hosts: unlock disks remotely on boot

Enable a SSH daemon in initrd, with our keys, so we can unlock remotely
the disk on reboot.

2 files changed, 24 insertions, 3 deletions

diff --git a/hosts/common/system/boot-ssh.nix b/hosts/common/system/boot-ssh.nix
new file mode 100644
index 0000000..2b865d5
--- /dev/null
+++ b/hosts/common/system/boot-ssh.nix
@@ -0,0 +1,21 @@
+{ config, lib, pkgs, ... }:
+
+{
+  boot.initrd = {
+    network = {
+      enable = true;
+      postCommands = ''
+        echo "cryptsetup-askpass; exit" > /root/.profile
+      '';
+      ssh = {
+        enable = true;
+        port = 2222;
+        hostKeys = [
+          /etc/ssh/ssh_host_ed25519_key
+          /etc/ssh/ssh_host_rsa_key
+        ];
+        authorizedKeys = config.users.users.fcuny.openssh.authorizedKeys.keys;
+      };
+    };
+  };
+}
diff --git a/hosts/common/system/users.nix b/hosts/common/system/users.nix
index 2b769c4..25844c2 100644
--- a/hosts/common/system/users.nix
+++ b/hosts/common/system/users.nix
@@ -1,6 +1,6 @@
-{ lib, pkgs, ... }:
+{ config, lib, pkgs, ... }:
 
-rec {
+{
   users.mutableUsers = false;
 
   users.groups.fcuny = { gid = 1000; };
@@ -20,6 +20,6 @@ rec {
 
   users.users.root = {
     hashedPassword = null;
-    openssh.authorizedKeys.keys = users.users.fcuny.openssh.authorizedKeys.keys;
+    openssh.authorizedKeys.keys = config.users.users.fcuny.openssh.authorizedKeys.keys;
   };
 }