App Refused Connection [Mariadb]

[tom93]

This might be similar to my issue, which turned out to be due to the recent release of shared IPs:

[Outage?] "Connection reset by peer" when using non-default ports

By default, we allocate a shared IP address on Nomad platform, which only supports HTTP/S on 80/443. Running flyctl ips allocate-v4, as you did with Machines, will set you up with a dedicated IP which you can use custom ports with. (Do note we will start charging $2/mo for dedicated IPs in January.)

You can check whether your app currently has a dedicated IP or shared IP by running flyctl ips list. The TYPE column says “public” for a dedicated IP and “public (shared)” for a shared IP.