Simply speaking ingress is a collection of routing rules, and ingress controller is the component that implements those rules in Kubernetes cluster. It is not available in any Kubernetes releases prior to 1.1. I guess it is the reason that why OpenShift developed Router. This is a not so nice diagram, but I think it … Continue reading Understanding Ingress in Kubernetes
In my previous post, I have shown you how to create a Kubernetes cluster on AWS with kops. And this article I will dig deeper in to the Kubernetes HA (High-Availability) that is built by kops. Here is a diagram that shows you the high level HA design of the cluster that I built. Here … Continue reading High Availability in Kubernetes cluster built by kops
It was year 2015 when I first time installed Kubernetes. Back then, installing Kubernetes is not a simple task like what it is Today. Nowadays, there are a few handy tools that you can choose, eg. kops, heptio. Additionally, you can also choose managed Kubernetes, e.g GKE, AKS, EKS and more. I recently used kops … Continue reading Install Kubernetes on AWS with kops
Continue with part one, I will show you the details of the CICD scripts and also the Bamboo plan. Lets start with the CICD scripts, it can be found in my OpenShift-CICD repository on GitHub. The key parts are two OpenShift configuration files: build.yaml and deploy.yaml. The script is to make a copy from the template … Continue reading CICD on OpenShift Part Two
I summarised a list of FAQ about the memory request and limit in Kubernetes. Also I have a real example down the bottom. 1) What if Container exceed memory request? Totally fine, a Container can exceed its memory request if the Node has memory available. 2) What if Container exceed memory limit? Thats dangerous, as … Continue reading The myth of memory requests and limits in Kubernetes
Jackie Chen's IT Workshop 