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-<sect1 id="ch07-ethnet">
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-<title>Creating the ethnet script</title>
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-<?dbhtml filename="ethnet.html" dir="chapter07"?>
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-
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-<para>This section only applies if a user is going to configure a network card.
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-If not, this section can be skipped.</para>
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-
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-<para>Create the <filename>/etc/init.d/ethnet</filename> script by running the
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-following command:</para>
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-
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-<para><screen><userinput>cat > /etc/init.d/ethnet << "EOF"</userinput>
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-#!/bin/sh
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-# Begin /etc/init.d/ethnet
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-#
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-# Main script by Gerard Beekmans - gerard@linuxfromscratch.org
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-# GATEWAY check by Jean-François Le Ray - jfleray@club-internet.fr
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-# "Specify which IF to use to reach default GATEWAY" by
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-# Graham Cantin - gcantin@pacbell.net
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-#
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-
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-#
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-# Include the functions declared in the /etc/init.d/functions file
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-# and the variables from the /etc/sysconfig/network file.
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-#
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-
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-source /etc/init.d/functions
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-source /etc/sysconfig/network
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-
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-case "$1" in
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- start)
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-
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-#
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-# Obtain all the network card configuration files
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-#
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-
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- for interface in $(/bin/ls /etc/sysconfig/nic-config/ifcfg* | \
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- grep -v ifcfg-lo)
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- do
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-#
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-# Load the variables from that file
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-#
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-
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- source $interface
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-#
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-# If the ONBOOT variable is set to yes, process this file and bring the
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-# interface up.
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-#
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-
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- if [ "$ONBOOT" == yes ]
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- then
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- echo -n "Bringing up the $DEVICE interface..."
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- /sbin/ifconfig $DEVICE $IP broadcast $BROADCAST \
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- netmask $NETMASK
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- evaluate_retval
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- fi
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- done
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-
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-#
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-# If the /etc/sysconfig/network file contains a GATEWAY variable, set
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-# the default gateway and the interface through which the default
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-# gateway can be reached.
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-#
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-
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- if [ "$GATEWAY" != "" ]; then
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- echo -n "Setting up routing for $GATEWAY_IF interface..."
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- /sbin/route add default gateway $GATEWAY \
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- metric 1 dev $GATEWAY_IF
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- evaluate_retval
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- fi
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- ;;
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-
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- stop)
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-
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-#
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-# Obtain all the network card configuration files
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-#
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-
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- for interface in $(/bin/ls /etc/sysconfig/nic-config/ifcfg* | \
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- grep -v ifcfg-lo)
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- do
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-#
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-# Load the variables from that file
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-#
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-
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- source $interface
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-#
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-# If the ONBOOT variable is set, process the file and bring the
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-# interface down
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-#
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-
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- if [ $ONBOOT == yes ]
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- then
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- echo -n "Bringing down the $DEVICE interface..."
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- /sbin/ifconfig $DEVICE down
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- evaluate_retval
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- fi
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- done
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- ;;
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-
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- restart)
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- $0 stop
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- sleep 1
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- $0 start
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- ;;
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- *)
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- echo "Usage: $0 {start|stop|restart}"
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- exit 1
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- ;;
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-esac
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-
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-# End /etc/init.d/ethnet
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-<userinput>EOF</userinput></screen></para>
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-
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-<sect2>
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-<title>Adding default gateway to /etc/sysconfig/network</title>
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-
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-<para>If a default gateway is required to be setup, the
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-following command does that:</para>
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-
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-<para><screen><userinput>cat >> /etc/sysconfig/network << "EOF"</userinput>
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-GATEWAY=192.168.1.2
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-GATEWAY_IF=eth0
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-<userinput>EOF</userinput></screen></para>
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-
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-<para>GATEWAY and GATEWAY_IF need to be changed to match the network setup.
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-GATEWAY contains the address of the default gateway, and GATEWAY_IF
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-contains the network interface through which that default gateway can
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-be reached.</para>
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-
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-</sect2>
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-
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-<sect2>
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-<title>Creating NIC configuration files</title>
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-
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-<para>Which interfaces are brought up and down by the ethnet script depends on
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-the files in the /etc/sysconfig/nic-config directory. This
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-directory should contain files in the form of ifcfg-x where x is an
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-identification number (or whatever a user named it).</para>
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-
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-<para>First the nic-config directory is created by running:</para>
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-
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-<para><screen><userinput>mkdir /etc/sysconfig/nic-config</userinput></screen></para>
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-
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-<para>Now, new files are created in that directory containing the following.
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-The following command creates a sample file ifcfg-eth0:</para>
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-
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-<para><screen><userinput>cat > /etc/sysconfig/nic-config/ifcfg-eth0 << "EOF"</userinput>
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-ONBOOT=yes
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-DEVICE=eth0
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-IP=192.168.1.1
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-NETMASK=255.255.255.0
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-BROADCAST=192.168.1.255
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-<userinput>EOF</userinput></screen></para>
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-
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-<para>Of course, the values of those four variables have to be changed
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-in every file to
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-match the proper setup. Usually NETMASK and BROADCAST will remain the
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-same, just the DEVICE and IP variables will change per network interface. If
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-the ONBOOT variable is set to yes, the ethnet script will bring it up
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-during boot up of the system. If set to anything else but yes it will be
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-ignored by the ethnet script and thus not brought up.</para>
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-
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-</sect2>
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-
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-</sect1>
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-
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