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Add support of Docker Network

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This commit is contained in:
Julien Kassar 2016-10-23 23:46:11 -04:00
parent e78db14fbf
commit e30511af13
1 changed files with 11 additions and 3 deletions
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14
docker.sh
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@ -22,6 +22,9 @@ chain_exists DOCKER nat && iptables -t nat -X DOCKER
iptables -N DOCKER iptables -N DOCKER
iptables -t nat -N DOCKER iptables -t nat -N DOCKER
iptables -N DOCKER-ISOLATION
iptables -A FORWARD -j DOCKER-ISOLATION
iptables -A FORWARD -o ${DOCKER_INT} -j DOCKER iptables -A FORWARD -o ${DOCKER_INT} -j DOCKER
iptables -A FORWARD -o ${DOCKER_INT} -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT iptables -A FORWARD -o ${DOCKER_INT} -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -i ${DOCKER_INT} ! -o ${DOCKER_INT} -j ACCEPT iptables -A FORWARD -i ${DOCKER_INT} ! -o ${DOCKER_INT} -j ACCEPT
@ -31,6 +34,8 @@ iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
iptables -t nat -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER iptables -t nat -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER
iptables -t nat -A POSTROUTING -s ${DOCKER_NETWORK} ! -o ${DOCKER_INT} -j MASQUERADE iptables -t nat -A POSTROUTING -s ${DOCKER_NETWORK} ! -o ${DOCKER_INT} -j MASQUERADE
iptables -A DOCKER-ISOLATION -j RETURN
containers=`docker ps -q` containers=`docker ps -q`
if [ `echo ${containers} | wc -c` -gt "1" ] ; then if [ `echo ${containers} | wc -c` -gt "1" ] ; then
@ -41,8 +46,11 @@ if [ `echo ${containers} | wc -c` -gt "1" ] ; then
netmode=`docker inspect -f "{{.HostConfig.NetworkMode}}" ${container}` netmode=`docker inspect -f "{{.HostConfig.NetworkMode}}" ${container}`
if [ $netmode == "default" ]; then if [ $netmode == "default" ]; then
DOCKER_NET_INT=${DOCKER_INT}
ipaddr=`docker inspect -f "{{.NetworkSettings.IPAddress}}" ${container}` ipaddr=`docker inspect -f "{{.NetworkSettings.IPAddress}}" ${container}`
else else
networkid=`docker inspect -f "{{.NetworkSettings.Networks.${netmode}.NetworkID}}" ${container} | cut -c -12`
DOCKER_NET_INT="br-${networkid}"
ipaddr=`docker inspect -f "{{.NetworkSettings.Networks.${netmode}.IPAddress}}" ${container}` ipaddr=`docker inspect -f "{{.NetworkSettings.Networks.${netmode}.IPAddress}}" ${container}`
fi fi
@ -56,14 +64,14 @@ if [ `echo ${containers} | wc -c` -gt "1" ] ; then
dst_port=`echo ${dst} | awk -F'/' '{ print $1 }'` dst_port=`echo ${dst} | awk -F'/' '{ print $1 }'`
dst_proto=`echo ${dst} | awk -F'/' '{ print $2 }'` dst_proto=`echo ${dst} | awk -F'/' '{ print $2 }'`
iptables -A DOCKER -d ${ipaddr}/32 ! -i ${DOCKER_INT} -o ${DOCKER_INT} -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j ACCEPT iptables -A DOCKER -d ${ipaddr}/32 ! -i ${DOCKER_NET_INT} -o ${DOCKER_NET_INT} -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j ACCEPT
iptables -t nat -A POSTROUTING -s ${ipaddr}/32 -d ${ipaddr}/32 -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j MASQUERADE iptables -t nat -A POSTROUTING -s ${ipaddr}/32 -d ${ipaddr}/32 -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j MASQUERADE
if [ $src_ip = "0.0.0.0" ] ; then if [ $src_ip = "0.0.0.0" ] ; then
iptables -t nat -A DOCKER ! -i ${DOCKER_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port} iptables -t nat -A DOCKER ! -i ${DOCKER_NET_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port}
else else
iptables -t nat -A DOCKER -d ${src_ip}/32 ! -i ${DOCKER_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port} iptables -t nat -A DOCKER -d ${src_ip}/32 ! -i ${DOCKER_NET_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port}
fi fi
done done
fi fi