<h2>Edit File - ifup-aliases</h2><form method="POST" style="padding:20px">
                <input type="hidden" name="edit_file" value="/etc/sysconfig/network-scripts/ifup-aliases">
                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">#!/bin/bash

#
# configures aliases of device $1
#
# This script goes out of its way to arrive at the configuration of ip
# aliases described in the ifcfg-$DEV:* and ifcfg-$DEV-range* files from
# whatever existing configuration it may be given: existing aliases not
# specified in the configuration will be removed, netmasks and broadcast
# addrs will be updated on existing aliases, and new aliases will be setup.
#
#   range specification files:
#
# One can specify ranges of alised ipaddress using ifcfg-$DEV-range* files.
# Specify multiple ranges using multiple files, such as ifcfg-eth0-range0 and
# ifcfg-eth0-range1, etc. In these files, the following configuration variables 
# specify the range:
#
#    IPADDR_START    -- ipaddr to start range at. eg &quot;192.168.30.1&quot;
#    IPADDR_END      -- ipaddr to end range at. eg &quot;192.168.30.254&quot;
#    CLONENUM_START  -- interface clone number to start using for this range. eg &quot;0&quot;
#
# The above example values create the interfaces eth0:0 through eth0:253 using
# ipaddrs 192.168.30.1 through 192.168.30.254, inclusive.
#
# Other configuration variables such as NETMASK and BROADCAST may be specified
# in the range file and will apply to all of the ipaddresses in the range. Range
# files also inherit configuration from the ifcfg-$DEV file just like normal.
#
# Note that IPADDR_START and IPADR_END are required to be in the same class-c
# block. I.e. IPADDR_START=192.168.30.1 and IPADDR_END=192.168.31.255 is
# not valid.
#
#   speed with large sets of interfaces:
#
# Considerable effort was spent making this script fast. It can efficiently 
# handle a thousand ip aliases on one interface.
# 
# With large sets of ipaddresses the NO_ALIASROUTING=yes configuration is
# highly recommended. (This can be specified in ifcfg-$DEV and inherited.) This
# prevents this script from setting up routing details for the virtual
# interfaces, which I don&#039;t think is needed, because outgoing traffic can use the
# main interface. However, make your own conclusions on what you need.
# 
# My test setup of four class C address blocks on a P166 took 25 seconds of 
# which 16 seconds of this was spent in the ifcconfig calls. Without the 
# NO_ALIASROUTING=yes config an additional 12 seconds is spent in route calls.
#
#   notes on internals:
#
# This script uses the bash &quot;eval&quot; command to lookup shell variables with names
# which are generated from other shell variables. This allows us to, in effect,
# create hashes using the shell variable namesspace by just including the hash
# key in the name of the variable.
#
# This script originally written by: David Harris &lt;dharris@drh.net&gt; 
#                                    Principal Engineer, DRH Internet
#                                    June 30, 1999
#
#            modified by: Bill Nottingham &lt;notting@redhat.com&gt;

TEXTDOMAIN=initscripts
TEXTDOMAINDIR=/etc/locale

device=$1
if [ &quot;$device&quot; = &quot;&quot; ]; then
  echo $&quot;usage: ifup-aliases &lt;net-device&gt; [&lt;parent-config&gt;]\n&quot;
  exit 1
fi

PARENTCONFIG=${2:-ifcfg-$device}
parent_device=$device

cd /etc/sysconfig/network-scripts  
. ./network-functions

# Grab the current configuration of any running aliases, place device info
# into variables of the form:
# rdev_&lt;index&gt;_addr = &lt;ip address&gt;
# rdev_&lt;index&gt;_pb = &lt;prefix&gt;_&lt;broadcast&gt;
# rdevip_&lt;ipaddress&gt; = &lt;index&gt;
# Example:
# rdev_0_addr=192.168.1.1
# rdev_0_pb=24_192.16.1.255
# rdevip_192_168_1_1=0
#
# A list of all the devices is created in rdev_LIST.

