diff --git a/system/options.nix b/system/options.nix
index 1d5e333eee9..4bef45be83f 100644
--- a/system/options.nix
+++ b/system/options.nix
@@ -2320,37 +2320,8 @@ in
         ";
       };
     };
-
-
-    zabbixAgent = {
-
-      enable = mkOption {
-        default = false;
-        description = "
-          Whether to run the Zabbix monitoring agent on this machine.
-          It will send monitoring data to a Zabbix server.
-        ";
-      };
-
-      server = mkOption {
-        default = "127.0.0.1";
-        description = ''
-          The IP address or hostname of the Zabbix server to connect to.
-        '';
-      };
-
-    };
     
 
-    zabbixServer = {
-      enable = mkOption {
-        default = false;
-        description = "
-          Whether to run the Zabbix server on this machine.
-        ";
-      };
-    };
-   
     postfix = {
       enable = mkOption {
         default = false;
@@ -3111,6 +3082,8 @@ root        ALL=(ALL) SETENV: ALL
     (import ../upstart-jobs/pcmcia.nix)
 
     # services
+    (import ../upstart-jobs/zabbix-agent.nix)
+    (import ../upstart-jobs/zabbix-server.nix.nix)
     (import ../upstart-jobs/disnix.nix)
     (import ../upstart-jobs/cron.nix)
     (import ../upstart-jobs/cron/locate.nix)
diff --git a/upstart-jobs/default.nix b/upstart-jobs/default.nix
index 50f937e9ffa..a8c422e2427 100644
--- a/upstart-jobs/default.nix
+++ b/upstart-jobs/default.nix
@@ -418,18 +418,6 @@ let
       inherit config pkgs;
     })
 
-  # Zabbix agent daemon.
-  ++ optional config.services.zabbixAgent.enable
-    (import ../upstart-jobs/zabbix-agent.nix {
-      inherit config pkgs;
-    })
-
-  # Zabbix server daemon.
-  ++ optional config.services.zabbixServer.enable
-    (import ../upstart-jobs/zabbix-server.nix {
-      inherit config pkgs;
-    })
-  
   # Postfix mail server.
   ++ optional config.services.postfix.enable
     (import ../upstart-jobs/postfix.nix {
diff --git a/upstart-jobs/zabbix-agent.nix b/upstart-jobs/zabbix-agent.nix
index 8d57c6fbd50..cb3895f81f1 100644
--- a/upstart-jobs/zabbix-agent.nix
+++ b/upstart-jobs/zabbix-agent.nix
@@ -1,5 +1,35 @@
+# Zabbix agent daemon.
 {config, pkgs}:
 
+###### interface
+let
+  inherit (pkgs.lib) mkOption;
+
+  options = {
+    services = {
+      zabbixAgent = {
+
+        enable = mkOption {
+          default = false;
+          description = "
+            Whether to run the Zabbix monitoring agent on this machine.
+            It will send monitoring data to a Zabbix server.
+          ";
+        };
+
+        server = mkOption {
+          default = "127.0.0.1";
+          description = ''
+            The IP address or hostname of the Zabbix server to connect to.
+          '';
+        };
+
+      };
+    };
+  };
+in
+
+###### implementation
 let
 
   cfg = config.services.zabbixAgent;
@@ -20,44 +50,59 @@ let
     StartAgents = 5
   '';
 
+  user = {
+    name = "zabbix";
+    uid = (import ../system/ids.nix).uids.zabbix;
+    description = "Zabbix daemon user";
+  };
+
+  job = {
+    name = "zabbix-agent";
+    
+    job = ''
+      start on network-interfaces/started
+      stop on network-interfaces/stop
+
+      description "Zabbix agent daemon"
+
+      start script
+        mkdir -m 0755 -p ${stateDir} ${logDir}
+        chown zabbix ${stateDir} ${logDir}
+        
+        export PATH=${pkgs.nettools}/bin:$PATH
+        ${pkgs.zabbixAgent}/sbin/zabbix_agentd --config ${configFile}
+      end script
+
+      respawn sleep 100000
+      
+      stop script
+        # !!! this seems to leave processes behind.
+        #pid=$(cat ${pidFile})
+        #if test -n "$pid"; then
+        #  kill $pid 
+        #fi
+
+        # So instead kill the agent in a brutal fashion.
+        while ${pkgs.procps}/bin/pkill -u zabbix zabbix_agentd; do true; done
+      end script
+    '';
+  };
+
+  ifEnable = pkgs.lib.ifEnable cfg.enable;
 in
 
 {
-  name = "zabbix-agent";
-  
-  users = [
-    { name = "zabbix";
-      uid = (import ../system/ids.nix).uids.zabbix;
-      description = "Zabbix daemon user";
-    }
+  require = [
+    (import ../upstart-jobs/default.nix)
+    # (import ../system/user.nix) # users = { .. }
+    options
   ];
 
-  job = ''
-    start on network-interfaces/started
-    stop on network-interfaces/stop
+  services = {
+    extraJobs = ifEnable [job];
+  };
 
