diff --git a/machines/ramus/think-greater-chiangmai.nix b/machines/ramus/think-greater-chiangmai.nix
index 9b3e24c..1c5814d 100644
--- a/machines/ramus/think-greater-chiangmai.nix
+++ b/machines/ramus/think-greater-chiangmai.nix
@@ -1,8 +1,33 @@
 { self, ... }:
+let
+  commonSettings = {
+    DB_CONNECTION = "mysql";
+    DB_HOST = "localhost";
+    DB_PORT = 3306;
+    DB_DATABASE = "thinkgtcm";
+    DB_USERNAME = "gtcm";
+  };
+in
 {
   imports = [
     self.nixosModules.think-gtcm
     self.nixosModules.think-backend-gtcm
   ];
   nixpkgs.overlays = [ self.overlays.packagesOverlay ];
+
+  services.think-greaterchiangmai = {
+    enable = true;
+    domain = "think.greaterchiangmai.com";
+    settings = {
+
+    }
+    // commonSettings;
+  };
+  services.think-backend-greaterchiangmai = {
+    enable = true;
+    domain = "think-backend.greaterchiangmai.com";
+    settings = {
+    }
+    // commonSettings;
+  };
 }
diff --git a/modules/nixos/think-gtcm.nix b/modules/nixos/think-gtcm.nix
index 0aa7fd1..4db90ce 100644
--- a/modules/nixos/think-gtcm.nix
+++ b/modules/nixos/think-gtcm.nix
@@ -62,13 +62,6 @@ in
       description = "Domain to serve on.";
     };
 
-    backendDomain = lib.mkOption {
-      type = lib.types.str;
-      default = "think-backend.greaterchiangmai.com";
-      example = "forum.example.com";
-      description = "Backend Domain to serve on.";
-    };
-
     settings = lib.mkOption {
       type =
         with lib.types;