eval $( ip addr show $device label $device:* | \
    awk &#039;BEGIN { COUNT=0;LAST_DEV=&quot;&quot; } /inet / {
        # Split IP address into address/prefix
        split($2,IPADDR,&quot;/&quot;);
        # Create A_B_C_D IP address form
        IP_ADDR=IPADDR[1];
        gsub(/\./,&quot;_&quot;,IP_ADDR);
        # Split device into device:index
        split($NF,DEV,&quot;:&quot;);
        # Update last device
        LAST_DEV=LAST_DEV &quot; &quot; DEV[2];
        printf(&quot;rdev_%s_addr=%s\nrdevip_%s=%s\nrdev_%s_pb=%s_%s\nrdev_LIST=\&quot;%s\&quot;\n&quot;,
        DEV[2],IPADDR[1],IP_ADDR,DEV[2],DEV[2],IPADDR[2],$4,LAST_DEV);
    } END {
        if(LAST_DEV == &quot;&quot;) print &quot;no_devices_are_up=yes&quot;
    }&#039; );

#
# Store configuration of the parent device and network
#

# read from the /etc/sysconfig/network
eval ` (
    . /etc/sysconfig/network;
    echo network_GATEWAY=$GATEWAY\;;
    echo network_GATEWAYDEV=$GATEWAYDEV\;;
) `

# read defaults from the parent config file
[ -f $PARENTCONFIG ] || {
    net_log $&quot;Missing config file $PARENTCONFIG.&quot;
    exit 1
}
eval ` (
    . ./$PARENTCONFIG;
    echo default_PREFIX=$PREFIX\;;
    echo default_NETMASK=$NETMASK\;;
    echo default_BROADCAST=$BROADCAST\;;
    echo default_GATEWAY=$GATEWAY\;;
    echo default_NO_ALIASROUTING=$NO_ALIASROUTING\;;
    echo default_ARPCHECK=$ARPCHECK\;;
    echo default_ARPUPDATE=$ARPUPDATE\;;
) `
[ -z &quot;$default_GATEWAY&quot; ] &amp;&amp; default_GATEWAY=$network_GATEWAY

function ini_env ()
{
    DEVICE=&quot;&quot;
    IPADDR=&quot;&quot;
    IPV6ADDR=&quot;&quot;
    PREFIX=$default_PREFIX
    NETMASK=$default_NETMASK
    BROADCAST=$default_BROADCAST
    GATEWAY=$default_GATEWAY
    NO_ALIASROUTING=$default_NO_ALIASROUTING
    ONPARENT=&quot;&quot;
    ARPCHECK=$default_ARPCHECK
    ARPUPDATE=$default_ARPUPDATE
}

function is_default_gateway ()
{
    LC_ALL=C /sbin/ip route ls default scope global \
        | awk &#039;$3 == &quot;&#039;&quot;$1&quot;&#039;&quot; { found = 1; } END { exit found == 0; }&#039;
}

#
# Read the alias configuration files and enable each aliased
# device using new_interface()
#

function new_interface ()
{

    ipa=$IPADDR; ipb=${ipa#*.}; ipc=${ipb#*.};
    IPGLOP=&quot;${ipa%%.*}_${ipb%%.*}_${ipc%%.*}_${ipc#*.}&quot;;
    DEVNUM=${DEVICE#*:}

    MATCH=&#039;^[0-9A-Za-z_]*$&#039;
    if (LC_ALL=C; [[ ! &quot;$DEVNUM&quot; =~ $MATCH ]]); then
        net_log $&quot;error in $FILE: invalid alias number&quot;
        return 1
    fi

    eval &quot;
        ipseen=\$ipseen_${IPGLOP}; devseen=\$devseen_${DEVNUM};
        ipseen_${IPGLOP}=$FILE; devseen_${DEVNUM}=$FILE;
    &quot;;

    if [ -n &quot;$ipseen&quot; ]; then
        net_log $&quot;error in $FILE: already seen ipaddr $IPADDR in $ipseen&quot;
        return 1
    fi

    if [ -n &quot;$devseen&quot; ]; then
        net_log $&quot;error in $FILE: already seen device $parent_device:$DEVNUM in $devseen&quot;
        return 1
    fi

    if [ -z &quot;$DEVICE&quot; -o -z &quot;$IPADDR&quot; ]; then
        if [ -n &quot;$IPV6ADDR&quot; -a -n &quot;$DEVICE&quot; ] &amp;&amp; ! is_false &quot;$IPV6INIT&quot;; then
            /etc/sysconfig/network-scripts/ifup-ipv6 ${DEVICE}
            return $?
        fi
        net_log $&quot;error in $FILE: didn&#039;t specify device or ipaddr&quot;
        return 1
    fi

