tenku/docker/docker-iptables

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#!/bin/bash
## docker-iptables
##
## @author gdm85
## script to show iptables rules with docker names
## can be used also to detect problems with dead containers and stale iptable rules
## supports standard iptables-save syntax
#
function replace_iptables() {
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local CID
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local SEDCMD=""
for CID in $(docker ps -q -a); do
local NAME=$(docker inspect --format '{{ .Name }}' $CID | awk '{ print substr($0, 2, length($0)-1) }')
local IP=$(docker inspect --format '{{ .NetworkSettings.IPAddress }}' $CID)
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if [ -z "$IP" ]; then
continue
fi
SEDCMD="$SEDCMD -e s!$IP/32!${NAME}!g -e s!$IP!${NAME}!g"
done
sed $SEDCMD
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}
iptables-save $@ | replace_iptables