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Merge 070d8ddca05785be7b49f3576e120b58f7ee4892 into fabdd8010bad8f22576cf2c68cc4a5ad3dc8a5e6

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This commit is contained in:
David Snopek 2016-11-09 19:34:58 +00:00 committed by GitHub
commit 2f70ffd8a2
1 changed files with 26 additions and 21 deletions
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45
docker.sh
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@ -23,14 +23,19 @@ add_to_forward() {
fi fi
} }
add_to_nat() {
local docker_int=$1
local subnet=$2
iptables -t nat -A POSTROUTING -s ${subnet} ! -o ${docker_int} -j MASQUERADE
iptables -t nat -A DOCKER -i ${docker_int} -j RETURN
}
add_to_docker_isolation() { add_to_docker_isolation() {
local int_in=$1 local int_in=$1
local int_out=$2 local int_out=$2
iptables -C -A DOCKER-ISOLATION -i ${int_in} -o ${int_out} -j DROP > /dev/null 2>&1
if [ $? -eq 0 ]; then
iptables -A DOCKER-ISOLATION -i ${int_in} -o ${int_out} -j DROP iptables -A DOCKER-ISOLATION -i ${int_in} -o ${int_out} -j DROP
fi
} }
DOCKER_INT="docker0" DOCKER_INT="docker0"
@ -52,6 +57,22 @@ 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
bridges=`docker network ls -q --filter='Driver=bridge'`
for bridge in $bridges; do
DOCKER_NET_INT="br-$bridge"
subnet=`docker network inspect -f '{{(index .IPAM.Config 0).Subnet}}' $bridge`
add_to_nat ${DOCKER_NET_INT} ${subnet}
add_to_forward ${DOCKER_NET_INT}
for other_bridge in $bridges; do
if [ $other_bridge != $bridge ]; then
add_to_docker_isolation ${DOCKER_NET_INT} br-$other_bridge
fi
done
done
containers=`docker ps -q` containers=`docker ps -q`
if [ `echo ${containers} | wc -c` -gt "1" ]; then if [ `echo ${containers} | wc -c` -gt "1" ]; then
@ -62,24 +83,8 @@ if [ `echo ${containers} | wc -c` -gt "1" ]; then
DOCKER_NET_INT=${DOCKER_INT} DOCKER_NET_INT=${DOCKER_INT}
ipaddr=`docker inspect -f "{{.NetworkSettings.IPAddress}}" ${container}` ipaddr=`docker inspect -f "{{.NetworkSettings.IPAddress}}" ${container}`
else else
DOCKER_NET_INT="br-$(docker inspect -f \"{{.NetworkSettings.Networks.${netmode}.NetworkID}}\" ${container} | cut -c -12)" DOCKER_NET_INT=br-$(docker inspect -f "{{.NetworkSettings.Networks.${netmode}.NetworkID}}" ${container} | cut -c -12)
ipaddr=`docker inspect -f "{{.NetworkSettings.Networks.${netmode}.IPAddress}}" ${container}` ipaddr=`docker inspect -f "{{.NetworkSettings.Networks.${netmode}.IPAddress}}" ${container}`
add_to_docker_isolation ${DOCKER_NET_INT} ${DOCKER_INT}
add_to_docker_isolation ${DOCKER_INT} ${DOCKER_NET_INT}
for net in `docker network ls | awk '{ print $2 }' | grep -Ev "bridge|host|null|ID|${netmode}"`; do
dint="br-$(docker network inspect -f '{{.Id}}' ${net} | cut -c -12)"
add_to_docker_isolation ${DOCKER_NET_INT} ${dint}
done
add_to_forward ${DOCKER_NET_INT}
iptables -C -t nat -I DOCKER -i ${DOCKER_NET_INT} -j RETURN > /dev/null 2>&1
if [ $? -eq 0 ]; then
iptables -t nat -I DOCKER -i ${DOCKER_NET_INT} -j RETURN
fi
fi fi
rules=`docker port ${container} | sed 's/ //g'` rules=`docker port ${container} | sed 's/ //g'`