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doc: explain better where SSH host keys come from in tutorial

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fixes #17
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Ryan Mulligan 2021-05-12 20:37:06 -07:00
parent 20a5c3d256
commit e543aa7d68
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14
README.md
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@ -130,14 +130,18 @@ but, if you want to (change the system based on your system):
## Tutorial
1. Make a directory to store secrets and `secrets.nix` file for listing secrets and their public keys:
1. The system you want to deploy secrets to should already exist and
have `sshd` running on it so that it has generated SSH host keys in
`/etc/ssh/`.
2. Make a directory to store secrets and `secrets.nix` file for listing secrets and their public keys:
```ShellSession
$ mkdir secrets
$ cd secrets
$ touch secrets.nix
```
2. Add public keys to `secrets.nix` file (hint: use `ssh-keyscan` or GitHub (for example, https://github.com/ryantm.keys)):
3. Add public keys to `secrets.nix` file (hint: use `ssh-keyscan` or GitHub (for example, https://github.com/ryantm.keys)):
```nix
let
user1 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL0idNvgGiucWgup/mP78zyC23uFjYq0evcWdjGQUaBH";
@ -153,15 +157,15 @@ but, if you want to (change the system based on your system):
"secret2.age".publicKeys = users ++ systems;
}
```
3. Edit secret files (these instructions assume your SSH private key is in ~/.ssh/):
4. Edit secret files (these instructions assume your SSH private key is in ~/.ssh/):
```ShellSession
$ agenix -e secret1.age
```
4. Add secret to a NixOS module config:
5. Add secret to a NixOS module config:
```nix
age.secrets.secret1.file = ../secrets/secret1.age;
```
5. NixOS rebuild or use your deployment tool like usual.
6. NixOS rebuild or use your deployment tool like usual.
The secret will be decrypted to the value of `age.secrets.secret1.path` (`/run/secrets/secret1` by default). For per-secret options controlling ownership etc, see [modules/age.nix](modules/age.nix).