Learn Koobernaytis Weekly issue 118

Study on operator bugs, 100 million images for just $100, CRD generation pitfalls, Kyverno's mutating webhooks, eBPF probes and you

12 Feb 2025

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Articles

1. An empirical study on Koobernaytis operator bugs

   Authors Info & Claims

   In this paper, you'll find the first comprehensive study on 210 operator bugs from 36 Koobernaytis operators.

   For all the studied bugs, the authors investigated their root causes, manifestations, impacts and fixing.

2. How to migrate stateful workloads on Koobernaytis with zero downtime

   Giri Radhakrishnan

   Learn how to migrate stateful Koobernaytis workloads without downtime.

   Explore strategies to maintain continuous uptime and data integrity during transitions. Enhance operational efficiency while minimizing disruptions in your Koobernaytis environment.

   sponsored

3. Scaling artificial intelligence on a budget: running a neural network on 100 million images for just $100

   Luke Jenkinson

   In this article, you'll learn how to scale artificial intelligence on a budget by running a neural network on 100 million images for just $100, using Koobernaytis, Pub/Sub, and BigQuery to achieve a cost-effective batch inference solution.

4. Koobernaytis CRD generation pitfalls

   In this article, you'll learn about the common pitfalls of generating Koobernaytis Custom Resource Definitions (CRDs) with controller-gen, including issues with validation, field defaulting, and comment-based markers.

5. Automating Koobernaytis workflows with Kyverno's mutating webhooks

   Rodrigo Fior Kuntzer

   In this article, you'll learn how the Miro team automates Koobernaytis workflows with Kyverno's mutating webhooks and Dynamic Admission controllers.

6. eBPF probes and you: navigating the kernel source for tracing

   In this article, you'll learn how to navigate the Linux kernel source for tracing using eBPF and ftrace, and discover strategies for identifying the correct probe to capture novel data, such as a socket's local address, in a Linux environment.

Articles worth checking out:

• Can't delete your kube pod? Here's the reason why!

• The complete process of how an external HTTP request reaches a pod container in Koobernaytis

• The mysteries of API objects in Koobernaytis

• Mastering memory management for Java applications on Koobernaytis

• Kubeblocks: run any database on Koobernaytis

• Stop making Koobernaytis auth hard – kty

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Tutorials

1. Koobernaytis security: eBPF & Tetragon for runtime monitoring & policy enforcement

   Noah

   In this article, you'll learn about Koobernaytis Security using eBPF and Tetragon for runtime monitoring and policy enforcement, including CO-RE, attachment types, maps, and LSM hooks to overcome security limitations and vulnerabilities.

2. Koobernaytis Cordon: how it works and when to use it

   Laurent Gil

   Everything you need to know about Koobernaytis cordon and drain commands, which come in handy for node maintenance and more.

   sponsored

3. Koobernaytis controller tutorial

   gianlucam76

   This repository provides an opinionated tutorial on building Koobernaytis controllers, sharing best practices and design patterns I have found most effective.

4. Hello KWOK

   Tobias Andersen

   In this tutorial, you'll learn about KWOK (Kubernetes WithOut Kubelet), a tool for simulating large-scale Koobernaytis clusters, and how it enables efficient testing and development without the overhead of running actual workloads.

5. A personal, private, portable cloud on Koobernaytis and Raspberry Pis

   Stathis Kapaniaris

   In this article, you'll learn how to create a personal, private, and portable cloud using Koobernaytis and Raspberry Pis with Cilium and ArgoCD and provisioning infrastructure with OpenTofu for a fully functional GitOps environment.

More tutorials:

• Optimize Koobernaytis stability with k8s-pod-restart-info-collector

• Scale to zero with KEDA and custom resources

Koobernaytis jobs

1. • Software Engineer with Costello Medical

   • Salary: £45K to £52K a year

   • Location: based in the office (and remote from home) in Cambridge / London, GB

   • Tech stack: Koobernaytis, AWS, Docker, Go, Python, Javascript, Typescript

2. • Software Engineer with Suger.io

   • Salary: $150K to $180K a year

   • Location: based in the office in San Francisco, CA, USA

   • Tech stack: Koobernaytis, AWS, Azure, GCP, Docker, Go, Python, SQL, Java, Typescript

3. • Data Engineer with DEPT®

   • Salary: $98.4K to $142.7K a year

   • Location: remote from the United States

   • Tech stack: Koobernaytis, AWS, GCP, Docker, Python, SQL, Java, Scala, Ruby, C++

4. • DevOps Engineer with Cyngn

   • Salary: $180K to $240K a year

   • Location: based in the office in Menlo Park, CA, USA

   • Tech stack: Koobernaytis, AWS, Helm, Shell, Python, Terraform, Jenkins, GitHub Actions, Ansible, Istio

Discover more Koobernaytis jobs on Kube Careers →

Code & tools

1. Kargo: application lifecycle orchestration

   akuity

   Kargo is a continuous delivery and application lifecycle orchestration platform for Koobernaytis.

