.sops.yaml

@@ -63,16 +63,6 @@ creation_rules:
           - *lxc-nix-cache
           - *proxmox-nix-cache
 
-  # Host keytab for nix-cache FreeIPA enrollment (binary sops file).
-  # Generate with: sops -e --input-type binary /tmp/nix-cache.keytab > secrets/nix-cache.keytab
-  - path_regex: secrets/nix-cache\.keytab$
-    key_groups:
-      - age:
-          - *admin
-          - *linode-nix-cache
-          - *lxc-nix-cache
-          - *proxmox-nix-cache
-
   - path_regex: secrets/server\.yaml$
     key_groups:
       - age:
@@ -127,16 +117,6 @@ creation_rules:
   # scripts/secrets/sync-host-keys.sh yet, so whichever variant is actually
   # deployed next needs its recipient added here (and `sops updatekeys` rerun)
   # before it can decrypt this.
-  # Host keytab for tailscale-router FreeIPA enrollment (binary sops file).
-  # Generated by scripts/ipa/create-nixos-ipa-host-account.sh.
-  - path_regex: secrets/tailscale-router\.keytab$
-    key_groups:
-      - age:
-          - *admin
-          - *lxc-tailscale-router
-          - *proxmox-tailscale-router
-          - *linode-tailscale-router
-
   - path_regex: secrets/gui\.yaml$
     key_groups:
       - age:
@@ -146,19 +126,72 @@ creation_rules:
           - *linode-gui
           - *proxmox-gui
 
-  # Host keytab for tailscale-router FreeIPA enrollment (binary sops file).
+  # IPA host keytabs (binary sops files).
-  # Generated by scripts/ipa/create-nixos-ipa-host-account.sh.
+  # Each keytab is encrypted for all platform variants of that host so any
+  # deployed variant can decrypt it at boot. Run
+  # scripts/ipa/create-nixos-ipa-host-account.sh <hostname> to enroll a new
+  # host and produce the keytab; this section is updated by that script.
+
+  - path_regex: secrets/nix-cache\.keytab$
+    key_groups:
+      - age:
+          - *admin
+          - *linode-nix-cache
+          - *lxc-nix-cache
+          - *proxmox-nix-cache
+
   - path_regex: secrets/tailscale-router\.keytab$
     key_groups:
       - age:
           - *admin
+          - *linode-tailscale-router
           - *lxc-tailscale-router
           - *proxmox-tailscale-router
-          - *linode-tailscale-router
 
-  # Host keytab for nixos.sweet.home FreeIPA enrollment (binary sops file).
+  - path_regex: secrets/pxe-boot\.keytab$
-  # Generated by scripts/ipa/create-nixos-ipa-host-account.sh.
-  - path_regex: secrets/nixos.sweet.home\.keytab$
     key_groups:
       - age:
           - *admin
+          - *lxc-pxe-boot
+          - *proxmox-pxe-boot
+
+  # nixos = the workstation (hosts/nixos/host.nix). All gui platform variants
+  # share the hostname "nixos" and must be able to decrypt at boot.
+  - path_regex: secrets/nixos\.keytab$
+    key_groups:
+      - age:
+          - *admin
+          - *baremetal-gui
+          - *lxc-gui
+          - *proxmox-gui
+          - *linode-gui
+
+  - path_regex: secrets/server\.keytab$
+    key_groups:
+      - age:
+          - *admin
+          - *linode-server
+          - *lxc-server
+          - *proxmox-server
+
+  - path_regex: secrets/docker\.keytab$
+    key_groups:
+      - age:
+          - *admin
+          - *linode-docker
+          - *lxc-docker
+          - *proxmox-docker
+
+  - path_regex: secrets/tor-relay\.keytab$
+    key_groups:
+      - age:
+          - *admin
+          - *lxc-tor-relay
+
+  - path_regex: secrets/nix-minimal\.keytab$
+    key_groups:
+      - age:
+          - *admin
+          - *lxc-minimal
+          - *proxmox-minimal
+          - *linode-minimal

