Kubernetes YAML Generator

#1

Post by paulstovell » Wed, Sep 09, 2020, 10:19 AM UTC

Re: Kubernetes YAML Generator

#2

Post by paulstovell » Wed, Sep 09, 2020, 10:21 AM UTC

We built this internally to test that the UI we built for Kubernetes deployments was producing the expected YAML. Thought it would be useful to share.

Re: Kubernetes YAML Generator

#3

Post by Ciantic » Wed, Sep 09, 2020, 12:01 PM UTC

Looks very useful. In my opinion the configuration format should have been built like this from the get go.

Clear schema (like TypeScript interfaces or something similar) which allows generating an UI.

Re: Kubernetes YAML Generator

#4

Post by Schatel » Wed, Sep 09, 2020, 12:08 PM UTC

Awesome! Was waiting for someone to build it :-)

Re: Kubernetes YAML Generator

#5

Post by Niksko » Wed, Sep 09, 2020, 12:10 PM UTC

Ooooh nice! When I saw the title I was hoping this is what it would be. I'd dreamed of building something like this, but never had the time or the buy in.

Aside from making it easy to generate k8s manifests, this could also be a great learning tool. If you allowed this to generate multiple resources that are linked, it could be a great illustration of how different resources fit together.

Re: Kubernetes YAML Generator

#6

Post by 1ba9115454 » Wed, Sep 09, 2020, 12:11 PM UTC

We're using Pulumi https://www.pulumi.com/ to do our K8 configuration.

We can use TypeScript interfaces (which give us nice ide code completion) to define our yaml.

we can then create functions where we would normally duplicate Yaml. Really nice. https://www.pulumi.com/kubernetes/

Re: Kubernetes YAML Generator

#7

Post by gravypod » Wed, Sep 09, 2020, 12:18 PM UTC

Super cool to see these sorts of tools. They're great for learning the kube API.

For production-y things however, some meta-config language that allows deterministic templateing would be a huge improvement. It allows you to make sweeping/uniform infrastructure changes from a single library or tool change.

Kubecfg is a good example of the basics one could implement [0] although it's examples aren't as fully fledged and organized as they could be.

[0] - https://github.com/bitnami/kubecfg/blob/master/examples/gues...

Re: Kubernetes YAML Generator

#8

Post by q3k » Wed, Sep 09, 2020, 12:19 PM UTC

Ciantic wrote: post #3

Looks very useful. In my opinion the configuration format should have been built like this from the get go. Clear schema (like TypeScript interfaces or something similar) which allows generating an UI.

All of the standard Kubernetes resource definitions have a schema [1] [2] which is already used to, for instance, generate Go code [3] and documentation [4].

[1] - https://kubernetes.io/docs/concepts/overview/kubernetes-api/...

[2] - https://github.com/kubernetes/kubernetes/blob/release-1.19/a...

[3] - https://godoc.org/k8s.io/client-go/kubernetes/typed/core/v1

[4] - https://kubernetes.io/docs/reference/generated/kubernetes-ap...

Re: Kubernetes YAML Generator

#9

Post by burgerquizz » Wed, Sep 09, 2020, 12:21 PM UTC

This is awesome. It is so easy to make mistakes when configuring your k8s services

Re: Kubernetes YAML Generator

#10

Post by q3k » Wed, Sep 09, 2020, 12:24 PM UTC

gravypod wrote: post #7

Super cool to see these sorts of tools. They're great for learning the kube API. For production-y things however, some meta-config language that allows deterministic templateing would be a huge improvement. It allows you to make sweeping/uniform infrastructure changes from a single library or tool change. Kubecfg is a good example of the basics one could implement [0] although it's examples aren't as fully fledged an…

I can second using jsonnet and kubecfg for this. Not only you start out with some very useful abstraction from kube.libsonnet, but are also able to build your own abstractions easily, ones that are specific to you organization/codebase/release cycle. All from a declarative, lazily evaluated, pure language.