deployment

Docker Clustering Approaches

Architecture, Docker, Swarm / / , , , , ,

Most enterprises have a structured release management process that allows phased deployment between multiple environments including development, test, model (stage or acceptance), and production.  https://en.wikipedia.org/wiki/Deployment_environment.

With Docker Enterprise Swarm you can generally setup these environments in one of the following ways: Single Cluster, Multi-Env Cluster, Geo-Single Clusters, and Geo-Multi-Env Cluster.  I will explain these different approaches and help you determine when each approach might be useful in your enterprise.  Of course, there is a myriad of variations on each of these that you could employ to suit your own needs.
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Interlock for Docker Swarm

Docker, Swarm / / , , , , , , ,

In early 2018 Docker made an announcement of the release of its newest Docker Enterprise 2.0 product.  This newest release provides a significant advancement in the Docker platform in the form of a choice between Swarm and/or Kubernetes orchestration. But that’s not what i want to talk about.

Layer 7 Routing

Another great addition to the platform is the replacement of the HTTP Routing Mesh, known as HRM, with a new Layer 7 routing and load balancing. This latest enhancement is built upon the new Interlock 2.0 architecture which provides a highly scalable and highly available routing solution for Swarm.  Interlock provides the same functionality as HRM but also includes 2 new features: 1) path based routing and 2) SSL termination.
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Zero Downtime Deployment with Docker Rolling Updates

3 Comments / Docker / / , , , ,
When configuring a Docker environment before a big rollout to production, it’s important to understand what “zero downtime deployment” really means and if it is what it claims. This requires an understanding of the intricacies of how a rolling update works.
So let’s look at what “zero downtime deployment” actually means. Most people don’t want to specify and arrange a maintenance window and have to kick people off just to roll out a new version of an application. This is a problem that Docker Enterprise Edition solves by providing an approach referred to as “rolling updates.”
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