Kubernetes Deployment vs Helm Release

[ta...@appscode.com]

Hi,

I am trying to learn about Helm. What is the relationship between Kubernetes Deployment & Helm Release?

Thanks,

-Tamal

[Michelle Noorali]

Hey Tamal,

A helm release is what you get from installing a helm chart into your cluster. A chart contains a set of files that describe Kubernetes resources that work together. For example, a chart might include a Kubernetes Deployment resource definition and a Kubernetes Service definition. When you install that chart into your cluster via helm, the result is a helm release with some given name.

A helm release is an abstraction of helm that lets you keep track of the resources you've installed via the chart where as a Kubernetes Deployment is a Kubernetes resource type. 

To go a step further, a Kubernetes Deployment allows you to easily scale, update, and manage your Pods/ReplicaSets where as a Helm release allows you to easily install and manage a group of related Kubernetes resources that may be different resource types.

More information on charts: https://github.com/kubernetes/helm/blob/master/docs/charts.md

Hope that helps!

Cheers,

Michelle

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