This document provides an agenda and overview of Docker Machine and Docker Swarm. It discusses how Docker Machine allows managing Docker hosts on various platforms and distributions. It then explains how Docker Swarm exposes multiple Docker engines as a single virtual engine with built-in service discovery and scheduling. The document demonstrates how to set up a Docker Swarm cluster using the hosted discovery service and covers Swarm scheduling strategies, constraints, and container affinities.

1. Docker Machine & Swarm
Gustavo Dacunda – Guillermo Lucero

2. • Docker Machine
• Providers & OS
• Demo
• Container manageability today
• Manageability with Docker Swarm
• Swarm in a nutshell
• Docker Swarm architecture
• Setup using the hosted discovery service
• Swarm Scheduler
• Constraints
• Affinities
• Demo
Agenda

3. Docker Machine
 Docker Client
 Docker Machine
 Docker Compose (Mac only)
 Docker Kitematic
 VirtualBoxDocker Toolbox
$ docker-machine create --driver [Provider] dev

4. Remote Provider
Local Provider
Providers & Distributions
Boot2Docker 1.5+
Ubuntu 12.04+
RancherOS 0.3+
Debian 8.0+
RedHat Enterprise Linux 7.0+
CentOS 7+
Fedora 21+

5. Today
tcp://host:2375 tcp://host:2375tcp://host:2375

6. With Docker Swarm
......
Swarm Manager
tcp://host:2375
tcp://host:2375 tcp://host:2375tcp://host:2375

7. Swarm in a nutshell
 Exposes several Docker Engines as a single virtual Engine
 Serves the standard Docker API
 Extremely easy to get started
 Batteries included but swappable

8. Swarm Manager
Token service
tcp://host:2375
Docker Swarm Architecture
......
tcp://host:2375 tcp://host:2375 tcp://host:2375
Service Discovery Scheduler

9. Create a cluster
$ swarm create
Add nodes to a cluster
$ swarm join –add=<node_ip> token://<token>
Start Swarm
$ swarm manage –addr=<swarm_ip> token://<token>
Or you can use your own etcd, zookeeper or consul
Setup using the hosted discovery service

10. Swarm Scheduler
Scheduler strategies
 Spread
 Binpack
 Random
Scheduler filters
 Constraint
 Affinity
 Port
 Dependency
 Health

11. Constraints
Standard constraints induced from Docker info
docker run –e "constraint:operatingsystem==*fedora*"
docker run –e "constraint:storagedriver==*aufs*"
Custom constraints with host labels
docker –d –label "region==us-east"
docker run –e "constraint:region==us-east"
Pin a container to a specific host
docker run –e "constraint:node==Ubuntu-2"

12. Containers affinities
docker run –name web nginx
docker run –e "affinity:container==web" logger
Containers Anti-affinities
docker run –name redis-master redis
docker run –name redis-slave –e "affinity:container!=redis*"
Images affinities
docker run –e "affinity:image==redis" redis
Affinities

13. Demo