You have installed Docker, you know how to run containers, you have written Dockerfiles to build container images for your applications (or parts of your applications), and perhaps you’re even using Compose to describe your application stack as an assemblage of multiple containers.
But how do you go to production? What modifications are necessary in your code to allow it to run on a cluster? (Spoiler alert: very few, if any.) How does one set up such a cluster anyway? And how do we use it to deploy and scale applications with high-availability requirements? What about logging, metrics, and other production-related requirements?
Jérôme Petazzoni and AJ Bowen answer those questions using tools from the Docker ecosystem, with a strong focus on the native orchestration capabilities available since Docker Engine 1.12, aka “Swarm Mode.”
A similar tutorial was presented at OSCON 2016. This tutorial is a vastly updated version taking into account the new, native orchestration features of Docker 1.12 (released shortly after OSCON 2016) and diving deeper into the operational aspects of Docker in production.
Jérôme Petazzoni works at Docker, where he helps others to containerize all the things. Jérôme was part of the team that built, scaled, and operated the dotCloud PaaS before it became Docker. When annoyed he threatens to replace things with a very small shell script.
AJ Bowen is on a mission to containerize all the things and help others to do the same. In the past, AJ has done technical support, evangelism, and customer and developer advocacy at Gandi. Her other experience includes heavy involvement in the Occupy movement in Kansas City, where she discovered the delightful and complicated world of horizontal organization in groups of passionate people with wildly diverse political perspectives, and humanitarian work in Haiti. AJ doesn’t like being told what to do—or telling others what to do—and is on a constant mission to eliminate unnecessary hierarchy.
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