diff --git a/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/config_ops_bm_node b/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/config_ops_bm_node
index e516a138a..e67f48393 100755
--- a/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/config_ops_bm_node
+++ b/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/config_ops_bm_node
@@ -100,8 +100,8 @@ change_host_name()
 
     if [ "$str_os_type" = "sles" ];then
         echo "Persistently changing the hostname not implemented yet."
-    #debian ubuntu
-    elif [ "$str_os_type" = "debian" ];then
+    #debian ubuntu and rh7
+    elif [ -f "/etc/hostname" ];then
         conf_file="/etc/hostname"
         echo "$str_hostname" > $conf_file
     else
diff --git a/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/deconfig_ops_bm_node b/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/deconfig_ops_bm_node
index da148f47e..81ef22564 100755
--- a/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/deconfig_ops_bm_node
+++ b/xCAT-OpenStack-baremetal/share/xcat/openstack/postscripts/deconfig_ops_bm_node
@@ -36,8 +36,8 @@ change_host_name()
 
     if [ "$str_os_type" = "sles" ];then
         echo "Persistently changing the hostname not implemented yet."
-    #debian ubuntu
-    elif [ "$str_os_type" = "debian" ];then
+    #debian ubuntu and rh7
+    elif [ -f "/etc/hostname" ];then 
         conf_file="/etc/hostname"
         echo "$str_hostname" > $conf_file
     else
diff --git a/xCAT-server/share/xcat/hamn/deactivate-mn b/xCAT-server/share/xcat/hamn/deactivate-mn
index da2f19dd2..9a4ab6ddf 100755
--- a/xCAT-server/share/xcat/hamn/deactivate-mn
+++ b/xCAT-server/share/xcat/hamn/deactivate-mn
@@ -251,7 +251,11 @@ then
     then
         BOOT_HOSTNAME=$(lsattr -El inet0 -a hostname | awk '{print $2}')
     else # Linux
-        BOOT_HOSTNAME=`grep HOSTNAME /etc/sysconfig/network | cut -f 2 -d "="`
+        if [ -f "/etc/hostname" ]; then
+            BOOT_HOSTNAME=`cat /etc/hostname`
+        else
+            BOOT_HOSTNAME=`grep HOSTNAME /etc/sysconfig/network | cut -f 2 -d "="`
+        fi
     fi
     hostname ${BOOT_HOSTNAME}
 fi
diff --git a/xCAT/postscripts/configeth b/xCAT/postscripts/configeth
index 5bc33da04..195fab5a6 100755
--- a/xCAT/postscripts/configeth
+++ b/xCAT/postscripts/configeth
@@ -393,11 +393,15 @@ elif [ "$1" = "-s" ];then
             fi
         fi
         hostname $NODE
-        grep -i "HOSTNAME" /etc/sysconfig/network
-        if [ $? -eq 0 ];then
-            sed -i "s/.*HOSTNAME.*/HOSTNAME=${NODE}/i" /etc/sysconfig/network
+        if [ -f "/etc/hostname" ]; then
+            echo $NODE > /etc/hostname
         else
-            echo "HOSTNAME=${NODE}" >> /etc/sysconfig/network
+            grep -i "HOSTNAME" /etc/sysconfig/network
+            if [ $? -eq 0 ];then
+                sed -i "s/.*HOSTNAME.*/HOSTNAME=${NODE}/i" /etc/sysconfig/network
+            else
+                echo "HOSTNAME=${NODE}" >> /etc/sysconfig/network
+            fi
         fi
     fi
     exit 0
diff --git a/xCAT/postscripts/hardeths b/xCAT/postscripts/hardeths
index b29e2953c..f3f8b2236 100755
--- a/xCAT/postscripts/hardeths
+++ b/xCAT/postscripts/hardeths
@@ -63,7 +63,11 @@ then
 else
     #RedHat uses /etc/sysconfig/network-scripts/ifcfg-eth<x>
     NICFILEPRE="/etc/sysconfig/network-scripts/ifcfg-"
-    sed -i "s/HOSTNAME.*/HOSTNAME=`hostname`/" /etc/sysconfig/network
+    if [ -f "/etc/hostname" ]; then # for rh7
+        echo `hostname` >/etc/hostname
+    else
+        sed -i "s/HOSTNAME.*/HOSTNAME=`hostname`/" /etc/sysconfig/network
+    fi
     if [ ! -z "$defgw" ]; then
         echo "GATEWAY=$defgw" >> /etc/sysconfig/network
     fi
diff --git a/xCAT/postscripts/updatenetwork b/xCAT/postscripts/updatenetwork
index d1bcd6a4c..8da573914 100644
--- a/xCAT/postscripts/updatenetwork
+++ b/xCAT/postscripts/updatenetwork
@@ -16,11 +16,15 @@ device_names=`ip link |grep "BROADCAST" |awk '{print $2}'   | sed s/://`
 str_cfg_file=''
 if [ -d "/etc/sysconfig/network-scripts/" ];then
     #redhat
-    grep -i HOSTNAME /etc/sysconfig/network
-    if [ $? -eq 0 ];then
-        sed -i "s/HOSTNAME=.*/HOSTNAME=$HOSTNAME/g" /etc/sysconfig/network
+    if [ -f "/etc/hostname" ]; then #RH7
+        echo $HOSTNAME > /etc/hostname
     else
-        echo "HOSTNAME=$HOSTNAME" >> /etc/sysconfig/network
+        grep -i HOSTNAME /etc/sysconfig/network
+        if [ $? -eq 0 ];then
+            sed -i "s/HOSTNAME=.*/HOSTNAME=$HOSTNAME/g" /etc/sysconfig/network
+        else
+            echo "HOSTNAME=$HOSTNAME" >> /etc/sysconfig/network
+        fi
     fi
     for i in $device_names;do
         str_cfg_file="/etc/sysconfig/network-scripts/ifcfg-$i"