Nodeless Cost Calculator

The Nodeless Cost Calculator is a dashboard that shows the current cost of your Kubernetes cluster and the projected cost of running an equivalent cluster on Nodeless Kubernetes. The projected cost is calculated by chosing an instance type for each pod based on the resource requests and limits specified in the pod spec.

Installation

Follow these instructions to install the Nodeless Cost Calculator from the command line.

Prerequisites

• A Kubernetes cluster
• Kustomize

Install from the command line

You need to set cloud credentials in kustomize/overlays/<your-provider>/config.toml and then apply those with kubectl -k . Cloud credentials are used to fetch on-demand and spot prices.

AWS

In AWS config.toml

region = "us-east-1"

# Static credentials
accessKey = ""
secretKey = ""

and then run kustomize build kustomize/overlays/azure | kubectl apply -f -

GCE

In GCE config.toml:

# base64 encoded credentials in json format (base64 encoded content of the credential file)
credentials = ""

# credentialsFile = ""

# project = ""

and then run kustomize build kustomize/overlays/gce | kubectl apply -f -

Azure

In Azure config.toml:

subscriptionId = ""

# Client credentials
clientId = ""
clientSecret = ""
tenantId = ""

and then run kustomize build kustomize/overlays/azure | kubectl apply -f -

Scraping spot prices usually takes up to 5-7 minutes. Once it's done you should see that all containers are ready: nodeless-cost-calculator-5567f8585-b9d5z 3/3 Running 0 5m8s

Once the nodeless-cost-calculator deployment is running, the easiest way to connect to the pod is to use kubectl port-forward

kubectl -n$NAMESPACE port-forward $(kubectl -n$NAMESPACE get pod -l app.kubernetes.io/name=nodeless-cost-calculator -o custom-columns=:metadata.name --no-headers) 5000

Uninstall

kubectl -n$NAMESPACE delete Deployment,ServiceAccount,ClusterRole,ClusterRoleBinding -l app.kubernetes.io/name=nodeless-cost-calculator

Running with static data input

Once you have data about nodes and pods in json, you can run cost calculator in your local cluster and still get calculated results. To do this, you need to overwrite input_example.json.

1. Get nodes data: kubectl get nodes -o json | jq -r '.items[] | {name: .metadata.name, labels: .metadata.labels}' > nodes.json
2. Get workloads data: kubectl get pods --all-namespaces -o json | jq -r '.items[] | { name: .metadata.name, namespace: .metadata.namespace, containers: .spec.containers[].resources, initContainers: .spec.initContainers }' > pods.json
3. Place files in scripts and run python data_sanitizer.py from there. This will create input file from your data for cost-calculator.
4. Copy this file to kustomize/overlays/file-input/input_example.json. Now you're ready to deploy cost-calculator to your cluster using kustomize build kustomize/overlays/file-input | kubectl apply -f -

Unsupported features

• Reserved instance pricing
• Custom cloud pricing
• Storage costs
• Network costs
• Cost of nodes with GPU instances