Problem passing through ports to Docker Apps

I've had a weird experiences with passing through ports ever since I started with OMV two years ago. I have OMV running on a rack mounted server that I acquired a while back. It has two network cards but only one is active. IP4 is active but IP6 is not.

So I've never been able to pass ports through to Docker apps. For example, I have recently started to dabble with Plex. In 30 seconds I can pass Plex through to a Plex app running on my personal windows PC but I can't do it to a version of Plex running in Docker on my server (an external port scanner verifies that it is not working when pointed at Plex on Docker). I had similar problems with other apps. For example, I followed Techno Dad's video on LetsEncrypt - same issue.

I also have VirtualBox running a windows instance on the same server. I have no problems passing ports through to various apps running in windows.

Any ideas? As you may have noticed I am running on V4. I should be upgrading to V5 this fall (it's tough to find a rainy day in which to do it).

Zitat von gderf

You will need to post your complete plex docker run statement, compose file, or docker create statement.

You should also examine the plex container log and post relevant sections.

To be honest I've never taken the time to fully learn Docker. I've been doing everything through the UI. Is there a very simple Docker app that I could install in order to test this out? Or should I post the details of the Plex installation?

Zitat von gderf

You should be reading the documentation that comes with every high quality and well supported docker image. All the information needed to succeed is right there.

But you have to post something. There are no mind readers here. Saying that it doesn't work alone is not helpful.

Well, yes - in my previous post I was trying to understand the best way to debug this. For all I know there is something in the network settings that could be an issue. This is not my area of expertise but I am happy to do anything that might help shed some light on this.

I have attached the current docker settings. The network is set to "Host".

Here is the image I am using: https://hub.docker.com/r/linuxserver/plex

Zitat von Agricola

You are dealing with multiple issues here. First, you are using OMV4 which is eol, or “end of life” and no longer supported. And, most likely the TDL videos you are using are tied to that version as well.

I hate to say it but you will be fighting an up-hill battle trying to fix Plex while running OMV4. You really should back up a few steps amd get OMV5 up and running and then start a fresh install of Plex Docker using Portainer (your first Docker installed) or using the command line.

As for tutorials, here are a couple from an OMV5 foundation that should help you with Plex:

[How-To] Use docker-compose files in Portainer

[How-To] Install Plex Media Server (PMS) container using OMV and docker-compose

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Thank you for the response. Yeah, I know that I need to brush up on all of this after I upgrade. I was just hoping that there might be a setting or something obvious that I might not know about. In my head I thought that maybe a couple of you would ask me to post a screen cap or two and if that doesn't figure it out then I would table it until after I upgrade.