What are the challenges to use Docker? Find out what we learned at New Relic software. Presented at Velocity 2016 Santa Clara (at the New Relic booth).

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A Skeptic’s Guide to Docker
Tori Wieldt, Developer Advocate, New Relic
@ToriWieldt

2. PresenterName,TitleandorDate
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Confidential ©2008-15 New Relic, Inc. All rights reserved.
New Relic’s Journey
Challenges with Docker
Basics
Docker is Not
Docker in Operation
What’s Happening With Your Containers?
AGENDA

4. Ruby Frontend + Java Backend
1) The Ruby Monolith
2) The Duolith
3) Services Architecture
200+ Services
Docker in Prod 2014

5. 5
• Based on Selenium
• Each script runs in its
own container
• Performance
• Security
A crash test dummy
for your software.

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• Docker is a Moving Target
• Only the BOLD run the current version
• CaaS announced this week
• Boot2Docker/ Docker ToolBox/ Docker for Mac(beta)
blog The Modern Developer Workstation on MacOS with Docker
• Docs are Written for Greenfield development
• No Runbook for Migrating existing apps
• Noisy Neighbors
CHALLENGES

7.  A Cloud Platform (AWS, OpenStack)
 Configuration Management (Chef, Puppet)
 Testing (Vagrant)
 Deployment Tool (pre-Swarm)
 Built Our Own: Centurion
 The Build Ships Containers to Docker Registry
 Centurion Sends Containers to Docker Fleet
 GitHub: Newrelic/Centurion
Docker is Not…
Luc Viatour / www.Lucnix.be

8. New Skills and Tools
 For Ops
 Library of Base Images
 Solid Process for Building and Shipping
 Good Internal Docs for Devs
 For Devs
 Learn the Tools
 Let Go of the Notion of a Large and Persistent Filesystem
 Make your code multithreaded
 Take Ownership of the App’s Dependencies
 App Dependencies
What’s New?

9. How Do You Know What’s
Happening With Your
Containers?

10. 10Confidential ©2008-15 New Relic, Inc. All
rights reserved.
 Docker Stats Command & Docker API
Looking At Containers

11.  Comprehensive overview
 CPU
 physical memory
 network activity
 disk I/O utilization and
capacity
Server Monitoring
from the app
perspective.

12. Server Monitoring
from the app
perspective.
• Grouped by Docker Image
• Troubleshoot Quickly
• What Does Your
Application Cost
to Run?

13. Learn More
 “Hello World” Tutorial at Docker.com
 Docker In Production book
 NewRelic.com/docker
 Docker for Java Tutorial
 github.com/docker/community/tree/master/tutorials/java
 Infographic: The Life and Times of a Docker Container

14. Thank You
Tori Wieldt
ToriWieldt@newrelic.com
@ToriWieldt
Confidential ©2008-15 New Relic, Inc. All rights