Docker in proxmox & outside access

Started by Andy259, January 02, 2025, 03:19:11 PM

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Community,

New user here well newish, so a bit of background:

For the last couple of years I've been running Plesk(webserver) on a homebased server, I then discovered Proxmox and Docker (I can run docker in Plesk, but I would much rather have a separate server, so I installed Proxmox on another machine, then came the inevitable port clashes etc, so I got a second IP that was a month ago, I got another machine and installed Opnsense, so here I am trying to figure out HOW to get to the docker containers from OUTSIDE my network i.e point services i.e the ARRS to a domain name.

Here's my setup:

ROUTER OPNSENSE (PUBLIC IP's 194.###.###.37 & 194.###.###.38) The first IP Is the first WAN IP and the one that is setup
during opnsense wizard, the second has been added as virtual IP
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SERVER 1 PLESK - 194.###.###.37 >> 192.168.1.109 (via nat 1:1)

ALL WORKING WELL AND AS IT SHOULD.(just used this as an example as I'm sure 1:1 is setup correctly and this confirms)

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This is the confusing bit i'll be as clear as possible.

SERVER 2 PROXMOX - 194.###.###.38 >> 192.168.1.112

WORKS CORRECTLY WITH 1:1 NAT AS LONG AS THE BELOW 1:1 NAT DOESN'T EXIST

PROXMOX CONTAINER WITH DOCKER 194.###.###.38 >> 192.168.1.115

So in essence if I delete the Proxmox rules then Portainer is accesible through 194.###.###.38:9000 and also via a url.
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Some additional info, I followed a couple of tutorials which I linked below

The first is to install docker, portainer and nginx proxy manager.

https://wiki.opensourceisawesome.co...er-docker-compose-and-more-in-under-5-minutes

This second one basically explains nginx proxy manager (however, this video is on the assumption you are either on a bare metal server with docker installed directly on Ubuntu OR you are using a vps from digital ocean and the like (so I followed the directions for this as it matched my use case more closely(ish) so using this method I CAN get to those services on my public IP (portainer, nginx proxy manager) but ONLY if I disable the portforward for proxmox which is then not accessible via the public ip, I'm missing something simple and im sure i saw a vid on exactly how t do this but can't find it there's plenty on installing docker in a proxmox container or vm but then they dump you and don't tell you how to reach the services from the outside world.

Video about nginx etc which i followed and got me to the point of accessing the docker containers.

https://www.youtube.com/watch?v=cjJVmAI1Do4

Please bear in my mind I am new to proxmox, opnsense and docker so please be fairly specific in replies and if you can tag tutorials that would be great.