Docker's LogoDocker's Logo

Docker is become an incredibly prevalent tool in the development and operations realms in recent months. Its combination of developer friendly configuration and simple operational management make it a very attractive prospect for companies and teams looking to adopt CI and CD practices.

In most cases, you'll see Docker used to deploy applications in much the same way as a zip file or virtual machine image. This is certainly the most common use case for Docker, but by no means the extent of its functionality.

In this post I'm going to discuss some of the more interesting problems we've used Docker to solve and why it serves as a great solution to them.

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Traefik is an application load balancer written in Go and designed to simplify the task of serving HTTP(S) services whose configuration changes on the fly. Traefik v1.1.0 was recently released with support for Docker Swarm and it works excellently.

In this post, we'll go through how one sets up their Swarm cluster to automatically expose its services through Traefik.

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Docker Swarm

in Operations

Docker Swarm is one of those interesting new technologies which has succeeded in shaking up people's preconceptions around what it means to run a scaleable cluster. In an environment where everyone seems to be building a cluster orchestrator, including some big names like Google's Kubernetes, HashiCorp's Nomad and Mesosphere's Marathon; Swarm has managed to burst through as one of the most attractive orchestration frameworks out there.

As a result of all this hype, it can be difficult to make a decision around whether Swarm is the right tool to use. As someone who has had extensive experience with running Swarm, Kubernetes, DC/OS (Marathon) and Rancher in production environments, I'll try to give you an unbiased view on the reasons you'd choose Swarm and some of the gotchas to be aware of.

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Benjamin Pannell

Currently working to keep one of the world's biggest entertainment franchises available.


Site Reliability Engineer


Dublin, Ireland