diff --git a/docs/source/troubleshooting/os_installation/log_to_mn_cn.rst b/docs/source/troubleshooting/os_installation/log_to_mn_cn.rst
index 8b19712b3..cc39421f7 100644
--- a/docs/source/troubleshooting/os_installation/log_to_mn_cn.rst
+++ b/docs/source/troubleshooting/os_installation/log_to_mn_cn.rst
@@ -22,7 +22,7 @@ The following behavior is observed during OS install:
 +  log        +----+----+----+----+----+----+----+----+----+----+
 |             | CN | Y1           | Y2           | Y2           |
 +-------------+----+----+----+----+----+----+----+----+----+----+
-| Installer   | MN | N  | N  | N  | Y6 | Y6 | N  | Y6 | Y6 | N  |
+| Installer   | MN | N  | N  | N  | Y6 | Y6 | Y6 | Y6 | Y6 | Y6 |
 +  log        +----+----+----+----+----+----+----+----+----+----+
 |             | CN | Y5 | Y5 | Y5 | Y5 | Y5 | Y5 | Y5 | Y5 | Y5 |
 +-------------+----+----+----+----+----+----+----+----+----+----+
diff --git a/xCAT-server/share/xcat/install/scripts/pre.ubuntu b/xCAT-server/share/xcat/install/scripts/pre.ubuntu
index edbf17beb..3ca5e4515 100644
--- a/xCAT-server/share/xcat/install/scripts/pre.ubuntu
+++ b/xCAT-server/share/xcat/install/scripts/pre.ubuntu
@@ -5,6 +5,11 @@ fi
 
 #!/bin/sh
 
+if [ "$XCATDEBUGMODE" = "1" ] || [ "$XCATDEBUGMODE" = "2" ]; then
+    killall syslogd
+    syslogd -R #XCATVAR:XCATMASTER#
+fi
+
 if [ ! -c /dev/vcs ]; then
     mknod /dev/vcs c 7 0
 fi
diff --git a/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64 b/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64
index 81d44053a..7fe22bf84 100644
--- a/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64
+++ b/xCAT-server/share/xcat/install/scripts/pre.ubuntu.ppc64
@@ -1,5 +1,15 @@
+export XCATDEBUGMODE="#TABLEBLANKOKAY:site:key=xcatdebugmode:value#"
+if [ "$XCATDEBUGMODE" = "1" ] || [ "$XCATDEBUGMODE" = "2" ]; then
+    set -x
+fi
+
 #!/bin/sh
 
+if [ "$XCATDEBUGMODE" = "1" ] || [ "$XCATDEBUGMODE" = "2" ]; then
+    killall syslogd
+    syslogd -R #XCATVAR:XCATMASTER#
+fi
+
 if [ ! -c /dev/vcs ]; then
     mknod /dev/vcs c 7 0
 fi
@@ -222,3 +232,7 @@ echo "    ." >> /tmp/partitionfile
 
 exit 0
 
+if [ "$XCATDEBUGMODE" = "1" ] || [ "$XCATDEBUGMODE" = "2" ]; then
+then
+    set +x
+fi