last changes

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1445 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
This commit is contained in:
Gerard Beekmans 2002-01-15 21:51:38 +00:00
parent a3be86d628
commit 00a2bd121d
4 changed files with 62 additions and 168 deletions

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&c7-setclock;
&c7-hostname;
&c7-hosts;
&c7-ethnet;
&c7-network;
</chapter>

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<sect1 id="ch07-ethnet">
<title>Creating the ethnet script</title>
<?dbhtml filename="ethnet.html" dir="chapter07"?>
<para>This section only applies if a user is going to configure a network card.
If not, this section can be skipped.</para>
<para>Create the <filename>/etc/init.d/ethnet</filename> script by running the
following command:</para>
<para><screen><userinput>cat &gt; /etc/init.d/ethnet &lt;&lt; "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
# "Specify which IF to use to reach default GATEWAY" by
# Graham Cantin - gcantin@pacbell.net
#
#
# 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 $(/bin/ls /etc/sysconfig/nic-config/ifcfg* | \
grep -v ifcfg-lo)
do
#
# Load the variables from that file
#
source $interface
#
# If the ONBOOT variable is set to yes, process this file and bring the
# interface up.
#
if [ "$ONBOOT" == yes ]
then
echo -n "Bringing up the $DEVICE interface..."
/sbin/ifconfig $DEVICE $IP broadcast $BROADCAST \
netmask $NETMASK
evaluate_retval
fi
done
#
# If the /etc/sysconfig/network file contains a GATEWAY variable, set
# the default gateway and the interface through which the default
# gateway can be reached.
#
if [ "$GATEWAY" != "" ]; then
echo -n "Setting up routing for $GATEWAY_IF interface..."
/sbin/route add default gateway $GATEWAY \
metric 1 dev $GATEWAY_IF
evaluate_retval
fi
;;
stop)
#
# Obtain all the network card configuration files
#
for interface in $(/bin/ls /etc/sysconfig/nic-config/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></screen></para>
<sect2>
<title>Adding default gateway to /etc/sysconfig/network</title>
<para>If a default gateway is required to be setup, the
following command does that:</para>
<para><screen><userinput>cat &gt;&gt; /etc/sysconfig/network &lt;&lt; "EOF"</userinput>
GATEWAY=192.168.1.2
GATEWAY_IF=eth0
<userinput>EOF</userinput></screen></para>
<para>GATEWAY and GATEWAY_IF need to be changed to match the network setup.
GATEWAY contains the address of the default gateway, and GATEWAY_IF
contains the network interface through which that default gateway can
be reached.</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/nic-config directory. This
directory should contain files in the form of ifcfg-x where x is an
identification number (or whatever a user named it).</para>
<para>First the nic-config directory is created by running:</para>
<para><screen><userinput>mkdir /etc/sysconfig/nic-config</userinput></screen></para>
<para>Now, new files are created in that directory containing the following.
The following command creates a sample file ifcfg-eth0:</para>
<para><screen><userinput>cat &gt; /etc/sysconfig/nic-config/ifcfg-eth0 &lt;&lt; "EOF"</userinput>
ONBOOT=yes
DEVICE=eth0
IP=192.168.1.1
NETMASK=255.255.255.0
BROADCAST=192.168.1.255
<userinput>EOF</userinput></screen></para>
<para>Of course, the values of those four variables have to be changed
in every file to
match the proper setup. Usually NETMASK and BROADCAST will remain the
same, just the DEVICE and 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>
</sect1>

60
chapter07/network.xml Normal file
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<sect1 id="ch07-network">
<title>Configuring the network script</title>
<?dbhtml filename="network.html" dir="chapter07"?>
<para>This section only applies if you're going to configure a network
card.</para>
<sect2>
<title>Configuring default gateway</title>
<para>If you're on a network you may need to setup the default gateway for
this machine. This is done by adding the proper values to the
/etc/sysconfig/network file by running the following:</para>
<para><screen><userinput>cat &gt;&gt; /etc/sysconfig/network &lt;&lt; "EOF"</userinput>
GATEWAY=192.168.1.2
GATEWAY_IF=eth0
<userinput>EOF</userinput></screen></para>
<para>The values for GATEWAY and GATEWAY_IF need to be changed to match
your network setup. GATEWAY contains the IP address of the default
gateway, and GATEWAY_IF contains the network interface through which the
default gateway can be reached.</para>
</sect2>
<sect2>
<title>Creating network interface configuration files</title>
<para>Which interfaces are brought up and down by the network script depends on
the files in the /etc/sysconfig/network-devices directory. This
directory should contain files in the form of ifconfig.xyz, where xyz is a
network interface name (such as eth0 or eth0:1)</para>
<para>First let's create this directory by running:</para>
<para><screen><userinput>mkdir /etc/sysconfig/nic-config</userinput></screen></para>
<para>Now, new files are created in that directory containing the following.
The following command creates a sample ifconfig.eth0 file:</para>
<para><screen><userinput>cat &gt; /etc/sysconfig/network-devices/ifconfig.eth0 &lt;&lt; "EOF"</userinput>
ONBOOT=yes
DEVICE=eth0
IP=192.168.1.1
NETMASK=255.255.255.0
BROADCAST=192.168.1.255
<userinput>EOF</userinput></screen></para>
<para>Of course, the values of those variables have to be changed
in every file to match the proper setup. Usually NETMASK and BROADCAST
will remain the same, just the DEVICE and IP variables will change per
network interface. If the ONBOOT variable is set to yes, the network script
will bring it up during boot up of the system. If set to anything else but
yes it will be ignored by the network script and thus not brought up.</para>
</sect2>
</sect1>

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<!ENTITY c7-setclock SYSTEM "chapter7/setclock.xml">
<!ENTITY c7-hostname SYSTEM "chapter7/hostname.xml">
<!ENTITY c7-hosts SYSTEM "chapter7/hosts.xml">
<!ENTITY c7-ethnet SYSTEM "chapter7/ethnet.xml">
<!ENTITY c7-network SYSTEM "chapter7/network.xml">
<!ENTITY chapter8 SYSTEM "chapter8/chapter8.xml">
<!ENTITY c8-introduction SYSTEM "chapter8/introduction.xml">