tailscale.com/v1alpha1

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Cluster-scoped Resource

ProxyGroup

        ProxyGroup defines a set of Tailscale devices that will act as proxies.
Depending on spec.Type, it can be a group of egress, ingress, or kube-apiserver
proxies. In addition to running a highly available set of proxies, ingress
and egress ProxyGroups also allow for serving many annotated Services from a
single set of proxies to minimise resource consumption.

For ingress and egress, use the tailscale.com/proxy-group annotation on a
Service to specify that the proxy should be implemented by a ProxyGroup
instead of a single dedicated proxy.

More info:
* https://tailscale.com/kb/1438/kubernetes-operator-cluster-egress
* https://tailscale.com/kb/1439/kubernetes-operator-cluster-ingress

For kube-apiserver, the ProxyGroup is a standalone resource. Use the
spec.kubeAPIServer field to configure options specific to the kube-apiserver
ProxyGroup type.