It seems I'm not allowed to connect to the osm postgres database from maps-tiles1.wmflab.org. I suspect the config of postgres has not yet been updated to know about the new eqiad-r ip range ?
psql -h osmdb.eqiad.wmnet -U osm gis psql: FATAL: no pg_hba.conf entry for host "172.16.5.154", user "osm", database "gis", SSL off