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Kustomize»

Kubernetes support in Spacelift is driven by Kustomize with native support in kubectl.

We used Kustomize to make all resources created using the Spacelift Kubernetes support have unique labels attached to them:

  • spacelift-stack: <stack-slug>
  • app.kubernetes.io/managed-by: spacelift

All operations Spacelift does will be done only on resources with the spacelift-stack: <stack-slug>.

Long stack slugs

Kubernetes label values are limited to 63 characters. If your stack slug exceeds this limit, Spacelift will automatically shorten the label value by truncating the slug and appending a hash suffix to ensure uniqueness. Stacks with slugs of 63 characters or fewer are not affected.

If you are not using Kustomize, Spacelift will transparently create a kustomization.yaml file that will reference all yaml files in the Stack's project root and subdirectories.

If you are using Kustomize, then we will only add a label transformer to your kustomization.yaml file.