Ciao

Using Docker for Node.js Testing and Deployment

https://slides.com/anaptfox/js-day-docker

Taron Foxworth

Fox

@anaptfox

Lead Sales Engineer 

The Problems

Client side

http://caniuse.com/

The Problems

Node.js

http://stackoverflow.com/questions/9756567/do-you-need-to-use-path-join-in-node-js

The Problems

  Developers have different environments

  Those environments are not the same as production

Clear definition of ... environment

Well... It work on my machine

We can do much, much beter

Docker

Build, Ship and Run Any App, Anywhere 

 

Portable deployment across machines,

even clouds

Component re-use

Containers

Immutable, Fluid Infrastructures

Sanity

FROM ubuntu

# verify gpg and sha256: http://nodejs.org/dist/v0.10.30/SHASUMS256.txt.asc
# gpg: aka "Timothy J Fontaine (Work) <tj.fontaine@joyent.com>"
# gpg: aka "Julien Gilli <jgilli@fastmail.fm>"
RUN gpg --keyserver pool.sks-keyservers.net --recv-keys 7937DFD2AB06298B2293C3187D33FF9D0246406D 114F43EE0176B71C7BC219DD50A3051F888C628D

ENV NODE_VERSION 0.12.2
ENV NPM_VERSION 2.9.1

RUN curl -SLO "http://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
	&& curl -SLO "http://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
	&& gpg --verify SHASUMS256.txt.asc \
	&& grep " node-v$NODE_VERSION-linux-x64.tar.gz\$" SHASUMS256.txt.asc | sha256sum -c - \
	&& tar -xzf "node-v$NODE_VERSION-linux-x64.tar.gz" -C /usr/local --strip-components=1 \
	&& rm "node-v$NODE_VERSION-linux-x64.tar.gz" SHASUMS256.txt.asc \
	&& npm install -g npm@"$NPM_VERSION" \
	&& npm cache clear

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY package.json /usr/src/app/
RUN npm install
COPY . /usr/src/app

CMD [ "npm", "start" ]

DockerFile

https://docs.docker.com/reference/builder/

docker build -t my-node-app .

docker run my-node-app

Build and Running

You've defined the EXACT enviroment

You application would start

Now, Sharing

https://docs.docker.com/userguide/usingdocker/

docker run redis

Docker Hub

Example Images

Easily Try Things

https://registry.hub.docker.com/search?q=library

$: docker tag IMAGE_ID my-company/my-node-app
$: docker push my-company/my-node-app

Docker Hub

Now we have a completely sharable enviroment

$: docker ps -a #get image id


$: docker login

bob $: docker pull my-company/my-node-app

bob $: docker run username/my-node-app

https://docs.docker.com/userguide/dockerimages/#push-an-image-to-docker-hub

$: docker tag IMAGE_ID my-company/my-node-app:1.0.1

Git but for Env

Now, We can version control our environment too

bob $: docker pull my-company/my-node-app:1.0.1

bob $: docker run username/my-node-app:1.0.1

$: docker tag IMAGE_ID my-company/my-node-app:latest

https://docs.docker.com/userguide/dockerimages/

A Better Dockerfile

FROM node:0.12.2

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY package.json /usr/src/app/
RUN npm install
COPY . /usr/src/app

CMD [ "npm", "start" ]

Make use of prebuilt images

https://github.com/docker-library/docs/tree/master/node

Even Better

FROM username/my-company-node:latest

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
COPY package.json /usr/src/app/
RUN npm install
COPY . /usr/src/app

CMD [ "npm", "start" ]

Base image for you company

Deploying Containers

http://docs.aws.amazon.com/AmazonECS/latest/developerguide/Welcome.html

enterprise.modulus.io

Code Happy

😃

Level up 

web:
 build: .
 command: python app.py
 ports:
   - "5000:5000"
 volumes:
   - .:/code
 links:
   - redis
 environment:
   - PYTHONUNBUFFERED=1
redis:
 image: redis:latest
 command: redis-server --appendonly yes
$: docker-compose up

http://blog.docker.com/2015/02/announcing-docker-compose/

Docker Compose

Immutable contianers

docker run --rm -v $(pwd):/usr/src/myapp -w /usr/src/myapp golang:1.4 go build hello.go

-rm : Go away

-v : Mounting

-w : Working Directory

docker run --rm -v $(pwd):/usr/src/myapp -w /usr/src/myapp node:0.12.2 npm install && npm test

Accurate testing .... 😎

http://container-solutions.com/2014/12/docker-computation-containers/

Docker vs. VM

What's Next..?

Security

http://blog.docker.com/2015/05/understanding-docker-security-and-best-practices/

Scheduling & Orchestration

https://www.digitalocean.com/community/tutorials/the-docker-ecosystem-scheduling-and-orchestration

Service Discovery

https://www.digitalocean.com/community/tutorials/the-docker-ecosystem-service-discovery-and-distributed-configuration-stores

Questions?