Monthly Archives: January 2017

Blue-Green Deployments With Docker Services Running Inside a Swarm Cluster

I am continuously getting questions about blue-green releases inside a Docker Swarm cluster. Viktor, in your The DevOps 2.0 Toolkit book you told us to use blue-green deployment. How do we do it with services running inside a Swarm cluster? My answer is usually something along the following lines. With the old Swarm, blue-green releases were easier than rolling updates (neither were supported out of the box). Now we got rolling updates. Use them! The reaction to that is often that we still want blue-green releases.

This post is my brainstorming on this subject. I did not write it as a result of some deep thinking. There is no great wisdom in it. I just wrote what was passing through my mind while I was trying to answer another one of the emails containing blue-green deployment questions. What follows might not make much sense. Don’t be harsh on me.
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Using Docker Stack And Compose YAML Files To Deploy Swarm Services

Bells are ringing! Docker v1.13 is out!

The most common question I receive during my Docker-related talks and workshops is usually related to Swarm and Compose.

Someone: How can I use Docker Compose with Docker Swarm?

Me: You can’t! You can convert your Compose files into a Bundle that does not support all Swarm features. If you want to use Swarm to its fullest, be prepared for docker service create commands that contain a never ending list of arguments.
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It’s alive! The DevOps 2.1 Toolkit: Docker Swarm Is Finished

The DevOps 2.1 Toolkit: Docker SwarmI published The DevOps 2.1 Toolkit: Docker Swarm on LeanPub early. I think that only around 20% was written when it went public. That allowed you to get early access to the material, and me to get your feedback. The result is fantastic. Many send me their notes, reported bugs, proposed suggestions for improvements, recommended tools and processes that should be explored, and so on.
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