Goldilocks

VPA in Kubernetes with Goldilocks

Before we dig into Goldilocks tool, we need to first understand what is VPA (Vertical Pod Autoscaler)?

VPA (Vertical Pod Autoscaler)

Vertical Pod Autoscaler (VPA) frees the users from necessity of setting up-to-date resource limits and requests for the containers in their pods. When configured, it will set the requests automatically based on usage and thus allow proper scheduling onto nodes so that appropriate resource amount is available for each pod. It will also maintain ratios between limits and requests that were specified in initial containers configuration.

VPA can work in 4 modes. To get more information about VPA, can get it from here.

  • Auto
  • Recreate
  • Initial
  • Off

So now as we know about VPA in Kubernetes, let’s understand about Goldilocks tools & how we can utilize it and also a quick look on the installation.

Goldilocks

Goldilocks is a utility that can help you identify a starting point for resource requests and limits and also helps to beautify the recommendations through UI. It has below pre-requisites.

To utilize this tool, we need to run VPA in Off mode which means recommendation mode. If VPA doesn’t exists already, this tool can also create it for each deployment in a namespace and then queries it for information.

If VPA already exists in a namespace? You just need to label the existing VPA with below labels.

label:
creator: Fairwinds
source: goldilocks

Installation

There are 2 methods available to install.

  • Kubectl
  • Helm

We will cover the helm way, which is easier and recommended. Following are the commands to install.

helm repo add fairwinds-stable https://charts.fairwinds.com/stableHelm v2:
helm install --name goldilocks fairwinds-stable/goldilocks
Helm v3:
helm install goldilocks fairwinds-stable/goldilocks

Finally to be able to let this tool see all the namespaces, you need to label namespaces as well with below label.

labels:
goldilocks.fairwinds.com/enabled: "true"

All done! Now you can use the port-forward to see the dashboard on http://localhost:8080

kubectl port-forward svc/goldilocks-dashboard 8080:80
Goldilocks Dashboard

--

--

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Aziz Zoaib

Aziz Zoaib

DevOps, AWS, GCP, Terraform, Kubernetes, CI/CD