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Colmena

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A simple, stateless NixOS deployment tool - https://github.com/zhaofengli/colmena116 Servers

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18 Oct 2022
@linus:schreibt.jetztLinux Hackerman and it decrypts the secret from secrets/$hostname/loki-password.gpg and copies it over at deployment time 09:05:05
@shyim:matrix.orgShyim Linux Hackerman: So I need the private gpg key on the machine right? :D 09:05:44
@linus:schreibt.jetztLinux Hackermanthe advantage of this approach is that the secrets can theoretically not get copied to the nix store (in practice they do, because I use Flakes)09:05:53
@linus:schreibt.jetztLinux Hackerman Shyim: only on the machine from which you're deploying 09:06:01
@shyim:matrix.orgShyimAHHH. cool09:06:43
@linus:schreibt.jetztLinux Hackermanbut I think I'll be switching to agenix or sops-nix at some point in the future, partly because this approach is colmena-specific and I'm not sure I want to stick with colmena09:06:57
@linus:schreibt.jetztLinux Hackermanand partly because the secrets are persisted unencrypted on the target machines' disks, which I'd also prefer not to do09:07:26
@shyim:matrix.orgShyimI currently join ssh and just do nixos-rebuild so. tbh: I don't care if it's in nix store. I just don't want to have them on Github publicly accessible as my nix files are public :D 09:08:14
@linus:schreibt.jetztLinux Hackermanboth agenix and sops-nix copy the encrypted secrets to the store as part of the system closure, and they're encrypted to a key that lies on the machine (often the SSH host key) to be decrypted only to a ramfs at runtime09:08:37
@linus:schreibt.jetztLinux Hackermanthen again, having both the encrypted secrets and the unencrypted SSH host key on disk isn't much different from having the unencrypted secrets on disk I guess09:09:27
@linus:schreibt.jetztLinux Hackermanthe next-level thing would be to add a TPM and measured boot into the setup, but I'm nowhere near getting there lol09:10:05
@v:meowy.tech@v:meowy.tech
In reply to @linus:schreibt.jetzt
then again, having both the encrypted secrets and the unencrypted SSH host key on disk isn't much different from having the unencrypted secrets on disk I guess
the various permissions on the file also matter, the nix store is world readable but the ssh host key probably isnt
09:10:16
@linus:schreibt.jetztLinux Hackermanright, but none of these approaches make the unencrypted secrets world-readable09:10:36

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