Pod资源限制介绍
1.Pod资源配额有两种：
-
申请配额：
spec.containers[].resources.requests.cpu
spec.containers[].resources.requests.memory -
限制配额：
spec.containers[].resources.limits.cpu
spec.containers[].resources.limits.memory
申请配额是当容器就分配到了这么多资源，限制配额是容器最多能申请这么多资源
memory单位可以写为： M或者Mi,1M=1000kb,1Mi=1024kb
cpu单位可以写为：m或者数字，(1000m=1核CPU)，(500m=0.5CPU)，(250m=0.25CPU)
Pod资源限制示例
下面根据官方示例，创建一个pod，pod中两个容器，分别为mysql和wordpress，限制参数请结合上面部分
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apiVersion: v1 kind: Pod metadata: name: frontend spec: containers: - name: db image: mysql env: - name: MYSQL_ROOT_PASSWORD value: "password" resources: requests: memory: "64Mi" cpu: "250m" limits: memory: "128Mi" cpu: "500m" - name: wp image: wordpress resources: requests: memory: "64M" cpu: "0.25" limits: memory: "128M" cpu: "0.5" kubectl apply -f limit_pod.yaml kubectl get pods -o wide | grep frontend frontend 2/2 Running 2 2m45s 10.244.3.45 k8s-node01 <none> <none> |
kubectl describe pods/frontend