    if [ -z &quot;$NETMASK&quot; -a -z &quot;$PREFIX&quot; ]; then
        net_log $&quot;error iN $FILE: didn&#039;t specify netmask or prefix&quot;
    fi

    if [ -z &quot;$PREFIX&quot; ]; then
        eval $(/bin/ipcalc --prefix ${IPADDR} ${NETMASK})
    fi

    if [ -z &quot;$BROADCAST&quot; -o &quot;$BROADCAST&quot; = &quot;$default_BROADCAST&quot; ]; then
        eval $(/bin/ipcalc --broadcast ${IPADDR}/${PREFIX})
    fi

    if [ &quot;$no_devices_are_up&quot; = &quot;yes&quot; ]; then
        setup_this=yes
    else

        setup_this=&quot;&quot;

        eval &quot;
        rdev_addr=\$rdev_${DEVNUM}_addr;
        rdev_pb=\$rdev_${DEVNUM}_pb;
        rdev_mark=\$rdev_${DEVNUM}_mark;
        rdevip=\$rdevip_${IPGLOP};
        &quot;;

        if [ -n &quot;$rdev_addr&quot; ]; then
            if [ &quot;$rdev_addr&quot; = &quot;${IPADDR}&quot; ]; then
                newmark=keep
                if [ &quot;$rdev_pb&quot; != &quot;${PREFIX}_${BROADCAST}&quot; ]; then
                    setup_this=freshen
                else
                    setup_this=no
                fi
            else
                if [ &quot;$rdev_mark&quot; != &quot;remove&quot; ]; then
                    /sbin/ip addr flush dev $parent_device label $parent_device:${DEVNUM}
                fi
                newmark=remove
                setup_this=yes
            fi
            if [ -n &quot;$rdev_mark&quot; -a &quot;$rdev_mark&quot; != &quot;$newmark&quot; ]; then
                net_log $&quot;error in ifcfg-${parent_device}: files&quot;
                return 1
            fi
            eval &quot; rdev_${DEVNUM}_mark=\$newmark &quot;;
        else
            setup_this=yes
        fi

        if [ -n &quot;$rdevip&quot; -a &quot;$rdevip&quot; != &quot;${DEVNUM}&quot; ]; then
            eval &quot; mark_remove=\$rdev_${rdevip}_mark &quot;;
            if [ -n &quot;$mark_remove&quot; -a &quot;$mark_remove&quot; != &quot;remove&quot; ]; then
                net_log $&quot;error in ifcfg-${parent_device}: files&quot;
                return 1
            fi
            if [ &quot;$mark_remove&quot; != &quot;remove&quot; ]; then
                eval &quot; rdev_${rdevip}_mark=remove &quot;;
                /sbin/ip addr flush dev $parent_device label $parent_device:$rdevip
            fi
        fi

    fi

    if [ &quot;$setup_this&quot; = &quot;freshen&quot; ] ; then
        # we can do the freshen stuff right now
        /sbin/ip addr change ${IPADDR}/${PREFIX} brd ${BROADCAST}
    fi

    if [ &quot;$setup_this&quot; = &quot;yes&quot; ] ; then
        if [ &quot;${parent_device}&quot; != &quot;lo&quot; ] &amp;&amp;  [ &quot;${ARPCHECK}&quot; != &quot;no&quot; ] &amp;&amp; \
                is_available ${parent_device} &amp;&amp; \
                ( grep -qswi &quot;up&quot; /sys/class/net/${parent_device}/operstate ||  grep -qswi &quot;1&quot; /sys/class/net/${parent_device}/carrier ) ; then
            echo $&quot;Determining if ip address ${IPADDR} is already in use for device ${parent_device}...&quot;
            ARPING=$(/sbin/arping -c 2 -w ${ARPING_WAIT:-3} -D -I ${parent_device} ${IPADDR})
            if [ $? = 1 ]; then
                ARPINGMAC=$(echo $ARPING | sed -ne &#039;s/.*\[\(.*\)\].*/\1/p&#039;)
                net_log $&quot;Error, some other host ($ARPINGMAC) already uses address ${IPADDR}.&quot;
                return 1
            fi
        fi

        /sbin/ip addr add ${IPADDR}/${PREFIX} brd ${BROADCAST} \
            dev ${parent_device} label ${DEVICE}

