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Kubernetes is an open source system for automating deployment, scaling, and management of containerized applications.
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Kubernetes github.com

K9s makes K8s look gooood ✨

We’ve linked K9s up in the past, but I’ve been playing with it today and I just had to share it again. Gerhard has us up and running on LKE (more on that coming to the blog and podcast soon) so I’ve had a chance to kick the tires a bit.

I have no idea how any of this magic works, but I do know that I like it and I’m excited to learn more. Here’s a screen grab of its Pulses feature, which gives you an overview of your entire cluster.

K9s makes K8s look gooood ✨

Kubernetes github.com

Fully-baked, collaborative development environments in your browser

Tightly integrated with GitLab, GitHub, and Bitbucket, Gitpod automatically and continuously prebuilds dev environments for all your branches. As a result, team members can instantly start coding with fresh, ephemeral and fully-compiled dev environments - no matter if you are building a new feature, want to fix a bug or do a code review.

There’s a SaaS offering that’s free for open source or you can self-host it if you prefer.

Fully-baked, collaborative development environments in your browser

Michael Terhar brownfield.dev

Building real applications from my iPad

Michel Terhar:

In the search for a comfy and portable developer experience, I’ve made a lot of compromises in the past. The experience has gotten significantly better recently thanks to VS Code and Kubernetes. This workflow also does a good job for underpowered laptops or when working with lots of different and conflicting versions of python or ruby.

This is a solid, balanced piece that doesn’t overly sell the workflow and walks you through setting it up for yourself.

Kubernetes github.com

Kubernetes multi-cluster deployment automation service

Application deployment and management should be automated, auditable, and easy to understand and that’s what beetle tries to achieve in a simple manner. Beetle automates the deployment and rollback of your applications in a multi-cluster, multi-namespaces kubernetes environments. Easy to integrate with through API endpoints & webhooks to fit a variety of workflows.

Kubernetes multi-cluster deployment automation service

Kubernetes learnk8s.io

Validating Kubernetes YAML for best practice and policies

This article compares six static tools to validate and score Kubernetes YAML files for best practices and compliance.

One of the challenges with YAML is that it’s rather hard to express constraints or relationships between manifest files.

What if you wish to check that all images deployed into the cluster are pulled from a trusted registry?

How can you prevent Deployments that don’t have PodDisruptionBudgets from being submitted to the cluster?

Luca Popesco port8080.sh

What I learned working with a cheap Kubernetes cluster

I was recently involved in an interesting project. Deploying a full production and development environment on a very budget-constrained Kubernetes cluster, managed through GKE. A big departure from my usual, where I have nearly unlimited budget for my cluster. The issues I ran into, and the solutions for them, were actually the inspiration to start this blog, just so I could write this post.

This is a great reason to start a new blog 👏

Kubernetes github.com

What happens when ... Kubernetes edition

Remember that README that answers the age old question:

What happens when you type google.com into your browser’s address box and press enter?

Well, the format is back with a Kubernetes focus, this time answering:

Imagine I want to deploy nginx to a Kubernetes cluster. I’d probably type something like this in my terminal:

kubectl run nginx --image=nginx --replicas=3

and hit enter. After a few seconds, I should see three nginx pods spread across all my worker nodes. It works like magic, and that’s great! But what’s really going on under the hood?

Asad Faizi cloudplex.io

The hidden costs of Kubernetes and Cloud Native

Kubernetes has won and the cloud is a moving target. But, one thing that often gets lost in the mix with all the Cloud Native talk is the productivity costs associated with keeping up.

In the US alone, over 70% of enterprises have adopted or are currently adopting cloud-native architecture, causing a surge in developers who are trying to learn the stack.

It’s called the “cutting edge” for a reason…

Staying on the cutting edge…one critical area of productivity loss is keeping up with all the changing technologies.

Cloud-native architecture is still being developed and learning the latest technologies is a moving target. While at the same time, most computer science and software engineering programs don’t delve into the heart of these technologies. At best, graduates will have limited experience working with a handful of these cloud technologies…

Depending on your perspective or seat at the table, these hidden costs could be a good thing.

Kubernetes github.com

A chaos engineering platform for Kubernetes

Chaos Mesh is a cloud-native Chaos Engineering platform that orchestrates chaos on Kubernetes environments. At the current stage, it has the following components:

  • Chaos Operator: the core component for chaos orchestration. Fully open sourced.
  • Chaos Dashboard: a visualized panel that shows the impacts of chaos experiments on the online services of the system; under development; curently only supports chaos experiments on TiDB(https://github.com/pingcap/tidb).

For the uninitiated, chaos engineering is when you unleash havoc on your system to prove out its resiliency (or lack thereof).

A chaos engineering platform for Kubernetes

The Changelog The Changelog #375

Gerhard goes to KubeCon (part 2)

Gerhard is back for part two of our interviews at KubeCon 2019. Join him as he goes deep on Prometheus with Björn Rabenstein, Ben Kochie, and Frederic Branczyk… Grafana with Tom Wilkie and Ed Welch… and Crossplane with Jared Watts, Marques Johansson, and Dan Mangum.

Don’t miss part one with Bryan Liles, Priyanka Sharma, Natasha Woods, & Alexis Richardson.

The Changelog The Changelog #374

Gerhard goes to KubeCon (part 1)

Changelog’s resident infrastructure expert Gerhard Lazu is on location at KubeCon 2019. This is part one of a two-part series from the world’s largest open source conference. In this episode you’ll hear from event co-chair Bryan Liles, Priyanka Sharma and Natasha Woods from GitLab, and Alexis Richardson from Weaveworks.

Stay tuned for part two’s deep dives in to Prometheus, Grafana, and Crossplane.

Alberto Marchetti Medium

Get notified when your k8s cron jobs fail

Alberto Marchetti:

What do you do when you have CronJobs running in your Kubernetes cluster and want to know when a job fails? Do you manually check the execution status? Painful. Or do you perhaps rely on roundabout Prometheus queries, adding unnecessary overhead? Not ideal… But worry not! Instead, let me suggest a way to immediately receive notifications when jobs fail to execute, using two nifty tools…

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