@gardnervickers just verifying that i've got this right, but i'm now running the aeron media driver in a separate docker container, and as far as i understand, this then means that Onyx's external address becomes the address of the aeron media driver. this makes sense, but since this seems completely undocumented, i wanted to double check

Yes but you should be colocating both containers on the same host so they can communicate over shared memory

yes, it's more related on how other peers would communicate with a single peer

i think docker is a bit of a special case here, in where the media driver is colocated with the peer on the same physical host, but cannot be communicated with using the same hostname