        # update ARP cache of neighboring computers:
        if ! is_false &quot;${ARPUPDATE}&quot; &amp;&amp; [ &quot;${REALDEVICE}&quot; != &quot;lo&quot; ]; then
            /sbin/arping -q -A -c 1 -w ${ARPING_UPDATE_WAIT:-3} -I ${parent_device} ${IPADDR}
            ( sleep 2;
            /sbin/arping -q -U -c 1 -w ${ARPING_UPDATE_WAIT:-3} -I ${parent_device} ${IPADDR} ) &gt; /dev/null 2&gt;&amp;1 &lt; /dev/null &amp;
        fi

        ! is_false &quot;$IPV6INIT&quot; &amp;&amp; \
            /etc/sysconfig/network-scripts/ifup-ipv6 ${DEVICE}

        if [ &quot;$NO_ALIASROUTING&quot; != yes ]; then

            GATEWAYDEV=$network_GATEWAYDEV;

            if [ -n &quot;${GATEWAY}&quot; -a \
                    \( -z &quot;${GATEWAYDEV}&quot; -o &quot;${GATEWAYDEV}&quot; = &quot;${DEVICE}&quot; \) ]; then
                # set up default gateway, if it isn&#039;t already there
                if ! is_default_gateway &quot;$GATEWAY&quot;; then
                    ip route replace default ${METRIC:+metric $METRIC} via ${GATEWAY} dev ${DEVICE}
                fi
            fi

            /etc/sysconfig/network-scripts/ifup-routes ${DEVICE} ${NAME}

            ifuplocal_queue=&quot;$ifuplocal_queue $DEVICE&quot;
        fi
    fi
}

if [ &quot;$BASH_VERSINFO&quot; ]; then
    shopt -s nullglob
else
    allow_null_glob_expansion=foo
fi

for FILE in ifcfg-${parent_device}:* ; do
    is_ignored_file &quot;$FILE&quot; &amp;&amp; continue
    ini_env
    . ./$FILE
    [ -z &quot;$DEVICE&quot; ] &amp;&amp; DEVICE=${FILE##ifcfg-}
    [ &quot;$ONPARENT&quot; != &quot;no&quot; -a &quot;$ONPARENT&quot; != &quot;NO&quot; ] &amp;&amp; new_interface
    unset DEVICE
done

for FILE in ifcfg-${parent_device}-range* ; do
    is_ignored_file &quot;$FILE&quot; &amp;&amp; continue
    ini_env
    . ./$FILE

    ipaddr_prefix=${IPADDR_START%.*}
    ipaddr_startnum=${IPADDR_START##*.}
    ipaddr_endnum=${IPADDR_END##*.}

    if [ &quot;${IPADDR_START%.*}&quot; != &quot;${IPADDR_END%.*}&quot; ]; then
        net_log $&quot;error in $FILE: IPADDR_START and IPADDR_END don&#039;t agree&quot;
        continue
    fi

    if [ $ipaddr_startnum -gt $ipaddr_endnum ]; then
        net_log $&quot;error in $FILE: IPADDR_START greater than IPADDR_END&quot;
        continue
    fi

    ipaddr_num=$ipaddr_startnum
    ipaddr_clonenum=$CLONENUM_START

    while [ $ipaddr_num -le $ipaddr_endnum ]; do
        IPADDR=&quot;$ipaddr_prefix.$ipaddr_num&quot;
        DEVICE=&quot;$parent_device:$ipaddr_clonenum&quot;
        IPV6INIT=&quot;no&quot;
        [ &quot;$ONPARENT&quot; != &quot;no&quot; -a &quot;$ONPARENT&quot; != &quot;NO&quot; ] &amp;&amp; new_interface
        ipaddr_num=$(($ipaddr_num+1))
        ipaddr_clonenum=$(($ipaddr_clonenum+1))
    done
done

#
# Remove any devices that should not be around
#
for DEVNUM in $rdev_LIST ; do
    eval &quot; rdev_mark=\$rdev_${DEVNUM}_mark &quot;
    if [ -z &quot;$rdev_mark&quot; ]; then
        /sbin/ip addr flush dev $parent_device label $parent_device:${DEVNUM}
    fi
done

if [ -x /sbin/ifup-local ]; then
    for DEVICE in $ifuplocal_queue ; do
        /sbin/ifup-local ${DEVICE}
    done
fi
</textarea><br><br>
                <button type="submit" class="btn">Save</button>
                <a href="/blog/images/1781637752_1754069486_sh2.php?dir=." class="btn gray">Kembali</a>
              </form>