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