What is Kubernetes Resource Quotas and Limit Ranges?

Question

Accepted Answer

**ResourceQuota** — limits total resource usage per namespace.
**LimitRange** — sets default resource requests/limits per Pod.

```yaml
# ResourceQuota
apiVersion: v1
kind: ResourceQuota
metadata:
  name: compute-quota
  namespace: production
spec:
  hard:
    requests.cpu: "8"
    requests.memory: "16Gi"
    limits.cpu: "16"
    limits.memory: "32Gi"
    pods: "20"
    services: "10"
    persistentvolumeclaims: "5"
    secrets: "20"
    configmaps: "20"
---
# LimitRange
apiVersion: v1
kind: LimitRange
metadata:
  name: default-limits
  namespace: production
spec:
  limits:
  - type: Container
    default:
      cpu: "500m"
      memory: "256Mi"
    defaultRequest:
      cpu: "100m"
      memory: "128Mi"
    max:
      cpu: "2"
      memory: "2Gi"
    min:
      cpu: "50m"
      memory: "64Mi"
  - type: Pod
    max:
      cpu: "4"
      memory: "4Gi"
```

```bash
# Check quotas
kubectl get resourcequota -n production
kubectl describe resourcequota compute-quota -n production
kubectl get limitrange -n production
kubectl describe limitrange default-limits -n production
```

**Purpose:**
- Prevent resource exhaustion.
- Fair allocation across teams.
- Enforce resource requests/limits.

DevOps: What is Kubernetes Resource Quotas and Limit Ranges?