diff --git a/xCAT-server-2.0/lib/xcat/plugins/CONSsn.pm b/xCAT-server-2.0/lib/xcat/plugins/CONSsn.pm
index 753bfc039..d47b996e6 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/CONSsn.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/CONSsn.pm
@@ -40,7 +40,7 @@ sub handled_commands
         my $nodename   = pop @nodeinfo;                    # get hostname
         my @nodeipaddr = @nodeinfo;                        # get ip addresses
 
-        my $service = "cons";
+        my $service = "conserver";
         $rc = xCAT::Utils->isServiceReq($nodename, $service, \@nodeipaddr);
         if ($rc == 1)
         {
diff --git a/xCAT-server-2.0/lib/xcat/plugins/DNSsn.pm b/xCAT-server-2.0/lib/xcat/plugins/DNSsn.pm
index fc53d0a11..69532c9e5 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/DNSsn.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/DNSsn.pm
@@ -35,7 +35,7 @@ sub handled_commands
         my @nodeinfo   = xCAT::Utils->determinehostname;
         my $nodename   = pop @nodeinfo;                    # get hostname
         my @nodeipaddr = @nodeinfo;                        # get ip addresses
-        my $service    = "nameservers";
+        my $service    = "nameserver";
 
         $rc = xCAT::Utils->isServiceReq($nodename, $service, \@nodeipaddr);
         if ($rc == 1)
diff --git a/xCAT-server-2.0/lib/xcat/plugins/NFSsn.pm b/xCAT-server-2.0/lib/xcat/plugins/NFSsn.pm
index 48d907ef6..0a3a5c437 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/NFSsn.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/NFSsn.pm
@@ -40,7 +40,7 @@ sub handled_commands
         my @nodeipaddr = @nodeinfo;                        # get ip addresses
         my $service    = "nfsserver";
         $rc = xCAT::Utils->isServiceReq($nodename, $service, \@nodeipaddr);
-        if ($rc == 1 || $rc == 0)  # for now always mount install
+        if ($rc == 1)   
         {
 
             # service needed on this Service Node
diff --git a/xCAT-server-2.0/lib/xcat/plugins/TFTPsn.pm b/xCAT-server-2.0/lib/xcat/plugins/TFTPsn.pm
index 54affecfa..876e5396f 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/TFTPsn.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/TFTPsn.pm
@@ -39,7 +39,7 @@ sub handled_commands
         my $service    = "tftpserver";
 
         $rc = xCAT::Utils->isServiceReq($nodename, $service, \@nodeipaddr);
-        if ($rc == 1 || $rc == 0)  # for now always mount tftpboot
+        if ($rc == 1)  
         {
 
             $rc = &setup_TFTP();                           # setup TFTP (ATFTP)