mirror of https://github.com/k3s-io/k3s
506950ada0
Automatic merge from submit-queue (batch tested with PRs 41421, 41440, 36765, 41722)
ResourceQuota ability to support default limited resources
Add support for the ability to configure the quota system to identify specific resources that are limited by default. A limited resource means its consumption is denied absent a covering quota. This is in contrast to the current behavior where consumption is unlimited absent a covering quota. Intended use case is to allow operators to restrict consumption of high-cost resources by default.
Example configuration:
**admission-control-config-file.yaml**
```
apiVersion: apiserver.k8s.io/v1alpha1
kind: AdmissionConfiguration
plugins:
- name: "ResourceQuota"
configuration:
apiVersion: resourcequota.admission.k8s.io/v1alpha1
kind: Configuration
limitedResources:
- resource: pods
matchContains:
- pods
- requests.cpu
- resource: persistentvolumeclaims
matchContains:
- .storageclass.storage.k8s.io/requests.storage
```
In the above configuration, if a namespace lacked a quota for any of the following:
* cpu
* any pvc associated with particular storage class
The attempt to consume the resource is denied with a message stating the user has insufficient quota for the matching resources.
```
$ kubectl create -f pvc-gold.yaml
Error from server: error when creating "pvc-gold.yaml": insufficient quota to consume: gold.storageclass.storage.k8s.io/requests.storage
$ kubectl create quota quota --hard=gold.storageclass.storage.k8s.io/requests.storage=10Gi
$ kubectl create -f pvc-gold.yaml
... created
```
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