diff --git a/nix/lib/config/legacy.nix b/nix/lib/config/legacy.nix
index 13f1c72..426c306 100644
--- a/nix/lib/config/legacy.nix
+++ b/nix/lib/config/legacy.nix
@@ -67,6 +67,12 @@ in
       core.ospf.secret = pillar.ospf.secret;
       pub.dynamicDomain = true;
 
+      cluster.extraRecords = map (host: {
+        name = "_ceph-mon._tcp";
+        type = "SRV";
+        data = "1 1 6789 ${host}";
+      }) [ "server6" "server7" "server8" ];
+
       c3d2.dynamicDomain = true;
       c3d2.dhcp = {
         server = "c3d2-gw3";