CODEWITHSUNDEEP
kubernetesautoscalinghpa
iron_man83
iron_man83

Reputation: 67

how to read the CPU utilization in k8s LENS

It may sound like a naive question, I am running some load testing on one of the deployments on k8s. So to get an idea of the CPU utilization, I opened LENS HPA and CPU utilization is being shown like this

enter image description here

can anyone please tell me how to understand this number, earlier it was 380/50% for CPU.

I just want to get an idea of what does this number means, if it is 380/50, is my CPU not big enough?

Upvotes: 1

Views: 5387

Answers (1)

Mikolaj S.
Mikolaj S.

Reputation: 3224

It means probably the same as the output from the kubectl describe hpa {hpa-name}:

$ kubectl describe hpa php-apache
Name:                                                  php-apache
...
Metrics:                                               ( current / target )
  resource cpu on pods  (as a percentage of request):  60% (120m) / 50%

It means that CPU has consumption increased to to x % of the request - good example and explanation in the Kubernetes docs:

Within a minute or so, you should see the higher CPU load; for example:

NAME         REFERENCE                     TARGET      MINPODS   MAXPODS   REPLICAS   AGE
php-apache   Deployment/php-apache/scale   305% / 50%  1         10        1          3m

and then, more replicas. For example:

NAME         REFERENCE                     TARGET      MINPODS   MAXPODS   REPLICAS   AGE
php-apache   Deployment/php-apache/scale   305% / 50%  1         10        7          3m

Here, CPU consumption has increased to 305% of the request.

So in your example (380%/50%) it means that you setup HPA to maintain an average CPU utilization across pods to 50% (by increasing and decreasing number of replicas - updating the deployment) and CPU consumption has increased to 380% so the deployment will be resized automatically.

Also check:

Upvotes: 1

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