I’m trying to add DTR replicas and it’s failing on the dtr-ol overlay networking test. Errors:
FATA Overlay networking doesn't seem to be working correctly. Make sure you can create overlay networks in UCP and your firewall allows UDP traffic between UCP nodes. Reason: Failed to ping dtr-ol-test-2f6752edf0 from dtr-ol-test-b3168da599: exit code 1
FATA Failed to execute phase2: Problem running container 'dtr-phase2' from image 'docker/dtr:2.3.3': non-zero return code returned from docker/dtr:2.3.3 : 1
Sure enough, I can’t ping between containers (by container name or ip) when I
exec into them, however that network exists (and I can create other overlays). Also it appears that both containers are connected to it (by inspecting them on each host).
All UDP and TCP traffic is open (both in the same SG in AWS).