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6c26104282
All (almost) files belonging to the systemvm aer now centralize in the systemvm directory. The code for the separate functions is still in the services directory. This will make the code easier to understand and makes it clear that the systemvm is a separate item. It alos means that it can be excluded from the build entirely by not adding the systemvm profile, this will speed up the compiles somewhat.
131 lines
4.3 KiB
Bash
Executable File
131 lines
4.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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usage() {
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printf "Usage: %s: <routerAliasIp:gateway:netmask:start_ip_of_subnet:-routerAlisIp:gateway:....>\n" $(basename $0) >&2
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}
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source /root/func.sh
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lock="biglock"
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locked=$(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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#set -x
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#backup the old config file
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DHCP_CONFIG=/etc/dnsmasq.d/multiple_ranges.conf
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DHCP_CONFIG_BAK=/etc/dnsmasq.d/multiple_ranges.conf.bak
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DHCP_CONFIG_MAIN=/etc/dnsmasq.conf
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DHCP_CONFIG_MAIN_BAK=/etc/dnsmasq.conf.bak
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DHCP_FAILURE_CONFIG=/etc/multiple_ranges.conf.failure
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DHCP_FAILURE_CONFIG_MAIN=/etc/dnsmasq.conf.failure
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CMDLINE=$(cat /var/cache/cloud/cmdline | tr '\n' ' ')
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#take a backup copy of the dnsmasq file.
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cp "$DHCP_CONFIG_MAIN" "$DHCP_CONFIG_MAIN_BAK"
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cp "$DHCP_CONFIG" "$DHCP_CONFIG_BAK"
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#empty the config file
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echo > $DHCP_CONFIG
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var="$1"
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dhcp_range=""
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dhcp_gateway=""
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dhcp_netmask=""
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dns_option=""
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dns_servers=""
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count=0
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# fetching the dns Ips from the command line.
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dns1=$(echo "$CMDLINE" | grep -o " dns1=[[:digit:]].* " | sed -e 's/dns1=//' | awk '{print $1}')
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dns2=$(echo "$CMDLINE" | grep -o " dns2=[[:digit:]].* " | sed -e 's/dns2=//' | awk '{print $1}')
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dns_servers="${dns1}"
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if [ -n "$dns2" ]
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then
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dns_servers="${dns1},${dns2}"
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fi
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# check if useextdns is true
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use_ext_dns=$(echo "$CMDLINE" | grep -o "useextdns=true")
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while [ -n "$var" ]
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do
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var1=$(echo $var | cut -f1 -d "-")
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routerip=$( echo $var1 | cut -f1 -d ":" )
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gateway=$(echo $var1 | cut -f2 -d ":")
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netmask=$(echo $var1 | cut -f3 -d ":")
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start_ip_of_subnet=$(echo $var1 | cut -f4 -d ":")
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dhcp_range="${dhcp_range}"'dhcp-range=set:range'$count","$start_ip_of_subnet",static \n"
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dhcp_gateway="${dhcp_gateway}"'dhcp-option=tag:range'$count",3,"$gateway" \n"
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dhcp_netmask="${dhcp_netmask}"'dhcp-option=tag:range'$count",1,"$netmask" \n"
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if [ -n "$use_ext_dns" ]
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then
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dns_option="${dns_option}"'dhcp-option=tag:range'$count",6,"$dns_servers" \n"
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else
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dns_option="${dns_option}"'dhcp-option=tag:range'$count",6,$routerip"","$dns_servers" \n"
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fi
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var=$( echo $var | sed "s/${var1}-//" )
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count=$[$count+1]
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done
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#logging the configuration being removed.
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log=""
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log="${log}"`grep "^dhcp-option=6" "$DHCP_CONFIG_MAIN"`"\n"
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log="${log}"`grep "^dhcp-option=option:router" "$DHCP_CONFIG_MAIN"`"\n"
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log="${log}"`grep "^dhcp-range=" "$DHCP_CONFIG_MAIN"`"\n"
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if [ "$log" != '\n\n\n' ]
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then
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#Cleaning the existing dhcp confgiuration
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logger -t cloud "dnsmasq.sh: remvoing the primaryip confg from dnsmasq.conf and adding it to /etc/dnsmaq.d/multiple_ranges.conf"
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logger -t cloud "dnsmasq.sh: config removed from dnsmasq.conf is $log"
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sed -i -e '/dhcp-option=6/d' "$DHCP_CONFIG_MAIN"
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sed -i -e '/dhcp-option=option:router/d' "$DHCP_CONFIG_MAIN"
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sed -i -e '/^dhcp-range=/d' "$DHCP_CONFIG_MAIN"
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fi
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#wrting the new config into the config file.
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echo -e "$dhcp_range" >> "$DHCP_CONFIG"
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echo -e "$dhcp_gateway" >> "$DHCP_CONFIG"
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echo -e "$dhcp_netmask" >> "$DHCP_CONFIG"
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echo -e "$dns_option" >> "$DHCP_CONFIG"
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#restart the dnsmasq
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service dnsmasq restart
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result=$?
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if [ "$result" -ne "0" ]
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then
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logger -t cloud "dnsmasq.sh: could not configure dnsmasq"
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logger -t cloud "dnsmasq.sh: reverting to the old config"
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logger -t cloud "dnsmasq.sh: copying the failure config to `$DHCP_FAILURE_CONFIG` and `$DHCP_FAILURE_CONFIG_MAIN`"
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cp "$DHCP_CONFIG" "$DHCP_FAILURE_CONFIG"
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cp "$DHCP_CONFIG_MAIN" "$DHCP_FAILURE_CONFIG_MAIN"
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cp "$DHCP_CONFIG_BAK" "$DHCP_CONFIG"
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cp "$DHCP_CONFIG_MAIN_BAK" "$DHCP_CONFIG_MAIN"
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service dnsmasq restart
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unlock_exit $result $lock $locked
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fi
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rm "$DHCP_CONFIG_BAK"
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rm "$DHCP_CONFIG_MAIN_BAK"
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unlock_exit $result $lock $locked
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