Hi all! I was using Nginx Proxy Manager for a year i think, and like a week ago, when i decided to upgrade all of my apps on my truenas system, it went crazy. It means, every of my app is working, running (checked by hostip:port, they are actually working), but NONE of my proxies defined on NPM wo…

I have good news — I solved the problem, and I really hope it helps you too! It turned out to be something so simple from the beginning. The issue was the port! It was blocked by the router. After I almost gave up, I decided to monitor incoming requests to my TrueNAS instance from another PC on t…

You are absolutelly right, and i highly appretiate your comment. To be honest, i checked it before, so i know that all of my apps are on DIFFERENT network. So you are correct. But since on npm ui, on a proxy host edit section i used the host ip (for all of the apps), i tought the internal docker …

No problem, happy to (try) and help, to be honest, until about October last year I’d never used containers, it has been a steep learning curve, I dont see why any ip would have changed when you updated but then stranger things have happend, I use Portainer for my container management, just prefer t…

So i tried, but unfortunatelly no success. I deleted every one of nginx installations. I created a brand new one. I added the new nginx and for example radarr to the same network. Then i added a new proxy to npm. To the host ip i tried to add my truenas host ip first (as it was like for a year!) …

Ohh just 1 more thing that I thought off, again prob isnt an issue, but when I was configuring nginx, i had to manually change the webui ports of truenas away from 80/443 so that nginx cpuld listen on these ports Any chance something similar happening here?

That is already done. Truenas base ports were changed to custom like 2 years ago. Now the current instance of npm uses a custom port, and i do port forwarding on my router. But i tried to have an npm installation which listens on the normal 80/443 ports , no success. In every case i do port forw…

Any luck? I foolishly just did the same thing today (mass upgraded all apps) but did not upgrade my OS, and have had nothing but 521s since from NGINX.

Honestly, i did 1000x things to make it working, yes, it can be that i swihed to host network, but i don’t remember if i did it on NPM or if it was one of my Traefik test. If i did it, it was not working for sure. And as en extra, i remember i read it somewhere, that it is not recommended at all, …

This didn’t work for me. One thing I noticed is when checking if my ports are exposed, 80 shows as open while 443 shows as closed, even though the container says it is listening on 443. My router is forwarded correctly, so not sure why NGINX is refusing connections to 443, but I’m pretty sure once …

Absolutely nothing. But please if you solved it, share it with me :slight_smile: I’ll do the same! What i want to do now, install docker desktop on my other pc to host a new npm installation on a completely different environment. Of course its host ip will be different, so i have to create new p…

Nginx Proxy Manager suddenlynot working

Apps and Virtualization

Marcodian May 3, 2025, 7:10am 2

When you updated all your apps, did they change what docker network they were running on? I know nginx needs the apps to be on the same network, so an ip 172.16.1.1 ans 172.16.1.2 would work fine but 172.16.1.1 and 172.16.2.4 would not. I had a similar issue when 1st getring started with nginx, worth a go.

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Nginx Proxy Manager suddenlynot working

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