Support for Unix Domain Sockets has been introduced in Windows Server 2019 and works across containers as well as host and container as long as the processes running in containers are listening on the socket. If a process from within a container wishes to connect to a domain socket that a process on the host OS is listening on, Windows returns a permission error. This scenario however does not arise in the context of interactions between Kubelet, CSI Node Driver Registrar and CSI Node Plugin as these involve a process in a container listening on a domain socket (CSI Node Driver Registrar or CSI Node Plugin) that a process on the host (Kubelet) connects to.
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