It says in the post that people assume they need more coffee

You were correct, thank you so much. The apps were in the default network docker0. I looked into it, and the easiest option for my situation was simply to create another bridge network and move my apps into that. Now readarr can find Host = Calibre.

For torrents I don't have an incomplete folder. As I'm using a seedbox it doesn't seem necessary.

Interesting idea, I've never done this before. I tried opening the console from within the sonarr portainer container. That failed with "unable to retrieve image details"

On searching this, I was able to connect using:

sudo docker exec -it sonaar bash

This put me at the root of the container, and from there, I could navigate through:

root@xx:/data/torrents/rtorrent/Completed/tv-sonarr

From there I could see the file. But the permissions were for user abc and group "users". But I found the same when I browsed to the usenet downloads area, so I think this is more because of the way I logged in to root. I don't have any issues with usenet and sonaar. ID from there shows my uid as 0 and gid 0

In the log file, verbatim. In sonarr (queue page) it still says seedit4me

Thanks for your insights.

The router is set up to give the PC a static IP already. I have now gone into the Networks page in Ubuntu desktop, set the IPv4 method from Automatic DHCP to Manual, and added my static IP there.

The arrs and other docker containers all use the same bridge network (and not the default network). None except for Plex are set to use Host.

I have removed Plex again and added it once more to the docker. Unfortunately Plex logs are still showing the same issue.

OK awesome, thank you for reassuring. I did setup docker first and added portainer with docker, so it sounds like I'm on the right track. Now I can move on to the arrs and will watch a few guides on that.

Yes, I'm using hub.docker.com and portainer. The other 7 or so containers are in bridge mode on the network I set up. Plex, per the linuxserver.io docs, needs to be under network mode host.

I have set port forwarding on my router to allow external access to port 32400.

Lol I will. If only you knew how long I have spent getting this right so far. But worth it, it's working perfectly at the moment .

I don't think the issue is the volume because sonarr is finding my usenet downloads.

The actual folder structure is /data/usenet/download. sonarr is given the volume mount: /data
It gets the download location from SAB. All works fine.

Equating this to my situation, I am expecting the folder mapping to put the download in the location /data/torrents/rtorrent etc Again this matches the info sonarr receives from rutorrent. And the volume mount /data should be allowing access same as it gets to the usenet folders.