“Docker, Docker, Docker.” It’s a phrase we hear often, but what are containers, what can they be used for, and why should you know more about them? In this session, Grace (Puppet) and Tricia (AppDynamics) will introduce attendees to Docker and help them build and deploy their first container with Puppet. They will leverage the docker_image_build module from the Puppet Forge and take attendees through the proper workflow for coupling Docker and Puppet together. The session will focus on how to use some of the newest Docker features, such as multi-stage build files and password stores within Docker so you can pass "secrets" to a swarm for login credentials. The goal is to provide newcomers with a working proficiency of how to get started deploying containers using Puppet as their automation tool.

2. What’s in the box?!: Leveraging
Puppet Enterprise and Docker
Grace Andrews + Tricia Radcliffe
Sales Engineer
Puppet
Sales Engineer
AppDynamics

3. Agenda
What is Puppet => Automating Infrastructure for CI/CD
Why use Puppet
What is Docker => Moving to Containers
Why use Docker
How do we Build => Ship => Run from Puppet
Puppet Docker Build
Puppet Docker Run
QUESTIONS

4. The Puppet Show
Let’s talk about automation!

5. Automate for speed, reliability and security
Define with a common
language
Gain situational
awareness
Orchestrate change
intelligently
Ensure security &
compliance
What’s needed to deliver and operate modern software simply, at scale and securely
Across devices, through the stack

6. Puppet Master
Windows
Server Linux
Server
Network
Device
Puppet Architecture

7. How Puppet Works
1. Define your desired state
2. Simulate configuration4. Report
3. Enforce configuration
service { ‘ntpd’:
ensure => running,
enable => true,
subscribe => File[‘/etc/ntp.conf’],
}

8. 1. Read the Puppet code and
compile a catalog of every
configuration and the
relationships between them
2. Deliver the catalog to the node
3. Based on the catalog, determine
the order in which to enforce the
desired state
4. Report on what changes, if any,
took place
How Puppet Works

9. Anatomy of a Run
2.
Catalog
3.
Report
1.
Facts

10. Packaging + out-of-the-box scalability
User interface
Open Source Puppet
Role-based
access control
Visualization
& reporting
Orchestration
Supported modules
Supported platform
Service Training Support
Integrations
Puppet Enterprise Overview

11. Docker Time
Let’s talk about containers!

12. Docker Architecture

13. What is a Container?
● Standardized packaging for
software and dependencies
● Isolate apps from each other
● Share the same OS Kernel
● Works for all major Linux
distributions
● Containers native to Windows
Server 2016

14. Containers are not VMs
● Isolated namespaces
● Shared resources
● Quick to boot
● Smaller footprint
CONTAINERS
● Isolated resources
● Full OS + App
● Longer to boot
● Larger footprint
VMs

15. Different but not mutually exclusive

16. Some Docker Vocabulary
Docker Image
The basis of a Docker container. Represents a full application
Docker Container
The standard unit in which the application service resides and executes
Docker Engine
Creates, ships and runs Docker containers deployable on a physical or virtual, host
locally, in a datacenter or cloud service provider
Registry Service (Docker Hub or Docker Trusted Registry)
Cloud or server based storage and distribution service for your images

17. Docker Community Edition
Ideal for developers and small teams.
Supported on Desktops, Cloud, Open Source
OS
•The latest Docker version with integrated tooling to
build, test and run container apps
•Available for free with software maintenance for the
latest shipping version
•Integrated and optimized for developer desktops,
Linux servers and clouds.

18. Docker Enterprise Overview

19. Build, Ship, Run Workflow
Developers IT Operations
BUILD
Development Environments
SHIP
Create & Store Images
RUN
Deploy, Manage, Scale

20. Dockerfiles
What is a Dockerfile?
• Instructions on how to build
a Docker image
• Looks very similar to
“native” commands
• With image_build module
you do not have to know
how to create a Dockerfile

21. Foraging in the Forge
puppetlabs/docker_platform
● installs, configures, and
manages the Docker daemon
and Docker containers.
puppetlabs/image_build
● Builds Docker images from
current puppet code.
Puppetconf Repo
● Module that has the examples
we used to build a docker image
and puppet files to run docker
containers.
Modules to use
**module dependencies will be downloaded automatically IF you download from the CLI

22. What’s Happening

23. DEMO

24. Docker Commands
# list images available on Docker Host
docker image ls
# show running containers on Docker Host
docker container ps
# run a container
docker run –d –p 8069:80 --name puppet-nginx tchung02/puppet-nginx
# stop a container
docker container stop <container id>
# upload image to Docker Hub
docker push tchung02/puppet-nginx:3.0

25. RECAP
1. Set Up Puppet Deployment
a. Stand up master + agents
b. download modules
c. clone Puppetconf repo.
d. puppetlabs/image_build
e. Builds Docker images from
current puppet code.
f. Puppetconf Repo
g. Module that deploys a container
running a ….
What did we do?
**module dependencies will be downloaded automatically IF you download from the CLI

26. Honorable Mentions
Scott Coulton => Docker Capt. (AUS), Software Eng. @Puppet
‘Zero to Kubernetes’ => Thu., Oct 12, 3:15pm
Scott’s Blog Post => https://scottydoesntknow.io/puppet-loves-docker/
Gert Drapers => VP Engineering Cloud, Containers, Discovery & Insights @ Puppet
‘State of Union: Containers at Puppet’ => Thu., Oct 12, 11:45am
Jeremy Adams => 2015 Docker Demo; Puppet Senior SE Manager
Mike G. Coleman => Docker 101 Catweb Repo
Rilindo F. => Linux Academy How-To
Jesus Garcia => Puppet City
Sean Techavatnavisal => Puppet SE
Mark Wilkerson => Software Engineer @ Twitch/Amazon