Bridge Networks in Docker

[dingsda]

Hello Forum.

This is my first post as I'm using Unraid for three days now :).

I already had the issue, that i couldn't copy some specific files to the share, and I found the solution here in the forum: Never use BTRFS in the Array It works since I have change to XFS.

 

But now I have a second Problem to which I can't find any answer here

 

I'm using 5 NIC's, it's important for me to separate some docker container to a specific nic. So I created 4 bridges: br1-4. Unraid is accessible by all 5 IP-Adresses, it works. I tested it also with some VM's, each bridge is working.

 

My problem is, I can't choose them for docker-containers, only for VM's.

This is what I see on creation of a new VM:

 

 

and this is what I see on creation of a new Docker container:

 

and this is my configuration:

 

As I thought, this is a bug, I contacted the support of Unraid. But unfortunately the Answer was, I have to use the forum to find an answer. I tried it, read about 60 topcis, but I couldn't find any information about this behavior.

 

Do someone know this problem, or have I misconfigured something?

 

Thank you very much

 

dd

 

[civic95man]

You can only use 1 network within Docker if they share the same gateway or subnet.  I ran into this issue myself when trying to dedicate one NIC to just a single container.  The response I got was to use a different gateway/subnet.  I still haven't tried it but it's on my todo list.  I know it was a real bummer for me.

 

This is where that was discussed:

 

 

 

Edited February 20, 2020 by civic95man

[dingsda]

Thank you very much. Starting with your answer I could dig deeper in this tipic. Now I know, that this is a docker-restriction and I have to use multiple gateway ip-addresses, what my entrprise-router doesn't support. So I have to work with VLAN's.

Best regards

dd