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certificate-objects.md

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Certificate Objects

Certificate objects are used to declare one or more Let's Encrypt issued TLS certificates. Cetificate objects are consumed by the Kubernetes Certificate Manager.

Before you can create a Certificate object you must create the Certificate Third Party Resource in your Kubernetes cluster.

Required Fields

  • apiVersion - The Kubernetes API version. See Certificate Third Party Resource.
  • kind - The Kubernetes object type.
  • metadata.name - The name of the Certificate object.
  • spec.domain - The DNS domain to obtain a Let's Encrypt certificate for.
  • spec.email - The email address used for a Let's Encrypt registration.
  • spec.provider - The name of the dns provider plugin. See https://github.com/kelseyhightower/dns01-exec-plugins
  • spec.secret - The Kubernetes secret that holds dns provider configuration.
  • spec.secretKey - The Kubernetes secret key that holds the dns provider configuration data.

Example

The following Kubernetes Certificate configuration assume the following:

  • The googledns dns01 exec plugin is available from the kube-cert-manager container.
  • The hightowerlabs.com domain is registered.
  • The hightowerlabs.com domain is managed by Google Cloud DNS under the hightowerlabs Google Cloud project.
  • A Kubernetes Secret named hightowerlabs exists with a key named service-account.json which holds a Google service account with permissions to manage DNS records for the hightowerlabs.com domain.

Example Certificate Object

apiVersion: "stable.hightower.com/v1"
kind: "Certificate"
metadata:
  name: "hightowerlabs-dot-com"
spec:
  domain: "hightowerlabs.com"
  email: "kelsey.hightower@gmail.com"
  provider: "googledns"
  secret: "hightowerlabs"
  secretKey: "service-account.json"