "0",
|
||
|
|
"memory": "4045168Ki",
|
||
|
|
"pods": "110"
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
显示节点信息
|
||
|
|
|
||
|
|
```bash
|
||
|
|
kubectl describe node ${NODE}
|
||
|
|
```
|
||
|
|
|
||
|
|
输出
|
||
|
|
|
||
|
|
```bash
|
||
|
|
Capacity:
|
||
|
|
bing89.com/demo: 4
|
||
|
|
cpu: 2
|
||
|
|
ephemeral-storage: 17394Mi
|
||
|
|
hugepages-2Mi: 0
|
||
|
|
memory: 4045168Ki
|
||
|
|
pods: 110
|
||
|
|
```
|
||
|
|
|
||
|
|
## 测试
|
||
|
|
|
||
|
|
创建一个申请demo资源的[pod](../apiresources/yaml/pod/demo-extend-resouce.yaml)
|
||
|
|
|
||
|
|
```yaml
|
||
|
|
apiVersion: v1
|
||
|
|
kind: Pod
|
||
|
|
metadata:
|
||
|
|
name: demo-extend-resource
|
||
|
|
spec:
|
||
|
|
containers:
|
||
|
|
- name: demo-extend-resource
|
||
|
|
image: registry.bing89.com/tools/demo:1.0
|
||
|
|
ports:
|
||
|
|
- containerPort: 8080
|
||
|
|
name: http-port
|
||
|
|
resources:
|
||
|
|
requests:
|
||
|
|
cpu: 50m
|
||
|
|
bing89.com/demo: 1
|
||
|
|
limits:
|
||
|
|
cpu: 100m
|
||
|
|
bing89.com/demo: 1
|
||
|
|
restartPolicy: OnFailure
|
||
|
|
```
|
||
|
|
|
||
|
|
```bash
|
||
|
|
kubectl -n mem-demo apply -f kubernetes/apiresources/yaml/pod/demo-extend-resouce.yaml
|
||
|
|
```
|
||
|
|
|
||
|
|
查看pod
|
||
|
|
|
||
|
|
```bash
|
||
|
|
kubectl -n mem-demo get pod -o wide
|
||
|
|
```
|
||
|
|
|
||
|
|
现在，pod已经被分配到有资源的`${NODE}(k8snode1)`
|
||
|
|
|
||
|
|
```bash
|
||
|
|
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
|
||
|
|
demo 1/1 Running 0 2d1h 172.16.98.195 k8snode3 <none> <none>
|
||
|
|
demo-extend-resource 1/1 Running 0 25s 172.16.249.5 k8snode1 <none> <none>
|
||
|
|
```
|
||
|
|
|
||
|
|
## 清理扩展资源
|
||
|
|
|
||
|
|
```bash
|
||
|
|
curl --header "Content-Type: application/json-patch+json" \
|
||
|
|
--request PATCH \
|
||
|
|
--data '[{"op": "remove", "path": "/status/capacity/bing89.com~1demo"}]' \
|
||
|
|
http://localhost:8001/api/v1/nodes/${NODE}/status
|
||
|
|
```
|
||
|
|
|
||
|
|
验证是否已经被移除
|
||
|
|
|
||
|
|
```bash
|
||
|
|
kubectl describe node ${NODE} | grep demo
|
||
|
|
```
|