diff --git a/perl-xCAT/xCAT/PPCdb.pm b/perl-xCAT/xCAT/PPCdb.pm
index 8b50563b7..0bf2a2d7d 100644
--- a/perl-xCAT/xCAT/PPCdb.pm
+++ b/perl-xCAT/xCAT/PPCdb.pm
@@ -769,26 +769,31 @@ sub credentials {
     ###########################################
     # Check passwd tab
     ###########################################
-    my $tab = xCAT::Table->new( 'passwd' );
-    if ( $tab ) {
-        my $ent;
-        if ( $user_specified)
-        {
-            ($ent) = $tab->getAttribs( {key=>$hwtype,username=>$user},qw(password));
-        }
-        else
-        {
-            ($ent) = $tab->getAttribs( {key=>$hwtype}, qw(username password));
-        }
-        if ( $ent ) {
-            if (defined($ent->{password})) { $pass = $ent->{password}; }
-            if (defined($ent->{username})) { $user = $ent->{username}; }
-        }
+    #my $tab = xCAT::Table->new( 'passwd' );
+    #if ( $tab ) {
+    #my $ent;
+    #    if ( $user_specified)
+    #    {
+    #        ($ent) = $tab->getAttribs( {key=>$hwtype,username=>$user},qw(password));
+    #    }
+    #    else
+    #    {
+    #        ($ent) = $tab->getAttribs( {key=>$hwtype}, qw(username password));
+    #    }
+    #    if ( $ent ) {
+    #        if (defined($ent->{password})) { $pass = $ent->{password}; }
+    #        if (defined($ent->{username})) { $user = $ent->{username}; }
+    #    }
+    #}
+    my ($ent) = get_usr_passwd($hwtype, $user); 
+    if ($ent) {
+        if (defined($ent->{password})) { $pass = $ent->{password};}
+        if (defined($ent->{username})) { $user = $ent->{username};}
     }
     ##########################################
     # Check table based on specific node 
     ##########################################
-    $tab = xCAT::Table->new( $hcptab{$hwtype} );
+    my $tab = xCAT::Table->new( $hcptab{$hwtype} );
     if ( $tab ) {
         my $ent;
         if ( $user_specified) 
@@ -825,6 +830,60 @@ sub credentials {
     return( $user,$pass );
 }
 
+##########################################################################
+# Get password for user in 'passwd' table, if doesn't exist, use default
+# password for this user.
+##########################################################################
+my %power_accounts = (
+    HMC => 'abc123',
+    general => 'general',
+    admin => 'admin',    
+);
+my %default_passwd_accounts = (
+    system  => { root => 'cluster',},
+    hmc     => { hscroot => 'abc123',},
+    fsp     => \%power_accounts,
+    bpa     => \%power_accounts,
+    frame   => \%power_accounts,
+    cec     => \%power_accounts,
+    blade   => { USERID => 'PASSW0RD',},
+    ipmi    => { USERID => 'PASSW0RD',},
+    ivm     => { padmin => 'padmin',},
+    vmware  => { root => '',},
+    vcenter => { Administrator => ''},
+);
+
+sub get_usr_passwd {
+    my $key = shift;
+    if ($key && ($key =~ /xCAT::/)) {
+        $key = shift;
+    }
+    my $user = shift;
+    my $ent;
+    my $passwdtab = xCAT::Table->new('passwd');
+    if (!$passwdtab) {
+        return undef;
+    }
+    if ($user) {
+        ($ent) = $passwdtab->getAttribs({key => $key, username => $user}, qw(password cryptmethod));
+    } else {
+        ($ent) = $passwdtab->getNodeAttribs($key, qw(username password));
+    }
+    if (!$ent or !$ent->{password}) {
+        my $hash = $default_passwd_accounts{$key};
+        if (!$hash or ($user and !defined($hash->{$user}))) {
+            return undef;
+        }
+        if (!$user) {
+            my @tmp_keys = keys (%$hash);
+            $user = $tmp_keys[0];
+        }
+        $ent->{username} = $user;
+        $ent->{password} = $hash->{$user};
+    }
+    return $ent;
+}
+
 ##########################################################################
 # Set userids and passwords to tables
 ##########################################################################
diff --git a/xCAT-server/lib/perl/xCAT/Postage.pm b/xCAT-server/lib/perl/xCAT/Postage.pm
index 1d661d682..7945769c4 100644
--- a/xCAT-server/lib/perl/xCAT/Postage.pm
+++ b/xCAT-server/lib/perl/xCAT/Postage.pm
@@ -308,19 +308,22 @@ sub makescript
     #$os =~ tr/A-Z/a-z/;    # Convert to lowercase
     if ($os eq "aix" || $os eq "AIX")
     {
-        my $passwdtab = xCAT::Table->new('passwd');
-        unless ($passwdtab)
-        {
-            my $rsp;
-            push @{$rsp->{data}}, "Unable to open passwd table.";
-            xCAT::MsgUtils->message("E", $rsp, $callback);
-        }
+    #   my $passwdtab = xCAT::Table->new('passwd');
+    #   unless ($passwdtab)
+    #   {
+    #       my $rsp;
+    #       push @{$rsp->{data}}, "Unable to open passwd table.";
+    #       xCAT::MsgUtils->message("E", $rsp, $callback);
+    #   }
 
