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Documentation Index

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Kubernetes (also known as K8s) is an open source system for automating deployment, scaling, and management of containerized applications. Use env zero with Kubernetes to get Pull Request Plans and Drift Detection across your environments. Kubernetes uses YAML or JSON files to declare the resources it manages.

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Environment Deployment

  1. Create a Kubernetes Template
  2. Follow our guide to Connect Your Kubernetes Cluster
  3. Create an environment. env zero will label the resources for each environment separately, so no collisions will occur when using the same template several times.
Cluster AuthenticationCluster authentication varies from one provider to another. See the Connect Your Kubernetes Cluster guide for details.

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Execution Steps

In addition to the common steps such as Clone, Loading Variables, etc., a Kubernetes environment in env zero has the following features:
  1. K8s Label Resources - env zero uses Kustomize to label resources per environment, so you do not need to change files.
    kustomize create --autodetect
    kustomize edit remove resource metadatLabelTransformer.yaml
    kustomize edit add transformer metadatLabelTransformer.yaml
  2. K8s Diff -
    kubectl apply -k . --prune --dry-run=server -l env0-environment-id=<environmentId>
    kubectl diff -k . -l env0-environment-id=<environmentId>
  3. K8s Apply - kubectl apply -k . --prune -l env0-environment-id=<environmentId>
  4. K8s Delete - kubectl delete "$(kubectl api-resources --verbs=delete -o name | tr "\n" "," | sed -e 's/,$//')" --ignore-not-found -l env0-environment-id=<environmentId>
Interface screenshot showing configuration options
Labels descriptionThe following labels are added to each resource created by env zero:
  • env0-environment-id=<environmentId>. All resources created for a certain environment are labeled with the environment’s ID.
  • app.kubernetes.io/managed-by: env0. Regardless of the environment, every resource is labeled with the recommended label managed-by
Supported versionsThe kubectl version is 1.23, and the kustomize version is 4.5.4.
It is recommended for the remote cluster not to be more than one minor version ahead or behind the client’s.
Kubernetes’s documentation goes back to version 1.20, therefore older versions won’t be supported.

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Next steps