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Kubernetes

Kubernetes is an open source system for automating deployment, scaling, and management of containerized applications.
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Ship It! Ship It! #34

Where is the cloud native App Store?

In our first 2022 episode, Alexis Richardson, co-founder and CEO of Weaveworks, is talking to Gerhard about going fully remote, what a great team looks like, and GitOps. While you may have heard of GitOps, now is a good time to check out opengitops.dev.

The most interesting part of today’s conversation is the missing cloud native App Store. While Apple revolutionised the world with the App Store and the iPhone, we don’t yet have something similar for cloud native apps. You may be thinking “But what about OperatorHub?”, or all the Helm registries out there? The registry fragmentation, operator deprecations and lack of curation are not what people have in mind when they think App Store. But there is more to it, so let’s hear how Alexis thinks about this.

Ship It! Ship It! #33

🎄 Merry Shipmas 🎁

Merry Shipmas! This is our special Christmas episode which sums up two months of very early mornings and a few late nights. After many twists and turns, stuff which didn’t work out, as well as pleasant surprises, this is what we ended up with:

  • 🎁 PR #395 - CI/CD Lego set with Guillaume de Rouville & Joel Longtine
  • 🎁 PR #396 - Continuous CPU profiling with Frederic Branczyk
  • 🎁 PR #399 - Auto-restoring Kubernetes clusters with Dan Mangum & Muvaffak Onuş

While we initially intended to have five Christmas presents in total, only three got delivered in time. We planned, worked hard and eventually shipped the best we could just in time for this special Christmas episode. Our hope is that the latest additions to our changelog.com GitHub repository will help you just as much as they will help our 2022 setup.

🎄Merry Shipmas everyone! 🎄

Ship It! Ship It! #32

Crossing the platform gap

In 2014 Gerhard joined CloudCredo, a startup co-founded by Colin Humphreys, Paula Kennedy & Chris Hedley. They stuck together through two acquisitions: Pivotal & VMware. This year, Colin, Paula & Chris co-founded Syntasso, the Platform-as-a-Product startup.

Today they all get together to talk about about what it takes to build a platform team, why Team Topologies is a good conversation starter and why a curated blend of off-the-shelf, composed, and self-created services are required in any organisation operating at scale.

Your hunch is right, all of them used to share the same Pivotal London office with Tammer Saleh, our guest from episode 31. Chris used to win all table tennis matches without even breaking a sweat, and today Gerhard gets his comeback. Touché!

Ship It! Ship It! #31

Is Kubernetes a platform?

Tammer Saleh, founder of SuperOrbital and former VP of Engineering at Pivotal, is joining Gerhard to talk about table tennis, remote work, and challenges that teams have with K8s.

Some years ago, both Tammer & Gerhard used to work in the same London office on CloudFoundry, and nowadays they are both into Kubernetes. Tammer and the SuperOrbital team are deeply experienced in this topic, and they help teams at companies like Bloomberg, Shopify, and federal U.S. agencies tackle hard Kubernetes and DevOps problems through engineering and training.

Why do companies need Kubernetes in the first place? Which are the right reasons for choosing it? Is Kubernetes a platform? Gerhard’s favourite: we are doing Kubernetes wrong, but it works better than when we were doing it right, so what’s up with that? This last one was a lot of fun, and we left the entire minute of laughter in at your request. Enjoy!

Evil Martians Icon Evil Martians

Stressless Rails deployments on K8s with Kuby

The Evil Martians have been hard at work de-stressifying their Ruby on Rails deployments with a new tool: Kuby. In this post they share their journey getting there. It’s a lot. But in the end they seem happy with the results.

Kuby lowers the bar of adopting Kubernetes for Rails apps, leveraging the power of the convention-over-configuration principle. Just as Rails conquered the world with its “build a blog in 15 minutes” idea, so too could Kuby reign supreme in the context of deployment—”deploy Rails on Kubernetes in 15 minutes”.

Ship It! Ship It! #26

Gerhard at KubeCon NA 2021: Part 2

In the second set of interviews from KubeCon North America 2021, Gerhard and Liz Rice talk about eBPF superpowers - Cilium + Hubble - and what’s it like to work with Duffie Cooley.

Jared Watts shares the story behind Crossplane reaching incubating status, and Dan Mangum tells us what it was like to be at this KubeCon in person. Dan’s new COO role (read Click Ops Officer) comes up.

David Ansari from VMware speaks about his first KubeCon experience both as an attendee and as a speaker. The RabbitMQ Deep Dive talk that he gave will be a nice surprise if you watch it - link in the show notes.

