I was helping a friend setup his new unRAID box today. First time I have used v6 as my system is still on v5.0.6. All in all everything went well, but I have a few questions about docker that a search didn't turn up answers to.

 

Bridge vs Host - Brand new install of v6. Spun up dockers for Plex, SB, couchpotato, and SAB. Left the networking as default in the template (host for Plex, bridge for all the others). The dockers all came up fine and you could access the gui for each. The problem came when trying to setup communication between dockers. Sickbeard and CP couldn't connect to SAB. SAB couldn't connect back to SB or CP to initiate post processing scripts. The only thing that fixed it was setting all 3 dockers to host mode. What am I missing?

 

I am planning to migrate my server soon as well. From what I've seen v6 and dockers are a massive improvement to v5 and plugins.

I was helping a friend setup his new unRAID box today. First time I have used v6 as my system is still on v5.0.6. All in all everything went well, but I have a few questions about docker that a search didn't turn up answers to.

 

Bridge vs Host - Brand new install of v6. Spun up dockers for Plex, SB, couchpotato, and SAB. Left the networking as default in the template (host for Plex, bridge for all the others). The dockers all came up fine and you could access the gui for each. The problem came when trying to setup communication between dockers. Sickbeard and CP couldn't connect to SAB. SAB couldn't connect back to SB or CP to initiate post processing scripts. The only thing that fixed it was setting all 3 dockers to host mode. What am I missing?

 

I am planning to migrate my server soon as well. From what I've seen v6 and dockers are a massive improvement to v5 and plugins.

 

When using bridge, to connect between containers you will need to point them to the external IP address of unRAID server, not 127.0.0.1 or 0.0.0.0.

Makes total sense due to the isolated nature of containers. I was purposely avoiding using the external IP as the box was at his workplace today and the subnet will change when he takes it home tonight, so it's the one thing I didn't try. Every possible combination of hostname, localhost, loopback address, etc that I tried failed. I knew it had to be something simple that I was missing.

 

Thanks very much gfjardim!