nix-files/doc/adding-a-host.md

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2024-06-11 00:20:15 +00:00
to add a host:
- create the new nix targets
- hosts/by-name/HOST
- let the toplevel (flake.nix) know about HOST
- build and flash an image
- optionally expand the rootfs
- `cfdisk /dev/sda2` -> resize partition
- `mount /dev/sda2 boot`
- `btrfs filesystem resize max root`
- setup required persistent directories
- `mkdir -p root/persist/private`
- `gocryptfs -init root/persist/private`
- then boot the device, and for every dangling symlink in ~/.local/share, ~/.cache, do `mkdir -p` on it
- setup host ssh
- `mkdir -p root/persist/plaintext/etc/ssh/host_keys`
- boot the machine and let it create its own ssh keys
- add the pubkey to `hosts/common/hosts.nix`
- setup user ssh
- `ssh-keygen`. don't enter any password; it's stored in a password-encrypted fs.
- add the pubkey to `hosts/common/hosts.nix`
- allow the new host to view secrets
- instructions in hosts/common/secrets.nix
- run `ssh-to-age` on user/host pubkeys
- add age key to .sops.yaml
- update encrypted secrets: `sops updatekeys path/to/secret.yaml`