tailscale/cmd/k8s-operator/deploy/crds/tailscale.com_dnsconfigs.yaml

apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
  annotations:
    controller-gen.kubebuilder.io/version: v0.13.0
  name: dnsconfigs.tailscale.com
spec:
  group: tailscale.com
  names:
    kind: DNSConfig
    listKind: DNSConfigList
    plural: dnsconfigs
    shortNames:
      - dc
    singular: dnsconfig
  scope: Cluster
  versions:
    - additionalPrinterColumns:
        - description: Service IP address of the nameserver
          jsonPath: .status.nameserver.ip
          name: NameserverIP
          type: string
      name: v1alpha1
      schema:
        openAPIV3Schema:
          description: 'DNSConfig can be deployed to cluster to make a subset of Tailscale MagicDNS names resolvable by cluster workloads. Use this if: A) you need to refer to tailnet services, exposed to cluster via Tailscale Kubernetes operator egress proxies by the MagicDNS names of those tailnet services (usually because the services run over HTTPS) B) you have exposed a cluster workload to the tailnet using Tailscale Ingress and you also want to refer to the workload from within the cluster over the Ingress''s MagicDNS name (usually because you have some callback component that needs to use the same URL as that used by a non-cluster client on tailnet). When a DNSConfig is applied to a cluster, Tailscale Kubernetes operator will deploy a nameserver for ts.net DNS names and automatically populate it with records for any Tailscale egress or Ingress proxies deployed to that cluster. Currently you must manually update your cluster DNS configuration to add the IP address of the deployed nameserver as a ts.net stub nameserver. Instructions for how to do it: https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/#configuration-of-stub-domain-and-upstream-nameserver-using-coredns (for CoreDNS), https://cloud.google.com/kubernetes-engine/docs/how-to/kube-dns (for kube-dns). Tailscale Kubernetes operator will write the address of a Service fronting the nameserver to dsnconfig.status.nameserver.ip. DNSConfig is a singleton - you must not create more than one. NB: if you want cluster workloads to be able to refer to Tailscale Ingress using its MagicDNS name, you must also annotate the Ingress resource with tailscale.com/experimental-forward-cluster-traffic-via-ingress annotation to ensure that the proxy created for the Ingress listens on its Pod IP address. NB: Clusters where Pods get assigned IPv6 addresses only are currently not supported.'
          type: object
          required:
            - spec
          properties:
            apiVersion:
              description: 'APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
              type: string
            kind:
              description: 'Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
              type: string
            metadata:
              type: object
            spec:
              description: 'Spec describes the desired DNS configuration. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status'
              type: object
              required:
                - nameserver
              properties:
                nameserver:
                  description: Configuration for a nameserver that can resolve ts.net DNS names associated with in-cluster proxies for Tailscale egress Services and Tailscale Ingresses. The operator will always deploy this nameserver when a DNSConfig is applied.
                  type: object
                  properties:
                    image:
                      description: Nameserver image.
                      type: object
                      properties:
                        repo:
                          description: Repo defaults to tailscale/k8s-nameserver.
                          type: string
                        tag:
                          description: Tag defaults to operator's own tag.
                          type: string
            status:
              description: Status describes the status of the DNSConfig. This is set and managed by the Tailscale operator.
              type: object
              properties:
                conditions:
                  type: array
                  items:
                    description: ConnectorCondition contains condition information for a Connector.
                    type: object
                    required:
                      - status
                      - type
                    properties:
                      lastTransitionTime:
                        description: LastTransitionTime is the timestamp corresponding to the last status change of this condition.
                        type: string
                        format: date-time
                      message:
                        description: Message is a human readable description of the details of the last transition, complementing reason.
                        type: string
                      observedGeneration:
                        description: If set, this represents the .metadata.generation that the condition was set based upon. For instance, if .metadata.generation is currently 12, but the .status.condition[x].observedGeneration is 9, the condition is out of date with respect to the current state of the Connector.
                        type: integer
                        format: int64
                      reason:
                        description: Reason is a brief machine readable explanation for the condition's last transition.
                        type: string
                      status:
                        description: Status of the condition, one of ('True', 'False', 'Unknown').
                        type: string
                      type:
                        description: Type of the condition, known values are (`SubnetRouterReady`).
                        type: string
                  x-kubernetes-list-map-keys:
                    - type
                  x-kubernetes-list-type: map
                nameserver:
                  description: Nameserver describes the status of nameserver cluster resources.
                  type: object
                  properties:
                    ip:
                      description: IP is the ClusterIP of the Service fronting the deployed ts.net nameserver. Currently you must manually update your cluster DNS config to add this address as a stub nameserver for ts.net for cluster workloads to be able to resolve MagicDNS names associated with egress or Ingress proxies. The IP address will change if you delete and recreate the DNSConfig.
                      type: string
      served: true
      storage: true
      subresources:
        status: {}