无法创建请求超过2Gi内存的部署

  Type     Reason   Age   From                                             Message
  ----     ------   ----  ----                                             -------
  Warning  Evicted  1h    kubelet, gke-XXX-default-pool-XXX  The node was low on resource: memory. Container my-container was using 1700040Ki, which exceeds its request of 0.
  Normal   Killing  1h    kubelet, gke-XXX-default-pool-XXX  Killing container with id docker://my-container:Need to kill Pod

我试图通过在部署中添加以下内容来给它更多内存 yaml :

apiVersion: apps/v1
kind: Deployment
...
spec:
  ...
  template:
    ...
    spec:
      ...
      containers:

      - name: my-container
        image: my-container:latest
        ...
        resources:
          requests:
            memory: "3Gi"

然而,它未能部署:

  Type     Reason             Age               From                Message
  ----     ------             ----              ----                -------
  Warning  FailedScheduling   4s (x5 over 13s)  default-scheduler   0/3 nodes are available: 3 Insufficient memory.
  Normal   NotTriggerScaleUp  0s                cluster-autoscaler  pod didn't trigger scale-up (it wouldn't fit if a new node is added)

部署只请求一个容器。

GKE 通过自动缩放,默认(且仅限于)池中的节点具有3.75 GB内存。

通过反复试验,我发现我可以请求的最大内存是“2Gi”。为什么我不能用一个pod利用一个节点的完整3.75?我需要内存容量更大的节点吗?