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Migrate Docker Containers from VM to NFS Share? (lemmy.world)

submitted 12 hours ago by stardustsystem@lemmy.world to c/selfhosted@lemmy.world

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Hello everybody, happy Monday.

I'm hoping to get a little help with my most recent self-hosting project. I've created a VM on my Proxmox instance with a 32GB disk and installed Ubuntu, Docker, and CosmOS to it. Currently I have Gitea, Home Assistant, NextCloud, and Jellyfin installed via CosmOS.

If I want to add more services to Cosmos, then I need to be able to move the containers from the VM's 32GB disk into an NFS Share mounted on the VM which has something like 40TB of storage at the moment. My hope is that moving these Containers will allow them to grow on their own terms while leaving the OS disk the same size.

Would some kind of link allow me to move the files to the NFS share while making them still appear in their current locations in the host OS (Ubuntu 24.04). I'm not concerned about the NFS share not being available, it runs on the same server virtualizing everything else and it's configured to start before everything else so the share should be up and running by the time the server is in any situation. If anyone can see an obvious problem with that premise though, I'd love to hear about it.

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[–] mhzawadi@lemmy.horwood.cloud 2 points 2 hours ago

If you have your services in compose files, you can point the volumes to anywhere. Even NFS.

Like the below config

volumes: pihole01: driver: local driver_opts: type: 'none' o: 'bind' device: '/mnt/data/docker/pihole01'