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How to automatically scale Kubernetes with Horizontal Pod Autoscaling

2018 March 6 / / 0 Comments

Scale is a critical part of how we develop applications in today’s world of infrastructure. Now, containers and container orchestration like Docker and Kubernetes make it easier to think about scale. One of the “magical” things about The potential of Kubernetes is fully realized when you have a sudden increase in load, your infrastructure scales up and grows to accommodate. How does this work? With Horizontal Pod Autoscaling, Kubernetes adds more pods when you have more load and drops them once things return to normal.

This article covers Horizontal Pod Autoscaling, what it is, and how to try it out with the Kubernetes guestbook example. By the end of this article, you will…

  • Understand what Horizontal Pod Autoscaling (HPA) is
  • Be able to create an HPA in Kubernetes
  • Create an HPA for the Guestbook and watch it work with Siege

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Sign at the line: Deploying an app to CoreOS Tectonic

2017 August 4 / / 0 Comments

This is a short series to introduce Kubernetes, what it does, and how to experiment with it on Fedora. This is a beginner-oriented series to help introduce some higher level concepts and give examples of using it on Fedora. In the first post, we covered key concepts in Kubernetes. The second post showed how to build a single-node Kubernetes deployment on your own computer. The last post and this post build on top of the Fedora Magazine series. The third post introduced how to deploy CoreOS Tectonic to Amazon Web Services (AWS). This fourth post teaches how to deploy a simple web application to your Tectonic installation.

Welcome back to the Kubernetes and Fedora series. Each week, we build on the previous articles in the series to help introduce you to using Kubernetes. This article picks up from where we left off last when you installed Tectonic to Amazon Web Services (AWS). By the end of this article, you will…

  • Start up Redis master and slave pods
  • Start a front-end pod that interacts with the Redis pods
  • Deploy a simple web app for all of your friends to leave you messages

Compared to previous articles, this article will be a little more hands-on. Also like before, this is based off an excellent tutorial in the upstream Kubernetes documentation. Let’s get started!

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Deploy CoreOS Tectonic to Amazon Web Services (AWS)

2017 July 28 / / 1 Comment

This is a short series to introduce Kubernetes, what it does, and how to experiment with it on Fedora. This is a beginner-oriented series to help introduce some higher level concepts and give examples of using it on Fedora. In the first post, we covered key concepts in Kubernetes. The second post showed how to build a single-node Kubernetes deployment on your own computer. This post builds on top of the Fedora Magazine series by showing how to deploy CoreOS Tectonic to Amazon Web Services (AWS).

Welcome back to the Kubernetes and Fedora series. Each week, we build on the previous articles in the series to help introduce you to using Kubernetes. This article takes off from running Kubernetes on your own hardware and moves us one step closer to the cloud. By the end of this article, you will…

  • Understand what CoreOS Tectonic is
  • Set up Amazon Web Services (AWS) for Tectonic
  • Deploy Tectonic to AWS

This article is also based off of the excellent tutorial provided in the CoreOS documentation. Let’s get started!

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Clustered computing on Fedora with Minikube

Clustered computing on Fedora with Minikube

2017 July 7 / / 0 Comments

This article was originally published on the Fedora Magazine.

This is a short series to introduce Kubernetes, what it does, and how to experiment with it on Fedora. This is a beginner-oriented series to help introduce some higher level concepts and give examples of using it on Fedora. In the first post, we covered key concepts in Kubernetes. This second post shows you how to build a single-node Kubernetes deployment on your own computer.

Once you have a better understanding of what the key concepts and terminology in Kubernetes are, getting started is easier. Like many programming tutorials, this tutorial shows you how to build a “Hello World” application and deploy it locally on your computer using Kubernetes. This is a simple tutorial because there aren’t multiple nodes to work with. Instead, the only device we’re using is a single node (a.k.a. your computer). By the end, you’ll see how to deploy a Node.js application into a Kubernetes pod and manage it with a deployment on Fedora.

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Introduction to Kubernetes (k8s)

Introduction to Kubernetes with Fedora

2017 July 3 / / 2 Comments

This article was originally published on the Fedora Magazine.

This article is part of a short series that introduces Kubernetes. This beginner-oriented series covers some higher level concepts and gives examples of using Kubernetes on Fedora.

The information technology world changes daily, and the demands of building scalable infrastructure become more important. Containers aren’t anything new these days, and have various uses and implementations. But what about building scalable, containerized applications? By itself, Docker and other tools don’t quite cut it, as far as building the infrastructure to support containers. How do you deploy, scale, and manage containerized applications in your infrastructure? This is where tools such as Kubernetes comes in. Kubernetes is an open source system that automates deployment, scaling, and management of containerized applications. Kubernetes was originally developed by Google before being donated to the Cloud Native Computing Foundation, a project of the Linux Foundation. This article gives a quick precursor to what Kubernetes is and what some of the buzzwords really mean.

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