Is there a way to do real health checks?

[marcofranssen]

Currenlyt healthz.Ping is used as an implementation for health checks.

spire-controller-manager/main.go

Lines 297 to 304 in 9b3a931

	if err := mgr.AddHealthzCheck("healthz", healthz.Ping); err != nil {
	setupLog.Error(err, "unable to set up health check")
	return err
	}
	if err := mgr.AddReadyzCheck("readyz", healthz.Ping); err != nil {
	setupLog.Error(err, "unable to set up ready check")
	return err
	}

Probably we could do better here by checking server socket or things like that.