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Add variable for binary locations

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This commit is contained in:
ddrager 2016-04-12 10:21:31 -04:00
parent a1370a2013
commit d931666874
1 changed files with 22 additions and 19 deletions
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41
docker.sh Normal file → Executable file
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@ -1,5 +1,8 @@
#!/bin/bash
DOCKER_DIR="/bin"
IPTABLES_DIR="/sbin"
chain_exists() {
[ $# -lt 1 -o $# -gt 2 ] && {
echo "Usage: chain_exists <chain_name> [table]" >&2
@ -7,36 +10,36 @@ chain_exists() {
}
local chain_name="$1" ; shift
[ $# -eq 1 ] && local table="--table $1"
/sbin/iptables $table -n --list "$chain_name" >/dev/null 2>&1
${IPTABLES_DIR}/iptables $table -n --list "$chain_name" >/dev/null 2>&1
}
DOCKER_INT="docker0"
DOCKER_NETWORK="172.17.0.0/16"
/sbin/iptables-save | grep -v -- '-j DOCKER' | /sbin/iptables-restore
chain_exists DOCKER && /sbin/iptables -X DOCKER
chain_exists DOCKER nat && /sbin/iptables -t nat -X DOCKER
${IPTABLES_DIR}/iptables-save | grep -v -- '-j DOCKER' | ${IPTABLES_DIR}/iptables-restore
chain_exists DOCKER && ${IPTABLES_DIR}/iptables -X DOCKER
chain_exists DOCKER nat && ${IPTABLES_DIR}/iptables -t nat -X DOCKER
/sbin/iptables -N DOCKER
/sbin/iptables -t nat -N DOCKER
${IPTABLES_DIR}/iptables -N DOCKER
${IPTABLES_DIR}/iptables -t nat -N DOCKER
/sbin/iptables -A FORWARD -o ${DOCKER_INT} -j DOCKER
/sbin/iptables -A FORWARD -o ${DOCKER_INT} -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
/sbin/iptables -A FORWARD -i ${DOCKER_INT} ! -o ${DOCKER_INT} -j ACCEPT
/sbin/iptables -A FORWARD -i ${DOCKER_INT} -o ${DOCKER_INT} -j ACCEPT
${IPTABLES_DIR}/iptables -A FORWARD -o ${DOCKER_INT} -j DOCKER
${IPTABLES_DIR}/iptables -A FORWARD -o ${DOCKER_INT} -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
${IPTABLES_DIR}/iptables -A FORWARD -i ${DOCKER_INT} ! -o ${DOCKER_INT} -j ACCEPT
${IPTABLES_DIR}/iptables -A FORWARD -i ${DOCKER_INT} -o ${DOCKER_INT} -j ACCEPT
/sbin/iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
/sbin/iptables -t nat -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER
/sbin/iptables -t nat -A POSTROUTING -s ${DOCKER_NETWORK} ! -o ${DOCKER_INT} -j MASQUERADE
${IPTABLES_DIR}/iptables -t nat -A PREROUTING -m addrtype --dst-type LOCAL -j DOCKER
${IPTABLES_DIR}/iptables -t nat -A OUTPUT ! -d 127.0.0.0/8 -m addrtype --dst-type LOCAL -j DOCKER
${IPTABLES_DIR}/iptables -t nat -A POSTROUTING -s ${DOCKER_NETWORK} ! -o ${DOCKER_INT} -j MASQUERADE
containers=`/bin/docker ps -q`
containers=`${DOCKER_DIR}/docker ps -q`
if [ `echo ${containers} | wc -c` -gt "1" ] ; then
for container in ${containers} ; do
rules=`/bin/docker port ${container} | sed 's/ //g'`
rules=`${DOCKER_DIR}/docker port ${container} | sed 's/ //g'`
if [ `echo ${rules} | wc -c` -gt "1" ] ; then
ipaddr=`/bin/docker inspect -f "{{.NetworkSettings.IPAddress}}" ${container}`
ipaddr=`${DOCKER_DIR}/docker inspect -f "{{.NetworkSettings.IPAddress}}" ${container}`
for rule in ${rules} ; do
src=`echo ${rule} | awk -F'->' '{ print $2 }'`
@ -48,10 +51,10 @@ if [ `echo ${containers} | wc -c` -gt "1" ] ; then
dst_port=`echo ${dst} | awk -F'/' '{ print $1 }'`
dst_proto=`echo ${dst} | awk -F'/' '{ print $2 }'`
/sbin/iptables -A DOCKER -d ${ipaddr}/32 ! -i ${DOCKER_INT} -o ${DOCKER_INT} -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j ACCEPT
${IPTABLES_DIR}/iptables -A DOCKER -d ${ipaddr}/32 ! -i ${DOCKER_INT} -o ${DOCKER_INT} -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j ACCEPT
/sbin/iptables -t nat -A POSTROUTING -s ${ipaddr}/32 -d ${ipaddr}/32 -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j MASQUERADE
/sbin/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_DIR}/iptables -t nat -A POSTROUTING -s ${ipaddr}/32 -d ${ipaddr}/32 -p ${dst_proto} -m ${dst_proto} --dport ${dst_port} -j MASQUERADE
${IPTABLES_DIR}/iptables -t nat -A DOCKER ! -i ${DOCKER_INT} -p ${dst_proto} -m ${dst_proto} --dport ${src_port} -j DNAT --to-destination ${ipaddr}:${dst_port}
done
fi
done