Part 04: How to force quotas limit to Kubernetes resources (limits/request ratio)

This blog is a continuation of previous blog series https://goglides.io/2020/03/03/limit-range-kubernetes/

Limits/Requests Ratio

If LimitRangeItem.maxLimitRequestRatio is specified in the LimitRangeSpec,

• the named resource must have a request and limit
• both request and limit should be non-zero (>0)
• limit divided by request is less than or equal to the enumerated value

Following manifest (limitrange-limit-request-ratio.yaml) saying limit to be at most twice the amount of memory request,

apiVersion: v1
kind: Namespace
metadata:
  name: limitrange-demo3
---
apiVersion: v1
kind: LimitRange
metadata:
  name: limit-memory-ratio-pod
  namespace: limitrange-demo3
spec:
  limits:
  - maxLimitRequestRatio:
      memory: 2
    type: Pod

apply YAML,

kubectl apply -f limitrange-limit-request-ratio.yaml
Output:
namespace/limitrange-demo3 created
limitrange/limit-memory-ratio-pod created

Describe the limitrange,

kubectl describe -f limitrange-limit-request-ratio.yaml
Output:
Name:         limitrange-demo3…