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Diffstat (limited to 'chapter07/ethnet.xml')
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diff --git a/chapter07/ethnet.xml b/chapter07/ethnet.xml new file mode 100644 index 000000000..a1630a6cc --- /dev/null +++ b/chapter07/ethnet.xml @@ -0,0 +1,188 @@ +<sect1 id="ch09-ethnet"> +<title>Creating the /etc/init.d/ethnet script</title> + +<para> +This section only applies if you are going to configure a network card. +If you're not, skip this section. +</para> + +<para> +Create a new file <filename>/etc/init.d/ethnet</filename> containing the +following: +</para> + +<literallayout> + +<userinput>cat > /etc/init.d/ethnet << "EOF"</userinput> +#!/bin/sh +# Begin /etc/init.d/ethnet +# +# Main script by Gerard Beekmans - gerard@linuxfromscratch.org +# GATEWAY check by Jean-François Le Ray - jfleray@club-internet.fr +# + +# +# Include the functions declared in the /etc/init.d/functions file +# and the variables from the /etc/sysconfig/network file. +# + +source /etc/init.d/functions +source /etc/sysconfig/network + +case "$1" in + start) + +# +# Obtain all the network card configuration files +# + + for interface in $(ls /etc/sysconfig/network-scripts/ifcfg* | \ + grep -v ifcfg-lo) + do +# +# Load the variables from that file +# + + source $interface +# +# If the ONBOOT variable is set to yes, process this file and bring the +# interface down. +# + + if [ "$ONBOOT" == yes ] + then + echo -n "Bringing up the $DEVICE interface..." + /sbin/ifconfig $DEVICE $IP broadcast $BROADCAST \ + netmask $NETMASK + evaluate_retval + fi + done + +# +# If the /etc/sysconfig/network file contains a GATEWAY variable, set +# the gateway. + +# + + if [ "$GATEWAY" != "" ]; then + echo -n "Setting up routing for eth0 interface..." + /sbin/route add default gw $GATEWAY metric 1 + evaluate_retval + fi + ;; + + stop) + +# +# Obtain all the network card configuration files +# + + for interface in $(ls /etc/sysconfig/network-scripts/ifcfg* | \ + grep -v ifcfg-lo) + do +# +# Load the variables from that file +# + + source $interface +# +# If the ONBOOT variable is set, process the file and bring the +# interface down +# + + if [ $ONBOOT == yes ] + then + echo -n "Bringing down the $DEVICE interface..." + /sbin/ifconfig $DEVICE down + evaluate_retval + fi + done + ;; + + restart) + $0 stop + sleep 1 + $0 start + ;; + *) + echo "Usage: $0 {start|stop|restart}" + exit 1 + ;; +esac + +# End /etc/init.d/ethnet +<userinput>EOF</userinput> + +</literallayout> + +<sect2> +<title>Adding default gateway to /etc/sysconfig/network</title> + +<para> +If you require a default gateway to be setup, run the following command: +</para> + +<literallayout> + +<userinput>cat >> /etc/sysconfig/network << "EOF"</userinput> +GATEWAY=192.168.1.2 +<userinput>EOF</userinput> + +</literallayout> + +<para> +Change GATEWAY to match your network setup. +</para> + +</sect2> + +<sect2> +<title>Creating NIC configuration files</title> + +<para> +Which interfaces are brought up and down by the ethnet script depends on +the files in the /etc/sysconfig/network-scripts directory. This +directory should contain files in the form of ifcfg-x where x is an +identification number (or whatever you choose to name it). +</para> + +<para> +First create the network-scripts directory by running: +</para> + +<blockquote><literallayout> + + <userinput>mkdir /etc/sysconfig/network-scripts</userinput> + +</literallayout></blockquote> + +<para> +Now, create new files in that directory containing the following. +Example file names are ifcfg-eth0, ifcfg-eth0:3 and ifcfg-eth1:2 +</para> + +<blockquote><literallayout> + +ONBOOT=yes +DEVICE=eth0 +IP=192.168.1.1 +NETMASK=255.255.255.0 +BROADCAST=192.168.1.255 + +</literallayout></blockquote> + +<para> +Of course, change the values of those four variables in every file to +match the proper setup. Usually NETMASK and BROADCAST will remain the +same, just the DEVICE IP variables will change per network interface. If +the ONBOOT variable is set to yes, the ethnet script will bring it up +during boot up of the system. If set to anything else but yes it will be +ignored by the ethnet script and thus not brought up. +</para> + +</sect2> + +&c9-ethnet-symperm; + +</sect1> + |