Transfert to a new server with Cold-standby backup

dflahaut

hi all, I wanted to transfer my mailcow server from a PC on a proxmox VM. I used cold-standy. Everything was OK but … when I tried “docker-compose up -d” on the new machine, I have the message “services.nginx-mailcow.ports contains an invalid type, it should be a number, or an object”.
Did you ever had this message ?

esackbauer

No, but are you sure that the ports for mailcow are not already in use by something else on the new server?
Mailcow-nginx tries to bind on port 80 and 443.

pkernstock

My guess is that the docker-compose file is a bit messed up or missing entries? (The error services.nginx-mailcow.ports sounds like the docker-compose structure) Did you ever manually change the file and maybe broke its indentation?

dflahaut

The source is a Debian 11 and the copy is a brand new Debian 12 without anything else.
I made no changes in the files. I even checked the two files (the source and the copy) : they are exactly the same !

pkernstock

Looks like docker-compose doesn’t agree here. Have you also copied the .env file accordingly?

dflahaut

yes .. the files in the directory /opt/mailcow-dockerized are the same in the source and in the copy ..

esackbauer

and you are using the latest docker compose 2.x version?

dflahaut

hi @esackbauer : many many thanks ! That was the problem : I was using v1.9 ! It’s a stupid dummy mistake.
Now, docker-compose up -d starts.

bkalai

I did the same but when ran docker compose up -d I got this
already exists but was not created by Docker Compose. Use external: true