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Version: 1.2.0

Create Docker machine on AWS EC2

Install Docker machine in AWS EC2 instance​

You will need to install AWS CLI in order to do this.

$ docker-machine create --driver amazonec2 --amazonec2-access-key AKIA**** --amazonec2-secret-key **** aws
$ eval $(docker-machine env aws)
$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

Setup VPN tunnel to the Docker machine​

https://blog.ambar.cloud/tutorial-set-up-openvpn-with-docker-compose/

Create OpenVPN config dir​

docker-machine ssh aws mkdir openvpn-docker

Create docker-compose.yml with the following​

version: '2'
services:
  openvpn:
    cap_add:
     - NET_ADMIN
    image: kylemanna/openvpn
    container_name: openvpn
    ports:
     - "1194:1194/udp"
    restart: always
    volumes:
     - /home/ubuntu/openvpn-docker:/etc/openvpn

Fetch OpenVPN Docker image​

docker-compose run --rm openvpn ovpn_genconfig -u udp://aws

Generate certificates​

docker-compose run --rm openvpn ovpn_initpki

Start OpenVPN container​

$ docker-compose up -d openvpn
$ docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                    NAMES
09934f3f52b2        kylemanna/openvpn   "ovpn_run"          6 seconds ago       Up 4 seconds        0.0.0.0:1194->1194/udp   openvpn

Generate certificate for a client​

docker-compose run --rm openvpn easyrsa build-client-full client nopass

Get config to local machine​

docker-compose run --rm openvpn ovpn_getclient client > aws.ovpn

Import config to your OpenVPN client (Tunnelblick on Mac)​

right click on aws.ovpn in finder and Open With -> Tunnelblick.app

Add IP address of your aws machine to /etc/hosts (might need to sudo this)​

sudo sh
echo $(docker-machine ip aws-mql) aws-mql >> /etc/hosts

Before you can connect to the OpenVPN server you need to open the OpenVPN inbound port on the AWS EC2 instance​

  • log into AWS console
  • go to EC2 dashboard/Security Groups/docker-machine select Inbound
  • add Custom UDP rule - protocol UDP, port 1194, source 0.0.0.0/0
  • add also HTTP (80), HTTPS (443) port for manager, 8081 (Keycloak) and 5432 PostgreSQL.
  • set in demo.yml IDENTITY_NETWORK_HOST: aws (or IP address of the AWS machine)

Now you should be able to connect Tunnelblick with the OpenVPN server, however before you do this add the default VirtualBox IP to it.​

docker-machine ssh aws
sudo vi /etc/network/interfaces

Insert the following​

auto eth0:1
iface eth0:1 inet static
address 192.168.99.100
netmask 255.255.255.0

Restart networking​

sudo /etc/init.d/networking restart

Now you should see the following interface on the aws instance​

$ ifconfig
...
eth0:1    Link encap:Ethernet  HWaddr 0e:9b:63:c2:cc:54
          inet addr:192.168.99.100  Bcast:192.168.99.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:9001  Metric:1

It is time to open the Tunnelblick connection and you should be able to ping 192.168.99.100​

$ ping 192.168.99.100
PING 192.168.99.100 (192.168.99.100): 56 data bytes
64 bytes from 192.168.99.100: icmp_seq=0 ttl=63 time=113.606 ms

Now you can use the AWS EC2 instance as a local VirtualBox Docker machine. This will save your local resources. It is compatible with current free Tier offer, so you can have it 12 months for free.