fix(rescue01): Filter nodes to only include real servers

machines/nixos/rescue01/uptime-kuma.nix

@@ -1,6 +1,7 @@
 {
   config,
   lib,
+  meta,
   nodes,
   sources,
   ...
@@ -8,6 +9,7 @@
 let
   inherit (lib)
     concatLists
+    filterAttrs
     mapAttrsToList
     mkForce
     mkMerge
@@ -20,6 +22,8 @@ let
     probesWithTag
     ;
 
+  serverNodes = filterAttrs (name: _: meta.nodes.${name}.nixpkgs.system == "nixos") nodes;
+
   probesCfg = config.statelessUptimeKuma.probesConfig;
 
   mkMonitors = name: builtins.attrNames (probesWithTag { inherit name; } probesCfg);
@@ -28,16 +32,18 @@ let
 
   port = 3001;
 
-  httpExcludes = [
-    "localhost"
-    "ens.cal.dgnum.eu"
-    "luj-current.cal.dgnum.eu"
-    "s3.dgnum.eu"
-    "cdn.dgnum.eu"
-    "saml-idp.dgnum.eu"
-    "status.dgnum.eu"
-    "radius.dgnum.eu"
-  ] ++ (concatLists (mapAttrsToList (_: { config, ... }: config.dgn-redirections.retired) nodes));
+  httpExcludes =
+    [
+      "localhost"
+      "ens.cal.dgnum.eu"
+      "luj-current.cal.dgnum.eu"
+      "s3.dgnum.eu"
+      "cdn.dgnum.eu"
+      "saml-idp.dgnum.eu"
+      "status.dgnum.eu"
+      "radius.dgnum.eu"
+    ]
+    ++ (concatLists (mapAttrsToList (_: { config, ... }: config.dgn-redirections.retired) serverNodes));
 
   extraProbes = {
     monitors = {
@@ -88,7 +94,7 @@ let
   };
 
   pingProbes = pingProbesFromHive {
-    inherit nodes;
+    nodes = serverNodes;
     mkHost = _: config: config.networking.fqdn;
     tags = [ { name = "Ping"; } ];
     excludes = [
@@ -99,7 +105,7 @@ let
   };
 
   vpnProbes = pingProbesFromHive {
-    inherit nodes;
+    nodes = serverNodes;
     prefix = "VPN - ";
     mkHost = node: _: "${node}.dgnum";
     tags = [ { name = "VPN"; } ];
@@ -110,7 +116,7 @@ let
   };
 
   httpProbes = fromHive {
-    inherit nodes;
+    nodes = serverNodes;
     builder =
       _: module:
       httpProbesFromConfig {