hosts/nix-cache/host.nix

@@ -6,15 +6,10 @@
       name = "nix-cache";
       sopsFile = ../../secrets/nix-cache.yaml;
     })
-    (import ../../modules/ipa/client.nix {
-      keytabSopsFile = ../../secrets/nix-cache.keytab;
-      caCertFile = ../../certs/ipa-ca.crt;
-    })
   ];
 
   networking = {
     hostName = vars.nixCacheHost;
-    domain = vars.homeDomain;
     useDHCP = false;
     interfaces.${vars.lxcLanInterface}.ipv4.addresses = [{
       address = vars.nixCacheIp;

hosts/tailscale-router/host.nix

@@ -6,15 +6,10 @@
       name = "tailscale-router";
       sopsFile = ../../secrets/tailscale-router.yaml;
     })
-    (import ../../modules/ipa/client.nix {
-      keytabSopsFile = ../../secrets/tailscale-router.keytab;
-      caCertFile = ../../certs/ipa-ca.crt;
-    })
   ];
 
   networking = {
     hostName = "tailscale-router";
-    domain = vars.homeDomain;
     useDHCP = false;
     interfaces.${vars.lxcLanInterface}.ipv4.addresses = [{
       address = vars.tailscaleRouterIp;

modules/common/configuration.nix

@@ -6,6 +6,7 @@
       # Include the results of the hardware scan.
       #      ./hardware-configuration.nix
       ./set-locale.nix
+      ../ipa/client.nix
     ];
   # Use the GRUB 2 boot loader.
   # boot.loader.grub.enable = true;

modules/ipa/client.nix

@@ -1,34 +1,15 @@
 # Fully declarative FreeIPA domain membership.
 #
-# Configures security.ipa (SSSD, Kerberos, PAM, NSSwitch) and places a
+# Imported by modules/common/configuration.nix — no per-host wiring needed.
-# pre-provisioned host keytab via sops-nix so no imperative ipa-client-install
+# Enables itself automatically on any host that has a sops-encrypted keytab
-# step is needed after deployment.
+# at secrets/<hostname>.keytab; is a no-op for all other hosts.
 #
-# Usage (in a host.nix imports list):
+# To enroll a new host:
-#   (import ../../modules/ipa/client.nix {
+#   0. scripts/secrets/sync-host-keys.sh <flake-target>
-#     keytabSopsFile = ../../secrets/<hostname>.keytab;
+#   1. scripts/ipa/create-nixos-ipa-host-account.sh [--ip <addr>] <hostname>
-#     caCertFile     = ../../certs/ipa-ca.crt;  # already committed — do not re-fetch
+#      (adds .sops.yaml rule, runs ipa host-add, encrypts keytab in one step)
-#   })
+#   2. git add secrets/<hostname>.keytab .sops.yaml && git commit
-#
+#   3. Deploy — no further steps required.
-# The host.nix networking block must also set:
-#   networking.domain   = vars.homeDomain;         # needed for Kerberos FQDN
-#   networking.nameservers = [ vars.domainControllerIp ];  # IPA DNS
-#
-# One-time operator setup per host (do this BEFORE deploying):
-#
-#   0. Generate SSH host keys and the host's age key for sops:
-#        scripts/secrets/sync-host-keys.sh <flake-target>
-#      This must run before step 1 so the host age key is in .sops.yaml
-#      and the keytab can be encrypted for the host to read at boot.
-#
-#   1. Add the IPA host account and produce the sops-encrypted keytab:
-#        scripts/ipa/create-nixos-ipa-host-account.sh [--ip <addr>] <hostname>
-#      The script handles ipa host-add, ipa-getkeytab, .sops.yaml patching,
-#      and sops encryption in one step. See the script header for details.
-#
-#   2. Wire up the host (see "Usage" above), then deploy:
-#        nixos-rebuild switch  (or create-proxmox-resource.sh)
-#      No further manual enrollment steps are required after deployment.
 #
 # Manual fallback (if the script isn't usable):
 #   a. On the FreeIPA server: ipa host-add <fqdn> [--ip-address=<ip>] --force
@@ -40,18 +21,23 @@
 #
 # vars dependencies: homeDomain, ipaServer, domainControllerIp
 
