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This is an example of using Linux Kernel's Transparent Proxy to route all TCP traffic to docker containers without having to resort to PROXY protocol which is not supported by some applications (e.g. sshd). To get the demo to work you only need vagrant installed:

git clone [this-gist] tproxy-demo
cd tproxy-demo
vagrant up

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apiVersion: v1
kind: ReplicationController
metadata:
  name: service-loadbalancer
  labels:
    app: service-loadbalancer
    version: v1
spec:
  replicas: 1
  selector:

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global
  log 127.0.0.1:514 local0

defaults
  mode http
  log global
  option httplog
  option  http-server-close
  option  dontlognull
  option  redispatch

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# This is an example of the Stack Exchange Tier 1 HAProxy config
# The only things that have been changed from what we are running are: 
# 1. User names have been removed
# 2. All Passwords have been remove
# 3. IPs have been changed to use the example/documentation ranges
# 4. Rate limit numbers have been changed to randome numbers, don't read into them

userlist stats-auth
        group admin users $admin_user
        user $admin_user insecure-password $some_password

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#!/usr/bin/env bash

#"Installing s3cmd deis fork"
#pip install git+https://github.com/deis/s3cmd

ETCD_HOST=$1
BACKUP_DIRECTORY=$2

ACCESS_KEY=`etcdctl -C $ETCD_HOST:4001 get /deis/store/gateway/accessKey`
SECRET_KEY=`etcdctl -C $ETCD_HOST:4001 get /deis/store/gateway/secretKey`

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#!/bin/bash
# apt-get install jq
#set -eu
shopt -s nullglob

readonly base_dir=$1
if [ -z "$base_dir" ] ; then
 echo 'please location docker registry store location!';
 exit;
fi

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# Mount the boot partition. The device name will probably be different from "vda".
mount /dev/vda1 /mnt/

# Double check that we are in the right place
cat /mnt/syslinux/boot_kernel.cfg

#label boot_kernel
#  menu label boot_kernel
#  kernel vmlinuz-boot_kernel
#  append console=ttyS0,115200n8 console=tty0 ro noswap cros_legacy  root=LABEL=ROOT rootflags=subvol=root usr=gptprio:

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server {
  listen   80
  server_name foo.com;
  
  location /bar {
    proxy_pass http://bar.local.deisapp.com:80
  }

  location / {
    proxy_pass http://foo.local.deisapp.com:80

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!#/bin/bash

free;sync; echo 3 | sudo tee /proc/sys/vm/drop_caches;free

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FROM ubuntu:14.04

RUN apt-get install -y python-setuptools

RUN easy_install pip

ADD requirements.txt /src/requirements.txt
RUN cd /src; pip install -r requirements.txt

ADD . /src