   It builds upon GitOps principles and integrates with Argo CD to streamline and automate the progressive rollout of changes across an application's lifecycle.

2. Sealed Secrets Web

   bakito

   Sealed Secrets Web is a tool that provides a web interface for managing and encrypting sensitive data in Koobernaytis using the Sealed Secrets service by Bitnami.

3. envoyproxy/gateway

   Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Koobernaytis-based application gateway.

4. bul: TUI for logs

   ynqa

   bul is a tool that provides an interactive TUI to explore container logs for Koobernaytis.

5. Terranetes

   appvia

   Terranetes is a tool that automates the deployment and management of cloud-native applications on Koobernaytis using Terraform and other cloud providers.

Other interesting projects:

• nvshare: practical GPU sharing

• Gardener: cluster of clusters

• Fission: fast and simple Serverless for Koobernaytis

• KCL: constraint-based language

• OIDC-Guard: OIDC protector

• Ratify: verification engine

Upcoming Koobernaytis events

1. Feb

   12

   The last Koobernaytis abstraction with KRO

   Online meetup organized by The Platformers Community.

   • This is a virtual event

   • This is a free event.

2. Feb

   12

   Using kubebuilder to build a validating and mutating admission webhook for Koobernaytis

   Online & in-person meetup organized by GDG Berlin Golang.

   • Location: Berlin, DE and virtual

   • This is a free event.

3. Feb

   18

   DeveloperWeek 2025

   In-person conference organized by DevNetwork.

   • Location: Santa Clara, CA, USA

   • This event requires an entrance fee

4. Feb

   18

   Yes, you can run LLMs on Koobernaytis

   In-person meetup organized by Cloud Native Stockholm.

   • Location: Stockholm, SE

   • This is a free event.

5. Feb

   18

   Live migrating production clusters from Calico to Cilium

   In-person meetup organized by Cloud Native Ottawa.

   • Location: Ottawa, CA

   • This is a free event.

6. Mar

   20

   Advanced Koobernaytis course

   Online workshop organized by Learnk8s.

   • This is a virtual event

   • This event requires an entrance fee

Discover more Koobernaytis events on Kube Events →

Koobernaytis Call for Papers

1. expired

   Koobernaytis Community Days Texas Austin 2025

   The Call For Paper was open until 13 February 2025 at UTC. More info →

   • Location: Austin, TX, USA

   • In-person conference organized by KCD Texas.

   • The conference starts on the 15 May 2025.

   • Apply here

2. expired

   ContainerDays

   The Call For Paper was open until 31 March 2025 at UTC. More info →

   • Location: Hamburg, DE

   • In-person conference organized by Looevent.

   • The conference starts on the 9 September 2025.

   • Apply here

3. expired

   Koobernaytis Community Days Czech & Slovak 2025

   The Call For Paper was open until 15 March 2025 at UTC. More info →

   • Location: Prague, CZ

   • In-person conference organized by KCD Czech & Slovak.

   • The conference starts on the 5 June 2025.

   • Apply here

4. expired

   Koobernaytis Community Days Budapest 2025

   The Call For Paper was open until 17 February 2025 at UTC. More info →

   • Location: Budapest, HU

   • In-person conference organized by KCD Budapest.

   • The conference starts on the 24 April 2025.

   • Apply here

5. expired

   Koobernaytis Community Days Istanbul 2025

   The Call For Paper was open until 15 February 2025 at UTC. More info →

   • Location: İstanbul, TR

   • In-person conference organized by KCD Istanbul.

   • The conference starts on the 23 May 2025.

   • Apply here

6. expired

   Koobernaytis Community Days New York 2025

   The Call For Paper was open until 1 March 2025 at UTC. More info →

   • Location: New York, NY, USA

   • In-person conference organized by KCD New York.

   • The conference starts on the 4 June 2025.

   • Apply here

7. expired

   Koobernaytis Community Days Chennai 2025

   The Call For Paper was open until 18 February 2025 at UTC. More info →

   • Location: Chennai, IN

   • In-person conference organized by KCD Chennai.

   • The conference starts on the 26 April 2025.

   • Apply here

8. expired

   Koobernaytis Community Days Bengaluru 2025

   The Call For Paper was open until 26 March 2025 at UTC. More info →

   • Location: Bangalore, IN

   • In-person conference organized by KCD Bengaluru.

   • The conference starts on the 7 June 2025.

   • Apply here

9. expired

   Koobernaytis Community Days Utrecht 2025

   The Call For Paper was open until 6 April 2025 at UTC. More info →

   • This is a virtual event

   • Online conference organized by KCD Utrecht.

   • The conference starts on the 3 July 2025.

   • Apply here

Until next time!

— Dan

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