peterwillcn

Deploying Elixir and Phoenix applications using Docker and Exrm

Goal

By the end of this quick guide, you will know how to compile a Phoenix app release using Exrm and run it inside a Docker container. I've found only a couple of articles that discuss getting an Elixir app up and running inside a Docker container, and even those only touched on some parts of the process. The idea is that this guide will give you a full end-to-end example of how to get all the pieces and parts working together so that you are able to deploy your Phoenix application inside a Docker container.

Assumptions

1. You already have a working Elixir environment with the Phoenix Framework installed
2. You have at least basic working knowledge of Docker, and have installed the Docker tools onto your local environment

peterwillcn

1. Clone your fork:

git clone [email protected]:YOUR-USERNAME/YOUR-FORKED-REPO.git

2. Add remote from original repository in your forked repository:

cd into/cloned/fork-repo
git remote add upstream git://github.com/ORIGINAL-DEV-USERNAME/REPO-YOU-FORKED-FROM.git
git fetch upstream

peterwillcn

If you want a run-down of the 1.3 changes and the design decisions behidn those changes, check out the LonestarElixir Phoenix 1.3 keynote: https://www.youtube.com/watch?v=tMO28ar0lW8

To use the new phx.new project generator, you can install the archive with the following command:

$ mix archive.install https://github.com/phoenixframework/archives/raw/master/phx_new.ez

Bump your phoenix dep

Phoenix v1.3.0 is a backwards compatible release with v1.2.x. To upgrade your existing 1.2.x project, simply bump your phoenix dependency in mix.exs:

peterwillcn

require 'openssl'

def hotp(secret, counter, digits = 6)
  hash = OpenSSL::HMAC.digest(OpenSSL::Digest.new('sha1'), secret, int_to_bytestring(counter))
  "%0#{digits}i" % (truncate(hash) % 10**digits)
end

def truncate(string)
  offset = string.bytes.last & 0xf
  partial = string.bytes[offset..offset+3]

peterwillcn

require 'openssl'

def hotp(secret, counter, digits = 6)
  hash = OpenSSL::HMAC.digest(OpenSSL::Digest.new('sha1'), secret, int_to_bytestring(counter))
  "%0#{digits}i" % (truncate(hash) % 10**digits)
end

def truncate(string)
  offset = string.bytes.last & 0xf
  partial = string.bytes[offset..offset+3]

peterwillcn

Booting with CNXSoft image

Reference: http://www.cnx-software.com/2012/07/31/84-mb-minimal-raspbian-armhf-image-for-raspberry-pi/

curl -O https://dl.dropbox.com/u/45842273/2012-07-15-wheezy-raspian-minimal.img.7z

yum install p7zip
7za e 2012-07-15-wheezy-raspian-minimal.img.7z

qemu-system-arm -kernel kernel-qemu -cpu arm1176 -m 256 -M versatilepb -no-reboot -serial stdio -append "root=/dev/sda2 panic=1" -hda 2012-07-15-wheezy-raspian-minimal.img -net nic -net user -vnc :0 -net tap,ifname=vnet0,script=no,downscript=no

peterwillcn

#!/usr/bin/env python
#coding=utf-8
#
# Generate a list of dnsmasq rules with ipset for gfwlist
#
# Copyright (C) 2014 http://www.shuyz.com
# Ref https://code.google.com/p/autoproxy-gfwlist/wiki/Rules

import urllib2
import re

peterwillcn

#!/usr/bin/env bash

# names of latest versions of each package
export VERSION_PCRE=pcre-8.38
export VERSION_OPENSSL=openssl-1.0.2d
export VERSION_NGINX=nginx-1.9.7

# URLs to the source directories
export SOURCE_OPENSSL=https://www.openssl.org/source/
export SOURCE_PCRE=ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/

peterwillcn

#include <opencv/cv.h>
#include <opencv/highgui.h>
#include <opencv/ml.h>

void doMosaic(IplImage* in, int x, int y,
              int width, int height, int size);

int main (int argc, char **argv)
{
  int i, c;

peterwillcn

1   # From http://goldmann.pl/blog/2014/01/21/connecting-docker-containers-on-multiple-hosts/ 
2 	# Edit this variable: the 'other' host.
3 	REMOTE_IP=192.168.0.103
4 	 
5 	# Edit this variable: the bridge address on 'this' host.
6 	BRIDGE_ADDRESS=172.17.43.1/24
7 	 
8 	# Name of the bridge (should match /etc/default/docker).
9 	BRIDGE_NAME=docker0
10