docker on Poeticoding

How to run a Docker Container

Thu, 21 Feb 2019 12:38:58 +0000

In this episode, after a quick intro to containers and images, we see how easy it is to run and connect to a containerised Nginx server. We then see how to stop, re-start and remove the container.

Create a High-Availability Kubernetes Cluster on AWS with Kops

Wed, 16 Jan 2019 14:58:56 +0000

This article has a bit more of DevOps flavour than the previous articles, focused more on Elixir. In this article I show how to easily run a multi-zone Kubernetes cluster on AWS, where we’ll deploy a Phoenix Chat application.

There are many ways to deploy a Kubernetes cluster on AWS (Amazon Web Services). At the moment, AWS offers EKS, Elastic Kubernetes Service, which helps us deploy and manage our Kubernetes clusters. It costs $0.20/hr, which is $144/month: that’s not cheap actually, especially if we want to run a small cluster. And it’s not just about the cost: I find EKS still too young, preferring kops over it.

Running Elixir in Docker Containers

Wed, 12 Dec 2018 14:15:00 +0000

One of the wonderful things about Docker Containers is that you can easily freeze your environment and application in a Docker Image, and deploy it in production without worrying about installing dependencies on your servers. It just works. This is also great for debugging. If something doesn’t work in production, you can run exactly the same image locally in matter of seconds. The features and advantages of docker obviously don’t stop here. In this article we see how to use Docker to run our development Elixir environment and to run multiple Elixir Nodes over a Docker bridge network.