Hassle-Free Way To Transfer Elixir App From Qubes VM to Proxmox VM?

Questions / Help
1

I have an Elixir web app that uses a Postgres DB, running in a Debian 11 VM on Qubes.

I’m trying to transfer the app to a Proxmox Debian 11 VM.

Everything works, except when transfering the database, I get 500 server errors.
I’ve tried dumping the DB and restoring.
I’ve tried a Pgadmin4 backup and restore.
I’ve tried various rsyncs.

I still end up with 500 server errors.

Is there a simple way to just get a clone of the VM from Qubes to Proxmox… and hopefully solve the 500 server errors issue?

2

Not sure anyone can help you without any error logs. Can you post the exact error that’s shown when HTTP 500 is triggered?

3

Depending on how the VM is setup in Qubes you should able to use a conventional backup method for migration. There are a few good pages on the Proxmox site about migration. I’d start with this one, Migrate_to_Proxmox_VE, and then check the “See Also” references as well.

4

Solved…
Had to clean the deps to get it to work.

mix deps.clean bcrypt_elixir
mix deps.compile bcrypt_elixir
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5

Glad you got it sorted out. Tangentially - if you’ve got flexibility to consider Proxmox alternatives, check out Incus. It is IMO more flexibile / configurable / scriptable. Incus runs on any recent Linux distribution, so you can setup prototype environments on your Linux desktop, and run the same configuration on a datacenter VM. Nice for testing and running distributed Elixir apps.

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