tbc, see T324695: beta-prometheus.wmflabs.org 502 Bad Gateway / T306068: Cloud VPS "deployment-prep" project Stretch deprecation
Creating deployment-prometheus03 with g3.cores4.ram8.disk20 now.
Ended up creating as deployment-prometheus05 because I had to re-create the VM twice (reusing hostnames didn't seem to work..) — same spec.