Dan Lorenc brings his unique perspective on supply chain security, and tells us about the new company that he co-founded, Chainguard. How to secure container images gets covered, as well as one of the easter eggs that Scott Nichols put in chainguard.dev.

Ship It! Ship It! #25

Gerhard at KubeCon NA 2021: Part 1

This is Gerhard’s first set of interviews from KubeCon North America 2021.

William Morgan shares with us some of the finer Linkerd details, such as the underlying security theme, why native Kubernetes objects are preferable to more CRDs, and the joy of meeting team members in person.

Frederic Branczyk speaks about Parca, a new continuous system profiling tool that uses eBPF to help you understand what is happening on your hosts.

Andrew Rynhard gives us a great Talos OS and Kubespan perspective, and shares some really good follow-up videos on these topics.

The last conversation is with David Flanagan - you know him as Rawkode - about new beginnings. It’s only been less than two months since we’ve had him in episode 18, and he kept really busy. Caleb, his 3 weeks old baby boy, was the youngest attendee at this conference, and some talks made him sleepy, so good job everyone.

Ops nomadproject.io

Nomad vs. Kubernetes

This page is built by the Nomad folks, so keep that in mind when reading through the comparison;

Kubernetes is an orchestration system for containers originally designed by Google, now governed by the Cloud Native Computing Foundation (CNCF) and developed by Google, Red Hat, and many others. Kubernetes and Nomad support similar core use cases for application deployment and management, but they differ in a few key ways. Kubernetes aims to provide all the features needed to run Linux container-based applications including cluster management, scheduling, service discovery, monitoring, secrets management and more. Nomad only aims to focus on cluster management and scheduling and is designed with the Unix philosophy of having a small scope while composing with tools like Consul for service discovery/service mesh and Vault for secret management.

I’m just excited to see strong competition in this space, and had never heard of Nomad prior to today. If you’ve used it and have experience/opinions, I’d love to hear ’em!

Alex Ellis blog.alexellis.io

Do your demos like a boss at KubeCon

Which conference sessions do you remember the most and why? Those with a little theatre, live demos and audience participation are the ones that have stuck with me.

I don’t think that I actually heard the term “live demo” until I went to my first Dockercon event in 2016. The implication was that some demos wouldn’t be run live and would be staged, rehearsed or faked.

We take a quick look at the origins of live conference demos, some of the people who do them best. Then we take a look at why having traffic to localhost may be beneficial to your talk and how you could go about getting real traffic into your local applications.

PostgreSQL kubegres.io

Kubegres is a K8s operator for deploying Postgres clusters

Kubegres is fully integrated with Kubernetes’ lifecycle as it runs as an operator written in Go. It is minimalist in terms of codebase compared to other open-source Postgres operators. It has the minimal and yet robust required features to manage a cluster of PostgreSql on Kubernetes. We aim keeping this project small and simple.

We’ve struggled with running Postgres inside K8s around these parts. Maybe this would’ve helped?

Kubernetes github.com

Datree is a CLI to ensure K8s manifests and Helm charts follow best practices

Datree is a CLI tool that supports Kubernetes admins in their roles, by preventing developers from making errors in Kubernetes configurations that can cause clusters to fail in production. Our CLI tool is open source, enabling it to be supported by the Kubernetes community.

It’s far more effective than manual processes, such as sending an email to a slew of developers, begging them to set various limits, which likely falls on deaf ears because developers are already overwhelmed.

In addition the CIL, Datree provides a web app interface which you can see in action right here.

Amazon Web Services github.com

You can now run Amazon EKS on your own infra

Amazon EKS Anywhere is a new deployment option for Amazon EKS that enables you to easily create and operate Kubernetes clusters on-premises with your own virtual machines. It brings a consistent AWS management experience to your data center, building on the strengths of Amazon EKS Distro, the same distribution of Kubernetes that powers EKS on AWS. Its goal is to include full lifecycle management of multiple Kubernetes clusters that are capable of operating completely independently of any AWS services.

Ship It! Ship It! #18

Bare metal meets Kubernetes

In this episode, Gerhard talks to David and Marques from Equinix Metal about the importance of bare metal for steady workloads. Terraform, Kubernetes and Tinkerbell come up, as does Crossplane - this conversation is a partial follow-up to episode 15.

David Flanagan, a.k.a. Rawkode, needs no introduction. Some of you may remember Marques Johansson from The new changelog.com setup for 2019. Marques was behind the Linode Terraforming that we used at the time, and our infrastructure was simpler because of it!

