New Relic has been using Docker in production for two years, and we know the pro's and cons of using containers. From the SF New Relic User Group January 2016.

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Confidential ©2008-15 New Relic, Inc. All rights reserved.
Docker: Light and Dark!
Tori Wieldt !
Developer Advocate!
@ToriWieldt!

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Confidential ©2008-15 New Relic, Inc. All rights reserved.
§ OS-level virtualization
§ NOT Microservices
(but they go together well)
§ NOT the cloud
(but is often run there)
§ New Relic has been using Docker in
production for two years
Docker

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Confidential ©2008-15 New Relic, Inc. All rights reserved.
Product Overview!

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Confidential ©2008-15 New Relic, Inc. All rights reserved.
What can containers provide?
§ Faster: code to production
§ Better: manage in production
§ Better: developer productivity
§ Cheaper: better resource utilization
§ “Docker gets you to ask the right questions”
Docker : The Light

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Speed
§ “It worked on my laptop” goes away
§ Standing up a dev environment takes much less time
§ Launching a container 6x faster than a VM
Reliability
§ Forces you to know every dependency
§ Identical running containers in case of failure
Better Utilization
§ 4-6x better server util than VMs
Docker : The Light

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Confidential ©2008-15 New Relic, Inc. All rights reserved.
Product Overview!

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It Takes Time
§ Dependencies!
§ All those env variables
Pioneering Days
§ Docker is a moving Target
§ Docs are written for greenfield
Had to Learn
§ Containers will fail
§ Noisy neighbors issues
§ Have you set a memory limit?
Docker : The Dark

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Not Ideal State (yet)
§ Takes time to get dev environment set up
§ Not self-serve for devs to deploy
§ Still have to create Runbooks
§ Security – processes can escape!
Docker : The Dark

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