This commit modifies the k8s proxy application configuration to include a
new field named `ServerURL` which, when set, modifies
the tailscale coordination server used by the proxy. This works in the same
way as the operator and the proxies it deploys.
If unset, the default coordination server is used.
Updates https://github.com/tailscale/tailscale/issues/13358
Signed-off-by: David Bond <davidsbond93@gmail.com>
Adds a new k8s-proxy command to convert operator's in-process proxy to
a separately deployable type of ProxyGroup: kube-apiserver. k8s-proxy
reads in a new config file written by the operator, modelled on tailscaled's
conffile but with some modifications to ensure multiple versions of the
config can co-exist within a file. This should make it much easier to
support reading that config file from a Kube Secret with a stable file name.
To avoid needing to give the operator ClusterRole{,Binding} permissions,
the helm chart now optionally deploys a new static ServiceAccount for
the API Server proxy to use if in auth mode.
Proxies deployed by kube-apiserver ProxyGroups currently work the same as
the operator's in-process proxy. They do not yet leverage Tailscale Services
for presenting a single HA DNS name.
Updates #13358
Change-Id: Ib6ead69b2173c5e1929f3c13fb48a9a5362195d8
Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
