Ok great! Now that we have established that all requests for all clients in some form or the other hits ClusterIP, we just need to understand how the request finally get routed to the appropriate pod. In the above diagram, which one of those three green dots gets the request? …

Let’s step back a little. When you are working with Docker Swarm or simply using docker-compose one notices how the world is so beautiful. When you do a stack deploy or docker-compose up the DNS names are by default the name of your containers mentioned in your yml files. 😃 …

How your requests are routed to the pod is the question we are going to solve now. Perhaps, instead of “how” maybe we should ask “who” first. Who is actually trying to connect to your services? And since that question would really help us answering the one and only question…

The above is a basic representation of how scaling works with Kubernetes. When a person executes the scale command, they are essentially updating a deployment spec. Then the deployment controller updates it’s replica set spec. And the replica set changes it pod count to 2 — (it created the new pod). This triggers and control plane now decides which nodes the pods (both the new and the existing one) need to exist in.

I am currently learning stuff about Kubernetes. And as I was doing my assignments and learning how to create a deployment I stumbled upon something awkward. When you intend to create a deployment using this command: kubectl run my-apache --image httpd the expectation is to create something called Deployment, then…

As we continue to investigate the workings of Kubernetes one cannot get away from the need of understanding how a POD is created. In this tutorial, we will go through a set of things that need to happen before a Pod created. …

Kubernetes (or popularly known as K8), is a portable, extensible, open-source platform for managing containerized workloads and services. In other words, how to load balance requests/tasks of your services and, how to manage those very services — whether it be deploying them with zero downtime or perhaps start the service…

I had autocompletion scripts written in bash. After my mac upgrade, they don’t work in ZSH. I had been trying to understand the best way to migrate them. I spent a couple days in their documentation to understand bits and pieces so that I could migrate my existing scripts. During…

Today I came across a new Scala library for generating AVRO schema called avros4s. One of the cool things I found was it’s capability to manage recursive schemas. The library brings support of using our lovely case classes for generation of AVRO schema. Before I found out avro4s I was…