#!/bin/bash [ "$LXC_NETWORK" ] || { echo "You must set \$LXC_NETWORK (to something like 172.160.0 ) before using this script." exit 1 } HOST_EXTERNAL_DEVICE=${HOST_EXTERNAL_DEVICE:-eth0} apt-get install -y bind9 dnsmasq echo HOST_EXTERNAL_DEVICE="$HOST_EXTERNAL_DEVICE" >> /etc/default/lxc sed -ri "s%10\.0\.3\.%$LXC_NETWORK.%g;s%^#LXC_DHCP_CONFILE=%LXC_DHCP_CONFILE=%g" /etc/default/lxc-net LXC_ADDR=$(. /etc/default/lxc && echo "$LXC_ADDR") if [ -z "$LXC_ADDR" ]; then LXC_ADDR=$(. <(cat /usr/lib/x86_64-linux-gnu/lxc/lxc-net | grep ^LXC_ADDR | head -n 1) && echo "$LXC_ADDR") fi HOST_IP=$(. /etc/default/lxc && ifip "$HOST_EXTERNAL_DEVICE") echo " server=$LXC_ADDR interface=lo no-negcache log-queries log-facility=/var/log/dnsmasq.log " >> /etc/dnsmasq.conf echo " server=${HOST_IP} log-queries no-negcache log-facility=/var/log/lxc-dnsmasq.log " >> /etc/lxc/dnsmasq.conf ( cp "src/etc/bind/named.conf.options" "/etc/bind/named.conf.options" && sed -ri "s/%%EXTERNAL_IP%%/$HOST_IP/g" "/etc/bind/named.conf.options" ) ## XXXvlab: Maybe we could change this in the service start/stop of the named daemon mkdir /var/log/named -p && chown bind:bind /var/log/named /etc/init.d/bind9 restart /etc/init.d/dnsmasq restart service lxc restart service lxc-net restart ## had to 'brctl delbr lxcbr0' myself cp /etc/resolv.conf{,.orig} cat <<EOF > /etc/resolv.conf nameserver 127.0.0.1 #domain . ## didn't work on 12.04 search localdomain ## imperfect, we don't want to search www.localdomain EOF ## ## Logrotate for dnsmasq and named ## cat <<EOF > /etc/logrotate.d/dnsmasq /var/log/dnsmasq.log { missingok copytruncate notifempty compress postrotate kill -s SIGUSR2 "\$(cat /var/run/dnsmasq/dnsmasq.pid)" endscript } EOF cat <<EOF > /etc/logrotate.d/lxc-dnsmasq /var/log/lxc-dnsmasq.log { missingok copytruncate notifempty compress postrotate kill -s SIGUSR2 "\$(cat /var/run/lxc/dnsmasq.pid)" endscript } EOF cat <<EOF > /etc/logrotate.d/named /var/log/named/*.log { missingok copytruncate notifempty compress } EOF ## ## Testing ## # lsof -i4tcp:53 -n # netstat -ltnp | grep :53 # ping HOST # host HOST # tcpdump