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https://github.com/apache/cloudstack.git
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132 lines
3.3 KiB
Bash
Executable File
132 lines
3.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (C) 2011 Citrix Systems, Inc. All rights reserved
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#
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# This software is licensed under the GNU General Public License v3 or later.
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#
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# It is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# edithosts.sh -- edit the dhcphosts file on the routing domain
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# $mac : the mac address
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# $ip : the associated ip address
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# $host : the hostname
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# $4 : default router
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# $5 : nameserver on default nic
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# $6 : comma separated static routes
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mac=$1
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ip=$2
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host=$3
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dflt=$4
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dns=$5
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routes=$6
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DHCP_HOSTS=/etc/dhcphosts.txt
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DHCP_OPTS=/etc/dhcpopts.txt
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DHCP_LEASES=/var/lib/misc/dnsmasq.leases
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HOSTS=/etc/hosts
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source /root/func.sh
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lock="biglock"
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locked=$(getLockFile $lock)
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if [ "$locked" != "1" ]
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then
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exit 1
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fi
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grep "redundant_router=1" /var/cache/cloud/cmdline > /dev/null
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no_redundant=$?
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wait_for_dnsmasq () {
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local _pid=$(pidof dnsmasq)
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for i in 0 1 2 3 4 5 6 7 8 9 10
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do
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sleep 1
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_pid=$(pidof dnsmasq)
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[ "$_pid" != "" ] && break;
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done
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[ "$_pid" != "" ] && return 0;
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logger -t cloud "edithosts: timed out waiting for dnsmasq to start"
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return 1
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}
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logger -t cloud "edithosts: update $1 $2 $3 to hosts"
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[ ! -f $DHCP_HOSTS ] && touch $DHCP_HOSTS
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[ ! -f $DHCP_OPTS ] && touch $DHCP_OPTS
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[ ! -f $DHCP_LEASES ] && touch $DHCP_LEASES
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#delete any previous entries from the dhcp hosts file
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sed -i /$mac/d $DHCP_HOSTS
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sed -i /$ip,/d $DHCP_HOSTS
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sed -i /$host,/d $DHCP_HOSTS
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#put in the new entry
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echo "$mac,$ip,$host,infinite" >>$DHCP_HOSTS
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#delete leases to supplied mac and ip addresses
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sed -i /$mac/d $DHCP_LEASES
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sed -i /"$ip "/d $DHCP_LEASES
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sed -i /"$host "/d $DHCP_LEASES
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#put in the new entry
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echo "0 $mac $ip $host *" >> $DHCP_LEASES
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#edit hosts file as well
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sed -i /"$ip "/d $HOSTS
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sed -i /"$host "/d $HOSTS
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echo "$ip $host" >> $HOSTS
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if [ "$dflt" != "" ]
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then
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logger -t cloud "$0: setting default router to $dflt"
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#make sure dnsmasq looks into options file
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sed -i /dhcp-optsfile/d /etc/dnsmasq.conf
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echo "dhcp-optsfile=$DHCP_OPTS" >> /etc/dnsmasq.conf
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tag=$(echo $ip | tr '.' '_')
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sed -i /$tag/d $DHCP_OPTS
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echo "$tag,3,$dflt" >> $DHCP_OPTS
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if [ "$dns" != "" ]
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then
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logger -t cloud "$0: setting dns server to $dns"
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echo "$tag,6,$dns" >> $DHCP_OPTS
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fi
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[ "$routes" != "" ] && echo "$tag,121,$routes" >> $DHCP_OPTS
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#delete entry we just put in because we need a tag
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sed -i /$mac/d $DHCP_HOSTS
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#put it back with a tag
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echo "$mac,set:$tag,$ip,$host,infinite" >>$DHCP_HOSTS
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fi
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# make dnsmasq re-read files
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pid=$(pidof dnsmasq)
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if [ "$pid" != "" ]
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then
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service dnsmasq restart
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else
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if [ $no_redundant -eq 1 ]
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then
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wait_for_dnsmasq
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else
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logger -t cloud "edithosts: skip wait dnsmasq due to redundant virtual router"
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fi
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fi
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ret=$?
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unlock_exit $ret $lock $locked
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