ResourceQuota without resource limits

gistfile1.bash

# https://kubernetes.io/docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace/

[fabiand@toolbox Downloads]$ minikube kubectl -- apply -f - <<EOF
apiVersion: v1
kind: ResourceQuota
metadata:
  name: mem-cpu-demo
spec:
  hard:
    requests.cpu: "1"
    requests.memory: 1Gi
EOF
resourcequota/mem-cpu-demo created

[fabiand@toolbox Downloads]$ minikube kubectl -- get resourcequota mem-cpu-demo --output=yaml
apiVersion: v1
kind: ResourceQuota
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: |
      {"apiVersion":"v1","kind":"ResourceQuota","metadata":{"annotations":{},"name":"mem-cpu-demo","namespace":"default"},"spec":{"hard":{"requests.cpu":"1","requests.memory":"1Gi"}}}
  creationTimestamp: "2022-06-27T16:58:38Z"
  name: mem-cpu-demo
  namespace: default
  resourceVersion: "492"
  uid: 0a1e8c41-653a-419c-9d77-d0b04dcbf38b
spec:
  hard:
    requests.cpu: "1"
    requests.memory: 1Gi
status:
  hard:
    requests.cpu: "1"
    requests.memory: 1Gi
  used:
    requests.cpu: "0"
    requests.memory: "0"


[fabiand@toolbox Downloads]$ minikube kubectl -- create -f - <<EOF
apiVersion: v1
kind: Pod
metadata:
  generateName: quota-mem-cpu-demo-
spec:
  containers:
  - name: quota-mem-cpu-demo-ctr
    image: nginx
    resources:
      requests:
        memory: "600Mi"
        cpu: "400m"
EOF
pod/quota-mem-cpu-demo-h8t8t created

# (Above) No complaint about missing limits

# (Below) Just checking if it will now fail …

[fabiand@toolbox Downloads]$ minikube kubectl -- create -f - <<EOF
apiVersion: v1
kind: Pod
metadata:
  generateName: quota-mem-cpu-demo-
spec:
  containers:
  - name: quota-mem-cpu-demo-ctr
    image: nginx
    resources:
      limits:
      requests:
        memory: "600Mi"
        cpu: "400m"
EOF
Error from server (Forbidden): error when creating "STDIN": pods "quota-mem-cpu-demo-66bxq" is forbidden: exceeded quota: mem-cpu-demo, requested: requests.memory=600Mi, used: requests.memory=600Mi, limited: requests.memory=1Gi