Infinite scalable systems with Docker, Docker Machine, and Docker Swarm

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Infinite Scalable Systems with
Docker
Huseyin BABAL
Full-Stack Software Engineer @ GittiGidiyor

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Docker

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What is Docker
Docker lets you to package application with its dependencies like code,
runtime, system libraries, etc. inside one container

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VM vs Docker
Infrastructure Infrastructure
Host OS OS
Hypervisor Docker Engine
Guest OS Guest OS Guest OS
bins/libs bins/libs bins/libs
app1 app2 app3
bins/libs bins/libs bins/libs
app1 app2 app3

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Docker Machine

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What is Docker Machine?
Docker Machine lets you to create Docker host
and specific client to connect Docker on local
computer, cloud providers, even in your own
data center.

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Creating Docker Machine
docker-machine create -d virtualbox default

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Docker Swarm

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What is Docker Swarm?
Native clustering for Docker

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Howto Create Swarm?
SID=docker run swarm create
$SID will be used on clustering

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Master Create
docker-machine create
-d virtualbox
--swarm
--swarm-master
--swarm-discovery token://$SID
swarm-master

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Agent Create
docker-machine create
-d virtualbox
--swarm
--swarm-discovery token://$SID
swarm-agent-00

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Swarm Master Process

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Swarm Agent Process

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Swarm Relay Network

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Architectural Design

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Components
docker-gen Image
Nginx
NodeJS Application

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Docker Project

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docker-gen Image
Generates files from docker container metadata
● Centralized Logging
● Log Rotation
● Reverse Proxy Configs
● Service Discovery

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How to Build?
docker build -t docker-gen ./docker-gen

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How to Run?
docker run -d --restart=always --name=docker-gen
--env=affinity:image==docker-gen:latest
--env=DOCKER_HOST=tcp://192.168.99.103:3376 docker-gen

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Nginx

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How to Run?
docker run -d --restart=always --name=nginx -p 80:80 --
volumes-from=docker-gen nginx

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http {
upstream api.nodejs.com {
server 192.168.99.100:5001;
server 192.168.99.100:5002;
}
server {
listen 80;
location / {
proxy_pass http://api.nodejs.com;
}
}
}

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NodeJS Application

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How to Run?
docker run -d --restart=always -p 3000 --name hello-
express-1 -P --env VHOST=api.nodejs.com
huseyinbabal/express-hello

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Load
Balancer
swarm-agent-01
swarm-agent-02
swarm-master
Docker
Gen

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Show Time!
You can clone project here

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Thank you!
Questions?Questions?
@huseyinbabal
+HüseyinBABAL
http://huseyinbabal.net