diff --git a/perl-xCAT/xCAT/Schema.pm b/perl-xCAT/xCAT/Schema.pm
index 3a46009fe..b4a1ed04e 100755
--- a/perl-xCAT/xCAT/Schema.pm
+++ b/perl-xCAT/xCAT/Schema.pm
@@ -1118,6 +1118,8 @@ site => {
    "               'all' means that the management as well as the service nodes\n".
    "               are all using a common shared filesystem. The default is 'no'.\n".
    " xcatconfdir:  Where xCAT config data is (default /etc/xcat).\n\n".
+   " xcatdebugmode:  the value of xcat debug mode. Currently supported values: \n".
+   "                 0: off(default); 1: on \n\n".
    " --------------------\n".
    "REMOTESHELL ATTRIBUTES\n".
    " --------------------\n".
diff --git a/xCAT-server/lib/perl/xCAT/Template.pm b/xCAT-server/lib/perl/xCAT/Template.pm
index fff570b7e..3e799006e 100644
--- a/xCAT-server/lib/perl/xCAT/Template.pm
+++ b/xCAT-server/lib/perl/xCAT/Template.pm
@@ -336,7 +336,11 @@ sub subvars {
       $inc =~ s/#SHORTNAME#/$shortname/g;
       $inc =~ s/#GETNODEDOMAIN:([^#]+)#/get_node_domain($1)/eg;
       $inc =~ s/#GETPRINICMAC:([^#]+)#/xCAT::Utils::parseMacTabEntry(tabdb("mac",$1,"mac"),$1)/eg;
-    
+   
+      if($::XCATSITEVALS{xcatdebugmode} eq "1"){
+           $inc =~ s/#UNCOMMENONXCATDEBUGMODE#/ /g;
+      }
+ 
       my $nrtab = xCAT::Table->new("noderes");
       my $tftpserver = $nrtab->getNodeAttribs($node, ['tftpserver']);
       my $sles_sdk_media = "http://" . $tftpserver->{tftpserver} . $media_dir . "/sdk1";
diff --git a/xCAT-server/lib/xcat/plugins/anaconda.pm b/xCAT-server/lib/xcat/plugins/anaconda.pm
index 2a2e43f7b..e5ac5122c 100755
--- a/xCAT-server/lib/xcat/plugins/anaconda.pm
+++ b/xCAT-server/lib/xcat/plugins/anaconda.pm
@@ -1479,7 +1479,32 @@ sub mkinstall
                     $kcmdline .= " $net_params->{ip} ";
                 }
            }
+              
+           if($::XCATSITEVALS{xcatdebugmode} eq "1"){
 
+                 unless($instserver eq '!myipfn!'){
+                    my($host,$ip)=xCAT::NetworkUtils->gethostnameandip($instserver);
+                    $instserver=$ip;
+                 } 
+ 
+                 if (xCAT::Utils->version_cmp($kversion,"7.0") >= 0){
+                    #enable ssh access during installation
+                    $kcmdline .= " inst.sshd";  
+                           
+                    #set minimum level of messages to be logged on the console
+                    #to be "debug"
+                    $kcmdline .=" inst.loglevel=debug";
+
+                    #all the logs during installation will be forwarded to xcatmster
+                    $kcmdline .=" inst.syslog=$instserver";
+                 }else{
+                    $kcmdline .= " sshd=1";
+                    $kcmdline .=" syslog=$instserver";
+                 }
+                     
+           }
+            
+           
             #TODO: dd=<url> for driver disks
             if (defined($sent->{serialport}))
             {
diff --git a/xCAT-server/lib/xcat/plugins/sles.pm b/xCAT-server/lib/xcat/plugins/sles.pm
index 84f586189..ec35796c6 100755
--- a/xCAT-server/lib/xcat/plugins/sles.pm
+++ b/xCAT-server/lib/xcat/plugins/sles.pm
@@ -1196,7 +1196,18 @@ sub mkinstall
            }            
 
