operator: fix gRPC dialing over UDS

edgelesssys / constellation

Constellation is the first Confidential Kubernetes. Constellation shields entire Kubernetes clusters from the (cloud) infrastructure using confidential computing.

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operator: fix gRPC dialing over UDS #3201

Closed burgerdev closed 1 week ago

burgerdev commented 1 week ago

Context

grpc.NewClient uses DNS as default resolver. This does not work for UDS, so we need to specify the resolver explicitly.

Proposed change(s)

Dial UDS with unix: prefix (see https://github.com/grpc/grpc/blob/master/doc/naming.md).

Related issue

Fixes edgelesssys/issues#711

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