-        if ($passwdtab)
+    #   if ($passwdtab)
+    #   {
+    #       my $et =
+    #         $passwdtab->getAttribs({key => 'system', username => 'root'},
+    #                                'password', 'cryptmethod');
         {
-            my $et =
-              $passwdtab->getAttribs({key => 'system', username => 'root'},
-                                     'password', 'cryptmethod');
+            use xCAT::PPCdb qw(get_usr_passwd);
+            my $et = xCAT::PPCdb::get_usr_passwd('system', 'root');
             if ($et and defined($et->{'password'}))
             {
                 push @scriptd, "ROOTPW=" . $et->{'password'} . "\n";
diff --git a/xCAT-server/lib/xcat/plugins/aixinstall.pm b/xCAT-server/lib/xcat/plugins/aixinstall.pm
index 33a1753d0..a71d421f7 100644
--- a/xCAT-server/lib/xcat/plugins/aixinstall.pm
+++ b/xCAT-server/lib/xcat/plugins/aixinstall.pm
@@ -3531,7 +3531,7 @@ sub mknimimage
 	#
 	# Set root password in diskless images
 	#
-	my $rootpw;
+	my $rootpw = 'cluster';
 	my $method;
 	if (($::NIMTYPE eq "diskless") || ($::NIMTYPE eq "dataless"))
 	{
diff --git a/xCAT-server/lib/xcat/plugins/packimage.pm b/xCAT-server/lib/xcat/plugins/packimage.pm
index 0cff3afeb..10e5164bd 100644
--- a/xCAT-server/lib/xcat/plugins/packimage.pm
+++ b/xCAT-server/lib/xcat/plugins/packimage.pm
@@ -292,27 +292,28 @@ sub process_request {
    copybootscript($installroot, $rootimg_dir, $osver, $arch, $profile, $callback);
    my $passtab = xCAT::Table->new('passwd');
    if ($passtab) {
-      (my $pent) = $passtab->getAttribs({key=>'system',username=>'root'},'password');
-      if ($pent and defined ($pent->{password})) {
-         my $pass = $pent->{password};
-         my $oldmask=umask(0077);
-         my $shadow;
-         open($shadow,"<","$rootimg_dir/etc/shadow");
-         my @shadents = <$shadow>;
-         close($shadow);
-         open($shadow,">","$rootimg_dir/etc/shadow");
-         unless ($pass =~ /^\$1\$/) {
-            $pass = crypt($pass,'$1$'.genpassword(8));
-         }
-         print $shadow "root:$pass:13880:0:99999:7:::\n";
-         foreach (@shadents) {
-             unless (/^root:/) {
-                print $shadow "$_";
-             }
-         }
-         close($shadow);
-         umask($oldmask);
-      }
+       my $pass = 'cluster';
+       (my $pent) = $passtab->getAttribs({key=>'system',username=>'root'},'password');
+       if ($pent and defined ($pent->{password})) {
+           $pass = $pent->{password};
+       }
+       my $oldmask=umask(0077);
+       my $shadow;
+       open($shadow,"<","$rootimg_dir/etc/shadow");
+       my @shadents = <$shadow>;
+       close($shadow);
+       open($shadow,">","$rootimg_dir/etc/shadow");
+       unless ($pass =~ /^\$1\$/) {
+          $pass = crypt($pass,'$1$'.genpassword(8));
+       }
+       print $shadow "root:$pass:13880:0:99999:7:::\n";
+       foreach (@shadents) {
+           unless (/^root:/) {
+               print $shadow "$_";
+           }
+       }
+       close($shadow);
+       umask($oldmask);
    }
 
     # sync fils configured in the synclist to the rootimage
diff --git a/xCAT-server/lib/xcat/plugins/statelite.pm b/xCAT-server/lib/xcat/plugins/statelite.pm
index 94665a1a0..eb87aa265 100644
--- a/xCAT-server/lib/xcat/plugins/statelite.pm
+++ b/xCAT-server/lib/xcat/plugins/statelite.pm
@@ -163,9 +163,11 @@ sub process_request {
         #get the root password for the node 
 	my $passtab = xCAT::Table->new('passwd');
 	if ($passtab) {
+        my $pass = 'cluster';
 	    (my $pent) = $passtab->getAttribs({key=>'system',username=>'root'},'password');
 	    if ($pent and defined ($pent->{password})) {
-		my $pass = $pent->{password};
+	        $pass = $pent->{password};
+        } 
         my $oldmask=umask(0077);
 		my $shadow;
 		open($shadow,"<","$rootimg_dir/etc/shadow");
@@ -183,7 +185,6 @@ sub process_request {
 		}
 		close($shadow);
         umask($oldmask);
-	    }
 	}
 
 	# sync fils configured in the synclist to the rootimage