diff --git a/domains/fudo.org.nix b/domains/fudo.org.nix
index 86ded17..1b2dee6 100644
--- a/domains/fudo.org.nix
+++ b/domains/fudo.org.nix
@@ -24,9 +24,10 @@
   postgresql-server = "nutboy3";
   log-aggregator = "nutboy3";
   chat-server = "legatus";
-  backplane = {
-    nameserver = "legatus";
-    dns-service = "nutboy3";
-    domain = "fudo.link";
-  };
+  # backplane = {
+  #   nameserver = "legatus";
+  #   dns-service = "nutboy3";
+  #   domain = "fudo.link";
+  # };
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/domains/informis.land.nix b/domains/informis.land.nix
index 1e4d8b4..b141baf 100644
--- a/domains/informis.land.nix
+++ b/domains/informis.land.nix
@@ -21,4 +21,5 @@
     dns-service = "nutboy3";
     domain = "fudo.link";
   };
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/domains/sea.fudo.org.nix b/domains/sea.fudo.org.nix
index 38702c9..b95b1a1 100644
--- a/domains/sea.fudo.org.nix
+++ b/domains/sea.fudo.org.nix
@@ -22,4 +22,5 @@
     dns-service = "nutboy3";
     domain = "fudo.link";
   };
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/entities.nix b/entities.nix
index 78ab754..e9b3c2a 100644
--- a/entities.nix
+++ b/entities.nix
@@ -1,7 +1,6 @@
 { helper-lib, ... }:
 
-let
-  import-by-basename = helper-lib.fs.import-by-basename;
+let import-by-basename = helper-lib.fs.import-by-basename;
 in {
   domains = import-by-basename ./domains;
   hosts = import-by-basename ./hosts;
diff --git a/lib.nix b/lib.nix
index d3a7f5f..70f0d8d 100644
--- a/lib.nix
+++ b/lib.nix
@@ -28,7 +28,11 @@ let
   getHostIps = hostname:
     filter (o: o != null) [ (getHostIpv4 hostname) (getHostIpv6 hostname) ];
 
+  getDomainPostgresqlServer = hostname:
+    let domain-name = entities.hosts."${hostname}".domain;
+    in getHostFqdn entities.domain."${domain-name}".postgresql-server;
+
 in {
   inherit getHostSite getHostDomain getHostRealm getHostFqdn getHostIpv4
-    getHostIpv6 getHostIps;
+    getHostIpv6 getHostIps getDomainPostgresqlServer;
 }
diff --git a/nexus/fudo.link.nix b/nexus/fudo.link.nix
new file mode 100644
index 0000000..4c46957
--- /dev/null
+++ b/nexus/fudo.link.nix
@@ -0,0 +1,5 @@
+{
+  servers = [ "nutboy3" "legatus" ];
+  dns-servers = [ "legatus" ];
+  gssapi-realm = "FUDO.ORG";
+}
diff --git a/sites/joes-datacenter-0.nix b/sites/joes-datacenter-0.nix
index 615f7d0..d27c6ac 100644
--- a/sites/joes-datacenter-0.nix
+++ b/sites/joes-datacenter-0.nix
@@ -8,4 +8,5 @@
     "ssh-rsa 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"
   ];
   mail-server = "mail.informis.land";
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/sites/nuttyclub.nix b/sites/nuttyclub.nix
index 8b6490c..cce87fb 100644
--- a/sites/nuttyclub.nix
+++ b/sites/nuttyclub.nix
@@ -9,4 +9,5 @@
     "ssh-rsa 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"
   ];
   mail-server = "mail.fudo.org";
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/sites/portage.nix b/sites/portage.nix
index 79d2207..a379c69 100644
--- a/sites/portage.nix
+++ b/sites/portage.nix
@@ -9,4 +9,5 @@
     "ssh-rsa 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"
   ];
   mail-server = "mail.fudo.org";
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/sites/seattle.nix b/sites/seattle.nix
index f980154..818bab1 100644
--- a/sites/seattle.nix
+++ b/sites/seattle.nix
@@ -10,4 +10,5 @@
   enable-distributed-builds = false;
   mail-server = "mail.fudo.org";
   local-gateway = "limina";
+  nexus.domains = [ "fudo.link" ];
 }
diff --git a/sites/worldstream.nix b/sites/worldstream.nix
index edeb3d6..8064ef6 100644
--- a/sites/worldstream.nix
+++ b/sites/worldstream.nix
@@ -9,4 +9,5 @@
     "ssh-rsa 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"
   ];
   mail-server = "mail.fudo.org";
+  nexus.domains = [ "fudo.link" ];
 }