Blog Posts with Tag Kubernetes

Most applications contain settings which differ from environment to environment, or just need to be able to have behavior changed without making changes to the code. Configuration allows applications to do this. Thankfully, Kubernetes provides a simple way to store configuration values in a cluster and reference them in a Pod specification. In this blog post, I'll show some simple examples of using ConfigMaps in Kubernetes. What Are ConfigMaps ConfigMaps are resources in…

In my previous posts regarding Kubernetes, I've written primarily about running containers in Pods on Kubernetes. Pods provide a basic building block in kubernetes that allows to execute containers within a Kubernetes cluster. In future posts, I'm going to move on to other concepts that can be built off of Pods within Kubernetes. ReplicaSets and Deployments will build off that base to help run scalable workloads. Like Pods, there is a lot to discuss with the topic, this first…

In my previous post on Pods, I gave a simple example running a container in Kubernetes. In this post, I will be discussing how to check pod health and keep them running with probes. Probes on Pods Even the best software fails from time to time. Be it networking issues, a software bug, or unrelated 3rd party dependencies. Being able to react to these failures and ensure the appropriate action occurs is critical to maintaining an overall healthy software system. Kubernetes has…

I've been working on gaining a deeper understanding of Kubernetes and refreshing my knowledge on the topic. I'll be writing several posts over the remainder of the year on Kubernetes. In my first post I'm going to talk about the basics of running a container in Kubernetes with Docker Desktop. Enabling Kubernetes in Docker Desktop It's simple. Go to the settings, select the Kubernetes tab on the left, and in the settings click the checkbox to "Enable Kubernetes". Hit the apply…

In a previous post, I talked in brief about containers, and their benefits. In this post I want to talk in brief about container orchestration before I get into more in depth technical topics on Kubernetes. Container Orchestration Container orchestration is a way to manage running containers and the resources necessary for the containers. Container orchestration also manages a cluster of machines and allocate various I/O resources. Orchestrators A few years ago, there were…

I've been a fan of Docker Desktop for years. Docker compose was my go to for developing multi-container applications locally. However, while it was polished there was always a gap between building docker compose files and then running it in Kubernetes. Docker had done things over the years to simplify this, but I wanted to automate more of my local development experience. The recent changes to Docker Desktop's Licensing model started me on a search to see what other tools are…