k8smap 0.1.0

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k8smap

k8smap is a tool to generate a diagram a diagram text file from kubernetes resource descriptions. I implemented this to get a faster understanding of the resources in a given helm chart. Also it helps me document the infrastructure automatically visually for my colleagues.

Quick start

poetry add k8smap

k8smap -i filename.yaml

Example

You can clone the repo and test it locally.

helm template example > example.yaml 
poetry run k8smap -i infratest.yaml

This will generate the following output to file file output.d2:

Service_pawn:pawn {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/svc.svg
  shape: image
}
Service_bishop:bishop {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/svc.svg
  shape: image
}
Pod_bishop-nginx:bishop-nginx {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/pod.svg
  shape: image
}
Deployment_nginx-deployment:nginx-deployment {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/deploy.svg
  shape: image
}
Pod_nginx-deployment:nginx-deployment {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/pod.svg
  shape: image
}
Ingress_pawn-ingress:pawn-ingress {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/ing.svg
  shape: image
}
Ingress_bishop-ingress:bishop-ingress {
  icon: https://raw.githubusercontent.com/kubernetes/community/master/icons/svg/resources/labeled/ing.svg
  shape: image
}
Service_pawn --> Pod_nginx-deployment
Service_bishop --> Pod_bishop-nginx
Deployment_nginx-deployment --> Pod_nginx-deployment
Ingress_pawn-ingress --> Service_pawn
Ingress_bishop-ingress --> Service_bishop

To generate an image for this graph you can run d2.

d2 output.d2 out.svg

Or generate a mermaid flowchart.

mapk8s -i filename.yaml -f mermaid

Components

So far the following components are implemented:

• Pod
• Deployment
• Ingress
• Service
• Service Account
• Network Policy
• Cron Job
• Job
• Config Map
• Secret
• Volume
• Persistent Volume
• Persistent Volume Claim

Output formats

So far the following output languages are supported:

• D2
• Mermaid

Use the -f [d2, mermaid] flag to specify the format.

License

This is unclear right now and needs to be checked. As I am using in this code svg from Kubernetes, I first have to evaluate what license I can use.