-{ keytabSopsFile, caCertFile }:
 { config, lib, pkgs, vars, ... }:
 
 let
+  keytabPath = ../../secrets + "/${config.networking.hostName}.keytab";
+  enabled = builtins.pathExists keytabPath;
+
   realm = lib.strings.toUpper vars.homeDomain;
   fqdn = "${config.networking.hostName}.${vars.homeDomain}";
   # "sweet.home" -> "dc=sweet,dc=home"
   basedn = lib.strings.concatMapStringsSep "," (c: "dc=${c}") (lib.strings.splitString "." vars.homeDomain);
   # security.ipa.certificate expects a derivation (package), not a raw path.
-  caCertPkg = pkgs.writeText "ipa-ca.crt" (builtins.readFile caCertFile);
+  caCertPkg = pkgs.writeText "ipa-ca.crt" (builtins.readFile ../../certs/ipa-ca.crt);
 in
-{
+lib.mkIf enabled {
+  networking.domain = lib.mkDefault vars.homeDomain;
+  networking.nameservers = lib.mkDefault [ vars.domainControllerIp ];
+
   security.ipa = {
     enable = true;
     domain = vars.homeDomain;
@@ -92,7 +78,7 @@ in
   # Placed at /etc/krb5.keytab before SSSD starts so the host authenticates
   # to IPA without running ipa-client-install.
   sops.secrets."ipa-host-keytab" = {
-    sopsFile = keytabSopsFile;
+    sopsFile = keytabPath;
     format = "binary";
     path = "/etc/krb5.keytab";
     owner = "root";

secrets/nixos.sweet.home.keytab

@@ -1,14 +0,0 @@
-{
-	"data": "ENC[AES256_GCM,data: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,iv:UnpS8KFuNVtdYa/eCMWtQlm9awwNDgMU3Cy5x7Vfycc=,tag:NlGOfcg59NdwXJJesTZ1/w==,type:str]",
-	"sops": {
-		"age": [
-			{
-				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSB3ZEdXUEF4WWhPTGFFcWkr\nV3ZsVjl2SWQ0V3VjeHdjVmJ5ZnRGcExPN0ZzCjBZbTNVYWlqd0NnRHZmSUpObC9s\nUUhJQkp1em9YeGxGaHN3ZjE5eWFPSEEKLS0tIDdOSWU3b1pRSzBxMDhIWjJ4SDRO\nRVA5S3FVSFZGRm5XejdlQytCL2k3NmcKFeQ/nRcuEiFwgJEDj8z0KMeyEcFGbG35\nBcuM5cUh5qLArOQlONThmOt/Jepfo2dMPblQ6kd0zSqWfLNqZDg3Hw==\n-----END AGE ENCRYPTED FILE-----\n",
-				"recipient": "age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad"
-			}
-		],
-		"lastmodified": "2026-07-28T00:42:31Z",
-		"mac": "ENC[AES256_GCM,data:IiLoY24bVjvbsA3bd9a6/OEw0PDkHm1Uc3OiHG2FlOxAoPhb6zvE5t2tpZyqeT2goIYv+mr4C/y8BYSsVcZr1FtgqwYx7Y5eiAq9uVzFQ838TDN5ndgkKYrbyPwHSKCHCrOPZ/jDiQTSSO/dv1R8cQHfBf8kX5GEt6ovtGvI2AY=,iv:PctMMNSv0iPZYATsACcQ0aqgFME7xGGCD915k/RiuEI=,tag:Pxaet5zPXIYicExNRFyzGA==,type:str]",
-		"version": "3.13.2"
-	}
-}

