Does anyone know of a hosting service that offers Silverblue as a possible choice for OS?
It seems to me that for a server running only docker services the greatly reduced attack surface of an immutable distro presents a definitive advantage.
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I’m using NixOS in Azure - Azure allows creating a VM out of a disk image, and NixOS has tools to create preconfigured disk images. You inject your SSH keys and stuff straight into the image, then upload and create a VM. A bit fiddly, but I got it to work.
I don’t know about Silverblue, but I know you can use NixOS on pretty much any VPS using the tool nixos-infect.
Not sure how it would reduce your attack surface though. That’s not really the problem that they are trying to solve.
nixos-anywhere also works well for this use case.
I will respond even though this post is several days old because I actually do this. I have some vpses on Hetzner that run Silverblue no problem. It is not an install option available by default there, but support uploaded an iso under my account quickly when asked.
If you do it, change the active firewalld zone. The default is for a desktop, so not great for vps space.
How would describe the “reduced attack surface” of something running a container?
That phrase has practically lost all meaning.
Because even if an attacker could gain access even as root he cannot modify system files. This is why immutable OS distros are called immutable.
Because even if an attacker could gain access even as root he cannot modify system files.
They 100% can.
