I saw Arturo referring to the decisions we made in Dublin about DNS naming in a phab task today. When I went to look at the page on Wikitech I realized that we had not strongly signaled there what the outcome of the discussions were and that there was a bit of ambiguity in the "winning" proposal. I have attempted to write up what I believe we collectively agreed on as https://wikitech.wikimedia.org/wiki/Wikimedia_Cloud_Services_team/EnhancementProposals/DNS_domain_usage#Resolution.
Please review this write up and be ready to quickly thumbs up/thumbs down the write up in the 2019-07-23 WMCS team meeting. Folks on this list who do not attend that meeting but who wish to object to the write up can do so by responding to this thread. +1 votes via email are not necessary.
Bryan