Currently, it is not possible to give --namespace along with --pod to hubble.

% hubble observe --from-namespace cilium --from-pod hubble-relay
invalid argument "hubble-relay" for "--pod" flag: filters --from-namespace and --pod cannot be combined

An alternative way to express this is the following:

% hubble observe --from-label io.kubernetes.pod.namespace=cilium --from-pod hubble-relay

The issue with this is that --from-pod hubble-relay is implicitly referring to the hubble-relay pod in the default namespace. Here I would expect to see the the Flows from the cilium/hubble-relay pod.

cc @michi-covalent @gandro @nathanjsweet