diff --git a/roles/cardano-node.nix b/roles/cardano-node.nix
new file mode 100644
index 0000000..196b7af
--- /dev/null
+++ b/roles/cardano-node.nix
@@ -0,0 +1,58 @@
+# NixOps configuration for the hosts running a Cardano node
+
+{ config, pkgs, lib, ... }:
+
+let
+  sources = import ../nix/sources.nix;
+in
+
+{
+
+  imports = [
+    #../secrets/cardano-node.nix
+    (sources.cardano-node)
+  ];
+
+  services = {
+    cardano-node = {
+      enable = true;
+      environment = "ff";
+      hostAddr = "0.0.0.0";
+      topology =  builtins.toFile "topology.json" (builtins.toJSON {
+        Producers = [
+          {
+            addr = "172.105.184.221";
+            port = 3001;
+            valency = 1;
+          }
+        ];
+      });
+      nodeConfig = config.services.cardano-node.environments.alpha1.nodeConfig // {
+        hasPrometheus = [ "127.0.0.1" 12798 ];
+        setupScribes = [{
+          scKind = "JournalSK";
+          scName = "cardano";
+          scFormat = "ScText";
+        }];
+        defaultScribes = [
+          [
+            "JournalSK"
+            "cardano"
+          ]
+        ];
+      };
+      kesKey = "/var/lib/keys/cardano-kes";
+      vrfKey = "/var/lib/keys/cardano-vrf";
+      operationalCertificate = "/var/lib/keys/cardano-opcert";
+    };
+  };
+
+  networking = {
+    firewall = {
+      allowedTCPPorts = [
+        3001   # cardano-node
+      ];
+    };
+  };
+
+}