This is not just a great conversation about bare metal and Kubernetes, there is also a Rawkode Live following up: Live Debugging Changelog’s Production Kubernetes 🙌🏻

Daniele Polencic learnk8s.io

Kubernetes instance calculator

Should you use small or large instances in a Kubernetes cluster? It depends. You should consider a few factors when selecting an instance type:

  • What kind of workloads you deploy (i.e. memory and CPU requirements).
  • The blast radius you can tolerate.
  • How you design your HA strategy.
  • How many resources are available to the pods.

This calculator helps you select what’s right from over 700 instances from the major cloud providers.

PostgreSQL dok.community

Why you should be deploying Postgres primarily on Kubernetes

This is a ~15 minute presentation (with transcript) by Álvaro Hernández at a Data on Kubernetes Community event about why he believes Kubernetes solves a big problem with running Postgres in production.

Running a Postgres installation, with or without containers, is trivial. However, setting up a production environment is a whole different matter. Postgres is not by itself a production-ready software: it requires a set of side tools to complement its functionality: connection pooling, monitoring, backup tools, high availability software, you name it. This is called the “Stack Problem”. This brief talk discusses the Stack Problem, understanding how Kubernetes is the platform that best solves it, and what the main advantages (and disadvantages!) are of running Postgres on Kubernetes.

Ship It! Ship It! #15

Assemble all your infrastructure

In this episode, Gerhard follows up on The Changelog #375, which is the last time that he spoke Crossplane with Dan and Jared. Many things changed since then, such as abstractions and compositions, as well as using Crossplane to build platforms, which were mostly ideas.

Fast forward 18 months, 2k changes, as well as a major version, and Crossplane is now an easy choice - some would say the best choice - for platform teams to declare what infrastructure means to them. You can now use Crossplane to define your infrastructure abstractions across multiple vendors, including AWS, GCP & Equinix Metal. The crazy ideas from 2019 are now bold and within reach. Gerhard also has an idea for the changelog.com 2022 setup. Listen to what Jared & Dan think, and then let us know your thoughts too.

Alex Ellis blog.alexellis.io

Building an open source marketplace for Kubernetes (2 years later)

It’s 22 months since I found myself frustrated with writing boilerplate instructions to install simple, but necessary software in every tutorial I wrote for clients and for my own open source work.

In this article post I’ll walk you through the journey of the past two years from the initial creation, through to growing the community, getting the first sponsored app and what’s next. There will be code snippets, and technical details, but there should be something for everyone as we celebrate the two year anniversary of the project.

Kubernetes stackoverflow.blog

Why you should build on Kubernetes from day one

To k8s or not to k8s, that is the question on lots of people’s minds these days. In this post on Stack Overflow’s blog, Max Horstmann argues it’s worth doing… and worth doing right away.

If you’re building a new app today, it might be worth taking a closer look at making it cloud-native and using Kubernetes from the jump. The effort to set up Kubernetes is less than you think. Certainly, it’s less than the effort it would take to refactor your app later on to support containerization.

Kubernetes ably.com

No, we don’t use Kubernetes

At Ably, we run a large scale production infrastructure that powers our customers’ real-time messaging applications around the world. Like in most tech companies, this infrastructure is largely software-based; also like in most tech companies, much of that software is deployed and runs in Docker containers.

As you might expect if you’ve been following the technology scene at all, the following question comes up a lot:

“So… do you use Kubernetes?”

Ably doesn’t, and Maik explains in this artiicle why.

We talked with @lawik about the same topic a few weeks back on Ship It! #7. We even did a follow-up YouTube stream. I think that a conversation with Maik would be really interesting 🎙

Martin Heinz martinheinz.dev

Could Kubernetes pods ever become deprecated?

In any software project, over time new features and APIs are added and from time-to-time some of them also become deprecated and eventually get removed. Even huge project such as Kubernetes is no exception to this, yet core parts of its API don’t really come to mind when thinking about deprecating and eventual removal. So, the question is - could a core object or API in Kubernetes, such as Pod, Deployment or Service be removed and if so, how would that go?

Ship It! Ship It! #8

Cloud Native fundamentals

Why Cloud Native? What are the guiding principles that you should keep in mind as you are choosing a project from the Cloud Native Landscape? How do you build & ship an app in a Cloud Native way? Katie Gamanji, Ecosystem Advocate @ CNCF and former cloud engineer for American Express, Condé Nast and Microsoft, joins Gerhard to cover these topics in the context of the Cloud Native Fundamentals course that she developed. 15,000 students have already enrolled, and the initial feedback has been great. Tune in if you want to know why you should too, how to do it and when the course will become available for free.

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