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Kubernetes The Hard Way Explained – Chapter 2

Kelsey Hightower’s tutorial is the goto place for wannabe Kubernetes administrators who want to learn the ins and outs of the platform. With the CNCF’s official Kubernetes Certified Administrator programme out recently we can only expect this great resource to gain even more attention. I used KTHW a lot when I was learning K8S and prepping for the CNCF exam. This blog post is about stuff [...]
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Kubernetes The Hard Way Explained – Chapter 1

Kelsey Hightower’s tutorial is the goto place for wannabe Kubernetes administrators who want to learn the ins and outs of the platform. With the CNCF’s official Kubernetes Certified Administrator programme out today we can only expect this great resource to gain even more attention. I used KTHW a lot when I was learning K8S and prepping for the CNCF exam. This blog post is about stuff that [...]
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Becoming a Kubernetes Certified Service Provider

Several of us signed up for the Beta of the Certified Kubernetes Administrator (CKA) exam. Container Solutions participates in the Cloud Native Computing Foundation (CNCF) and our CNCF ambassador Michael Mueller was involved in the creation of the exam. Two of us have already successfully completed this exam, and once the third person passed the exam, we will apply to become a Kubernetes [...]
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Kubernetes on AWS… Cool Your Jets

When AWS joined the CNCF everyone got so excited for hosted Kubernetes, and the clickbait articles were produced en masse.  As much as I would love an AWS managed K8s, I am not holding my breath. I have a couple reasons for these reservations. The CNCF is not Kubernetes Kubernetes is definitely a high profile tool in the CNCF, but it is not synonymous with the CNCF.  A quick perusal of their [...]

Hacking it with Microsoft

Recently I had the opportunity to participate in a hackathon organized by Microsoft with a colleague of mine. The format of this hackathon found us partnering up with developers from Microsoft, in this case Alessandro and David, who were fantastic help during the course of the hackathon. The purpose of this hackathon was to help developers familiarize themselves with Microsoft Azure, while at the [...]

Working with Habitat as a cloud native developer, part 1

In the last two months, I've worked together with Chef (the company) to evaluate Habitat from a cloud native developer perspective. This is the first blog in a series of three where I'll share my experiences. The other two blogs will be about how to run the Habitat supervisor on top of Kubernetes, and how to create a Highly Available Redis cluster with automatic failover on top of [...]
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Monitoring Kubernetes with DataDog

Monitoring is a crucial part of any production application, and it’s importance is increasing as we move towards cloud native. For all the benefits of distributed, microservice applications, there are challenges which come along as well. The complexity of the system has increased considerably. The number of pieces involved (applications, datastores, services, etc) has multiplied, and they are [...]
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Kubernetes Quick Tip: Whitelisting source IP with Ingress in Kubertenes

If you are using Ingress on your Kubernetes cluster it is possible to restrict access to your application based on dedicated IP addresses. One possible use case would be that you have a development setup and don't want to make all the fancy new features available to everyone, especially competitors. In such cases, IP whitelisting to restrict access can be used .This can be done with specifying [...]

The .NET experience with microservices (.NET Core/Docker/Kubernetes/WeaveNet/Azure)

The .NET experience with microservices (.NET Core/Docker/Kubernetes/WeaveNet/Azure) A few of our recent posts featured WeaveWorks’ Sock Shop demo application - an educational project that demonstrates how to build a complex microservice application that not only looks good, but also does something useful. The educational value of the application lies in its architecture. It is unusual to [...]

Continuous Integration of deployment of micro-services to different platforms

In this blog post, I describe how we created DeployDocs to improve the continuous integration of the micro-services in the Socks Shop and the platforms it can be deployed to. Background Weave's Socks Shop is a reference micro-service application, to which Container Solutions has contributed quite a bit. The shop can be deployed on a number of platforms, including your local machine via [...]
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Monitoring a microservice application with CoScale on Kubernetes

Monitoring microservice systems has been a hot topic at Container Solutions for some time. Combined with our recent interest in Kubernetes we set out to give the new CoScale monitoring solution a try. CoScale is a hosted and on-premise monitoring solution with native support for Docker and Kubernetes. In the case of Kubernetes, this means it can talk to the Kubernetes master server and measure [...]
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From Pet to Cattle – Running Sonar on Kubernetes

Recently we ran into a bit of trouble with our pet CI server. It was being used as a Jenkins server and a Postgres database and Sonar was also running on it but it wasn't evident as it was just a manually ran docker compose setup on the machine. Sure enough someone turned off the server not knowing that Sonar is also running there. As Sonar is part of our minimesos build our builds stopped [...]

Trying out Kubernetes

In this post I'll describe what the steps are to achieve a simple way to get Kubernetes running. A single node Kubernetes setup can be convenient for kicking the tires, testing and local development.   Prerequisites You will need to have some background knowledge about the concepts behind Kubernetes, so you'll know what I'm referring to when I write about nodes, pods, replication [...]

Why Kubernetes Makes Sense

As a service provider in the programmable infrastructure space, we at Container Solutions are constantly investigating new tools and technologies to help our clients to deploy and maintain large and complex systems. Most of our work is related to containers and specifically to Docker, and over time we have experimented with multiple tools to manage containers on a large scale - most notably [...]