secrets/pxe-boot.keytab

@@ -0,0 +1,22 @@
+{
+	"data": "ENC[AES256_GCM,data:Q++XWxg9tvY7ugT8+8FWCC5jgOfQ1+LYLsnqN0/WGxTf5XT2VmoXvszcE/ow2BUOBG3qBTXS3OHYFPwmj1GgaBHB8rpdXX6+LveSBE2gmx1VR+NUDTxy+0/DBq411MK9n/J9eIYcybdFIE11biFSAob9EgfxBF5roCDXIPDPyVCSe6LyhNvqYPnGQsfHCbejSewLTcRQEiguP9BX96CpMPIpmaB9fHN25t5RWCgMI7MtacrRxRsyKg44+2FZstXdZrp2Wv9u86BxqdAFqtZE8qpPeGdrdzluZx9jhnw0wZPzHdKg5wS7/UrLCb0UxIQiDxDMDuuBuLGkKXfAhb6SGZU41wWAWYk548iGRUaG+79BO4HhRZNObOFvfsjpMXEfcH/Vbv/wHVY4OpJUPe/ZWK4wpL9YrY4nT0t62HH7MirOy1uhwLE50h2+6dHKj6ur5G7thkSqgzVWXQ==,iv:zaRBwS+gfXLhH30havn6Q2+oPWuLV3qBfbOj00kewlQ=,tag:Vr5iEQ2u+9YNahryhgzwSw==,type:str]",
+	"sops": {
+		"age": [
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSArTGJnaVhleUtsWnlITE1s\nNmRCaW1QWTFNSG5LRFdmb1lzRlV5NWl3YTBNCmF6eUN6RkJBZzc0MmJJa0dKTW01\ncVh4K1VLR2lURUpKQXpxNGpQNnpSUlUKLS0tIFJONnJFWkNCR3pqalRsUW9POVBj\nQ0pFQ3ltKzBETTVXTW5sV1ppWTFJc1kKzxUboNZO+Nwn2eTWy11VP9w1pRswCHaJ\nE2dYU0oUOClVzc0oSuIJxraG6TPj1N4WGC24gS+UmpkmSuCiOeZBsw==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1njap586hc0q43kr03g6c8eqhdsmk8zcafkl3f83xwlc2gqhlmfgs4tmwad"
+			},
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBDSmxNR1I3dUFKT0xUVG9h\nWkRIakNVeWRQOEN3blNRVjZlWHF4K2NRa0hBClRiOXlmTTJ4T2JTUEw2c1l0R2N2\nMnRwdDA5bEZlQWJRTm9vUmNKclBSU1EKLS0tIFcyeDFjbTZyVEVDUjN1VzU1VHly\nNWNDMW9rTXY2bHNWYVR0SmtMckovUzQKhTWr6yFVW9am3okCiIswwqR5+/p9OLmB\nWCgPtwoFaBt1RjUXPK4/eS4LlucR2K6V/mNMn4xVsnkIl193U9632g==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age16j42pdc5dr6wnj7xayhkqdj2rny9u68fcqejs50hqq42scssh4gsnrrnlt"
+			},
+			{
+				"enc": "-----BEGIN AGE ENCRYPTED FILE-----\nYWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA2ME9CbmVGcENRWksyL0pW\nOEJyUGhpbGMwWlBhVXBSeXQ2MW1EWnFuR0E4CnMwU0pjdk1YMzF5ZEhTVFlBaHZq\nam94UWVGbjhZSEx6VHBmem9JRWgwYzAKLS0tIHFJZWRyRjRHNzhXdDJSYWN3bDlR\nYVp3eGJWWkh3Y09ZWElyclZQN1ZSVFkKjR32//EcFAdMjVlNgky5zvVkwXwEN68D\nrkTuHKjiO5aV7yAQGPkdNw0UM0oRGF0u4YF3oOUcZfSvnKgDeoi2Zw==\n-----END AGE ENCRYPTED FILE-----\n",
+				"recipient": "age1ug787sgt6st6k82fgkrug2lzltw4qsukrrqqs3w27ewwqj8rg4hsxcmylz"
+			}
+		],
+		"lastmodified": "2026-07-28T00:27:46Z",
+		"mac": "ENC[AES256_GCM,data:AbJIHYcFpeanQsJ3x7RPL9Yjlg5BJgkepKax0fL9L/PpA03Antab93iUNG95Mp6k/duovp8Jm445lbuppDZq1dh9ij/deBa8GbzJ50wwEe9zMc3EwRKScpqZEhRPF7KlJsIjsHJyd8NkcI5ji49XkHb4Ae1//8zG5HpVgy+3b04=,iv:uxQCbMwMIfP5S1dbsvIx3F79YWEguxwox8T0YZvUBdc=,tag:3utjmBGDmPc8q4JjaXvCkA==,type:str]",
+		"version": "3.13.2"
+	}
+}