            
+            if($::XCATSITEVALS{xcatdebugmode} eq "1"){
 
+               unless($netserver eq '!myipfn!'){
+                  my($host,$ip)=xCAT::NetworkUtils->gethostnameandip($netserver);
+                  $netserver=$ip;
+               }
+              
+              #enable ssh access during installation,the password is set to "cluster"
+              $kcmdline .=" UseSSH=1 SSHPassword=cluster";
+ 
+              $kcmdline .=" Loghost=$netserver";
+            }
  
 
             if (defined $sent->{serialport})
diff --git a/xCAT-server/share/xcat/install/scripts/pre.rh b/xCAT-server/share/xcat/install/scripts/pre.rh
index dac9f1fbe..95363f798 100644
--- a/xCAT-server/share/xcat/install/scripts/pre.rh
+++ b/xCAT-server/share/xcat/install/scripts/pre.rh
@@ -138,13 +138,13 @@ try:
 					line = "installing prep"
 				newSocket.send(line)
 				break
-#			if(command[0] == "sh"): #DEBUG purposes only, wide open root priv command here.
-#				newcommand = ""
-#				for i in command[1:]:
-#					newcommand = newcommand + i + " "
-#				output = os.popen(newcommand).read()
-#				newSocket.send(output)
-#				break
+#UNCOMMENONXCATDEBUGMODE#			if(command[0] == "sh"): #DEBUG purposes only, wide open root priv command here.
+#UNCOMMENONXCATDEBUGMODE#				newcommand = ""
+#UNCOMMENONXCATDEBUGMODE#				for i in command[1:]:
+#UNCOMMENONXCATDEBUGMODE#					newcommand = newcommand + i + " "
+#UNCOMMENONXCATDEBUGMODE#				output = os.popen(newcommand).read()
+#UNCOMMENONXCATDEBUGMODE#				newSocket.send(output)
+#UNCOMMENONXCATDEBUGMODE#				break
 			if(command[0] == "screendump"):
 				newcommand = "cat /dev/vcs"
 				for i in command[1:]:
diff --git a/xCAT-server/share/xcat/install/scripts/pre.rh.rhels7 b/xCAT-server/share/xcat/install/scripts/pre.rh.rhels7
index b373a9164..94fec22d9 100755
--- a/xCAT-server/share/xcat/install/scripts/pre.rh.rhels7
+++ b/xCAT-server/share/xcat/install/scripts/pre.rh.rhels7
@@ -102,13 +102,13 @@ try:
 					line = "installing prep"
 				newSocket.send(line)
 				break
-#			if(command[0] == "sh"): #DEBUG purposes only, wide open root priv command here.
-#				newcommand = ""
-#				for i in command[1:]:
-#					newcommand = newcommand + i + " "
-#				output = os.popen(newcommand).read()
-#				newSocket.send(output)
-#				break
+#UNCOMMENONXCATDEBUGMODE#			if(command[0] == "sh"): #DEBUG purposes only, wide open root priv command here.
+#UNCOMMENONXCATDEBUGMODE#				newcommand = ""
+#UNCOMMENONXCATDEBUGMODE#				for i in command[1:]:
+#UNCOMMENONXCATDEBUGMODE#					newcommand = newcommand + i + " "
+#UNCOMMENONXCATDEBUGMODE#				output = os.popen(newcommand).read()
+#UNCOMMENONXCATDEBUGMODE#				newSocket.send(output)
+#UNCOMMENONXCATDEBUGMODE#				break
 			if(command[0] == "screendump"):
 				newcommand = "cat /dev/vcs"
 				for i in command[1:]:
diff --git a/xCAT-server/share/xcat/install/scripts/pre.sles b/xCAT-server/share/xcat/install/scripts/pre.sles
index 82337a568..d54fa2387 100644
--- a/xCAT-server/share/xcat/install/scripts/pre.sles
+++ b/xCAT-server/share/xcat/install/scripts/pre.sles
@@ -50,14 +50,14 @@ BEGIN {
 	while(1) {
 		ns |& getline
 
