I stumpled upon discovery-system and cannot make out what it is.
Maybe https://wikitech.wikimedia.org/wiki/DNS/Discovery ?
Maybe related to https://phabricator.wikimedia.org/T95662 or https://phabricator.wikimedia.org/T125069 ?
Could someone please add more info / a link to on-wiki docs to https://phabricator.wikimedia.org/project/manage/1231/ ? That would allow triaging. :P (And maybe avoid misfiled tickets like T127003.) TIA.