k8s: 资源需求设定

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
  - name: write
    image: centos
    command: ["bash","-c","for i in {1..100};do echo $i >> /data/hello;sleep 1;done"]
    volumeMounts:
      - name: data
        mountPath: /data
  - name: read
    resources:
      requests:
        memory: "64000Mi"
    image: centos
    command: ["bash","-c","tail -f /data/hello"]
    volumeMounts:
      - name: data
        mountPath: /data


  volumes:
  - name: data
    emptyDir: {}

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这个描述文件指定了内存要64000Mi(64G)，服务器内存不足64时直接pending

可以将资源需求改小为640M

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
  - name: write
    image: centos
    command: ["bash","-c","for i in {1..100};do echo $i >> /data/hello;sleep 1;done"]
    volumeMounts:
      - name: data
        mountPath: /data
  - name: read
    resources:
      requests:
        memory: "640Mi"
    image: centos
    command: ["bash","-c","tail -f /data/hello"]
    volumeMounts:
      - name: data
        mountPath: /data


  volumes:
  - name: data
    emptyDir: {}

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再创建就会成功