Env.string
validSrvDomain
+val _ = Env.registerFunction ("dns_master_node",
+ fn [] => SOME (EString Config.masterNode, dl)
+ | _ => NONE)
+
+val _ = Env.registerFunction ("dns_slave_nodes",
+ fn [] => SOME (EList (map (fn n => (EString n, dl)) Config.slaveNodes), dl)
+ | _ => NONE)
+
end