-    description "Zabbix agent daemon"
-
-    start script
-      mkdir -m 0755 -p ${stateDir} ${logDir}
-      chown zabbix ${stateDir} ${logDir}
-      
-      export PATH=${pkgs.nettools}/bin:$PATH
-      ${pkgs.zabbixAgent}/sbin/zabbix_agentd --config ${configFile}
-    end script
-
-    respawn sleep 100000
-    
-    stop script
-      # !!! this seems to leave processes behind.
-      #pid=$(cat ${pidFile})
-      #if test -n "$pid"; then
-      #  kill $pid 
-      #fi
-
-      # So instead kill the agent in a brutal fashion.
-      while ${pkgs.procps}/bin/pkill -u zabbix zabbix_agentd; do true; done
-    end script
-  '';
-  
+  users = {
+    extraUsers = ifEnable [user];
+  };
 }
diff --git a/upstart-jobs/zabbix-server.nix b/upstart-jobs/zabbix-server.nix
index a2095269590..5684413ba2e 100644
--- a/upstart-jobs/zabbix-server.nix
+++ b/upstart-jobs/zabbix-server.nix
@@ -1,5 +1,25 @@
+# Zabbix server daemon.
 {config, pkgs}:
 
+###### interface
+let
+  inherit (pkgs.lib) mkOption;
+
+  options = {
+    services = {
+      zabbixServer = {
+        enable = mkOption {
+          default = false;
+          description = "
+            Whether to run the Zabbix server on this machine.
+          ";
+        };
+      };
+    };
+  };
+in
+
+###### implementation
 let
 
   stateDir = "/var/run/zabbix";
@@ -20,46 +40,62 @@ let
     DBUser = zabbix
   '';
 
+  user = {
+    name = "zabbix";
+    uid = (import ../system/ids.nix).uids.zabbix;
+    description = "Zabbix daemon user";
+  };
+
+  job = {
+    name = "zabbix-server";
+
+    job = ''
+      description "Zabbix server daemon"
+
+      start on postgresql/started
+      stop on shutdown
+
+      start script
+        mkdir -m 0755 -p ${stateDir} ${logDir} ${libDir}
+        chown zabbix ${stateDir} ${logDir} ${libDir}
+
+        if ! test -e "${libDir}/db-created"; then
+            ${pkgs.postgresql}/bin/createuser --no-superuser --no-createdb --no-createrole zabbix || true
+            ${pkgs.postgresql}/bin/createdb --owner zabbix zabbix || true
+            cat ${pkgs.zabbixServer}/share/zabbix/db/schema/postgresql.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c 'psql zabbix'
+            cat ${pkgs.zabbixServer}/share/zabbix/db/data/data.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c 'psql zabbix'
+            cat ${pkgs.zabbixServer}/share/zabbix/db/data/images_pgsql.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c 'psql zabbix'
+            touch "${libDir}/db-created"
+        fi
+        
+        export PATH=${pkgs.nettools}/bin:$PATH
+        ${pkgs.zabbixServer}/sbin/zabbix_server --config ${configFile}
+      end script
+
+      respawn sleep 100000
+      
+      stop script
+        while ${pkgs.procps}/bin/pkill -u zabbix zabbix_server; do true; done
+      end script
+    '';
+    
+  };
+
+  ifEnable = pkgs.lib.ifEnable config.services.zabbixServer.enable
 in
 
 {
-  name = "zabbix-server";
-  
-  users = [
-    { name = "zabbix";
-      uid = (import ../system/ids.nix).uids.zabbix;
-      description = "Zabbix daemon user";
-    }
+  require = [
+    (import ../upstart-jobs/default.nix)
+    # (import ../system/user.nix) # users = { .. }
+    options
   ];
 
-  job = ''
-    description "Zabbix server daemon"
+  services = {
+    extraJobs = ifEnable [job];
+  };
 
-    start on postgresql/started
-    stop on shutdown
-
-    start script
-      mkdir -m 0755 -p ${stateDir} ${logDir} ${libDir}
-      chown zabbix ${stateDir} ${logDir} ${libDir}
-
-      if ! test -e "${libDir}/db-created"; then
-          ${pkgs.postgresql}/bin/createuser --no-superuser --no-createdb --no-createrole zabbix || true
-          ${pkgs.postgresql}/bin/createdb --owner zabbix zabbix || true
-          cat ${pkgs.zabbixServer}/share/zabbix/db/schema/postgresql.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c 'psql zabbix'
-          cat ${pkgs.zabbixServer}/share/zabbix/db/data/data.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c 'psql zabbix'
-          cat ${pkgs.zabbixServer}/share/zabbix/db/data/images_pgsql.sql | ${pkgs.su}/bin/su -s "$SHELL" zabbix -c 'psql zabbix'
-          touch "${libDir}/db-created"
-      fi
-      
-      export PATH=${pkgs.nettools}/bin:$PATH
-      ${pkgs.zabbixServer}/sbin/zabbix_server --config ${configFile}
-    end script
-
-    respawn sleep 100000
-    
-    stop script
-      while ${pkgs.procps}/bin/pkill -u zabbix zabbix_server; do true; done
-    end script
-  '';
-  
+  users = {
+    extraUsers = ifEnable [user];
+  };
 }