bad gateway 502 for localhost

[gkucmierz]

I am trying to setup proxy hosts for various applications running on docker.

But whenever I use localhost or 127.0.01 host Then I have bad gateway error.

When I set host as machine ip address in my local network 192.168.x.x then it works, but it requires from me allow opened ports on ufw and also I am assuming it produces unnecessary traffic in my local network.

What can cause this problem?

[maurxce]

Have you tried connecting the containers via a network and then using their respective hostnames?

[gkucmierz]

No, I am not sure how to do that yet.

[maurxce]

I haven't used it myself yet, but it should be possible.
I'd recommend reading this: Networking in Compose assuming you're using compose files

[blazejwiecha]

So are here any way to resolve error?
In my case all works till go to https ... then error gateway
on http works ok

[kpleines]

Same Problem here.
I've installed a fresh nginx prody manager an login works fine on first startup.
After a reboot I got the "Bad Gateway" on login. Proxy feature itself works fine.

I use IP for login to npm.