-#		if(\$1 == "sh") { #TODO: ENABLE IF DEBUG
-#			sub(/^sh +/,"",\$0)
-#			output = \$0
-#			while((output | getline) > 0)
-#				print \$0 |& ns
-#			print "EOO" |& ns
-#			close(output)
-#		}
+#UNCOMMENONXCATDEBUGMODE#		if(\$1 == "sh") { #TODO: ENABLE IF DEBUG
+#UNCOMMENONXCATDEBUGMODE#			sub(/^sh +/,"",\$0)
+#UNCOMMENONXCATDEBUGMODE#			output = \$0
+#UNCOMMENONXCATDEBUGMODE#			while((output | getline) > 0)
+#UNCOMMENONXCATDEBUGMODE#				print \$0 |& ns
+#UNCOMMENONXCATDEBUGMODE#			print "EOO" |& ns
+#UNCOMMENONXCATDEBUGMODE#			close(output)
+#UNCOMMENONXCATDEBUGMODE#		}
 
 		if(\$1 == "screendump") {
 			output = "chvt " \$2 ";cat /dev/vcs"
diff --git a/xCAT-server/share/xcat/install/scripts/pre.ubuntu b/xCAT-server/share/xcat/install/scripts/pre.ubuntu
index 1fc63dfb6..0ee54f33e 100644
--- a/xCAT-server/share/xcat/install/scripts/pre.ubuntu
+++ b/xCAT-server/share/xcat/install/scripts/pre.ubuntu
@@ -90,11 +90,11 @@ fi
 read cmd arg remainder
 
 case "\$cmd" in
-#   "sh")                        #TODO: ENABLE IF DEBUG
-#       output=\$(eval \$arg \$remainder)
-#       echo "\$output"
-#       echo "EOO"
-#       ;;
+#UNCOMMENONXCATDEBUGMODE#   "sh")                        #TODO: ENABLE IF DEBUG
+#UNCOMMENONXCATDEBUGMODE#       output=\$(eval \$arg \$remainder)
+#UNCOMMENONXCATDEBUGMODE#       echo "\$output"
+#UNCOMMENONXCATDEBUGMODE#       echo "EOO"
+#UNCOMMENONXCATDEBUGMODE#       ;;
 
     "screendump")
         output=\$(eval chvt \$arg; cat /dev/vcs)
diff --git a/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64 b/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64
index 45637333d..9a92ba14a 100644
--- a/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64
+++ b/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64
@@ -90,11 +90,11 @@ fi
 read cmd arg remainder
 
 case "\$cmd" in
-#   "sh")                        #TODO: ENABLE IF DEBUG
-#       output=\$(eval \$arg \$remainder)
-#       echo "\$output"
-#       echo "EOO"
-#       ;;
+#UNCOMMENONXCATDEBUGMODE#   "sh")                        #TODO: ENABLE IF DEBUG
+#UNCOMMENONXCATDEBUGMODE#       output=\$(eval \$arg \$remainder)
+#UNCOMMENONXCATDEBUGMODE#       echo "\$output"
+#UNCOMMENONXCATDEBUGMODE#       echo "EOO"
+#UNCOMMENONXCATDEBUGMODE#       ;;
 
     "screendump")
         output=\$(eval chvt \$arg; cat /dev/vcs)
diff --git a/xCAT-server/share/xcat/install/ubuntu/compute.tmpl b/xCAT-server/share/xcat/install/ubuntu/compute.tmpl
index 336c15872..e052c4835 100644
--- a/xCAT-server/share/xcat/install/ubuntu/compute.tmpl
+++ b/xCAT-server/share/xcat/install/ubuntu/compute.tmpl
@@ -7,6 +7,18 @@ d-i localechooser/supported-locales multiselect en_US.UTF-8
 d-i console-setup/ask_detect boolean false
 d-i keyboard-configuration/layoutcode string en
 
+
+
+# Use the following settings if you wish to make use of the network-console
+# component for remote installation over SSH. This only makes sense if you
+# intend to perform the remainder of the installation manually.
+#UNCOMMENONXCATDEBUGMODE#  d-i anna/choose_modules string network-console
+#d-i network-console/authorized_keys_url string http://10.0.0.1/openssh-key
+#UNCOMMENONXCATDEBUGMODE# d-i network-console/password password cluster
+#UNCOMMENONXCATDEBUGMODE# d-i network-console/password-again password cluster
+
+
+
 ### Network Configuration
 
 d-i netcfg/get_hostname string unassigned-hostname