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NOTE: This project is no longer maintained, a good replacement is kubeconform

kubeval is a tool for validating a Kubernetes YAML or JSON configuration file. It does so using schemas generated from the Kubernetes OpenAPI specification, and therefore can validate schemas for multiple versions of Kubernetes.

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$ kubeval my-invalid-rc.yaml
WARN - fixtures/my-invalid-rc.yaml contains an invalid ReplicationController - spec.replicas: Invalid type. Expected: [integer,null], given: string
$ echo $?

For full usage and installation instructions see