Kube Builders

Lin Sun, VP of Open Source @ solo.io, explains her approach to making complex service mesh and gateway concepts accessible to diverse technical audiences. She emphasizes that effective technical education requires understanding what your audience cares about and using metaphors that resonate with their experience. Lin shares a detailed house-to-hotel analogy to explain when service mesh becomes necessary: a family home only needs a secure front door (gateway), but a boutique hotel requires identity verification, key management, and room access control for each guest (service mesh capabilities). She stresses the importance of audience-centered thinking - providing genuine value rather than pushing unnecessary solutions, which helps maintain credibility. The discussion highlights how marketing skills have become essential for technical professionals, especially when explaining infrastructure concepts to teams with varying backgrounds and objectives.

This tutorial teaches how to use CronJobs, RBAC, ServiceAccounts, and the Go client-go library by building a three-cronjob system that dynamically adjusts Philips Hue light schedules based on daily sunrise/sunset forecasts from OpenWeatherMap. More: https://ku.bz/SxgMqCGLp

etcd-k8s-extract reads an etcd data directory or db file from a cluster and outputs all stored Kubernetes resources as YAML files, organized by kind and namespace. It works without a running cluster, ideal for disaster recovery or offline debugging. More: https://ku.bz/0k9tBJVKV

Hannah Foxwell, Co-founder at BIMP, is one of the featured lightning-talk speakers at LearnKube Day Salt Lake City 2026. Join the community for YAML Games and a reception with live DJ Amin Astaneh. Learn more: https://learnkube.com/learnkube-day-salt-lake-city-2026

LearnKube Day brings Kubernetes practitioners together for five-minute lightning talks and practical lessons from the community. Andy Suderman, CTO at Fairwinds, is one of the featured lightning-talk speakers at LearnKube Day Salt Lake City 2026. Join the community for YAML Games and a reception with live DJ Amin Astaneh. Learn more: https://learnkube.com/learnkube-day-salt-lake-city-2026

LearnKube Day brings Kubernetes practitioners together for five-minute lightning talks and practical lessons from the community. Nabarun Pal, Principal Software Engineer at Broadcom, is one of the featured lightning-talk speakers at LearnKube Day Salt Lake City 2026. Join the community for YAML Games and a reception with live DJ Amin Astaneh. Learn more: https://learnkube.com/learnkube-day-salt-lake-city-2026

This tutorial shows how to fix GKE pod IP exhaustion without rebuilding the VPC by adding a Class E secondary range, creating a new node pool, and draining workloads onto nodes that use the new pod CIDR. More: https://ku.bz/58z4nyVYt

Fabián Sellés Rosa, Tech Lead in the Runtime team @ Adevinta, explains why DNS resolution is particularly complex for Kafka compared to other services. Unlike typical applications that simply resolve a hostname to an IP address, Kafka uses a two-step DNS resolution process: first connecting to a bootstrap server, which then provides a list of brokers that must each be individually resolved to access the actual data. Watch the full episode: https://ku.bz/NsBZ-FwcJ

This week on Learn Kubernetes Weekly 208: ⚖️ Go, Node.js, C#, Java, and Python on Kubernetes 🗃️ Why Kubernetes depends on etcd and Raft 🧠 JVM memory: high usage does not always mean a leak ⏳ Dagster bottlenecks that more nodes cannot fix 🔀 Apache Stateful Functions on Flink 2.x and Java 21 Read it: https://kube.today/issues/208 ⭐️ This newsletter is brought to you by LearnKube — understand how Kubernetes works, and what to do when it breaks. Live training with 60% hands-on labs: https://ku.bz/hypSbyc-V

Roman Arcea explains how better node selection matches infrastructure to workload demand and cuts idle capacity. Watch the full interview: https://ku.bz/sFvFF3Kvs

chaossnake is a Go terminal game that deletes real Kubernetes pods as you play Snake. Each food is a pod, and movement triggers kubectl delete. More: https://ku.bz/ZFQkGyGh5

Cleaning up images is only one part of registry scale. Meg Sarros covers the operational features that matter when image counts grow: lifecycle policies, archive storage, replication, pull-through caches, and repository templates. Scale comes from automating retention, distribution, and default settings before image sprawl becomes a problem. Watch the full interview: https://ku.bz/k_r1B0Rwj

Bitpoke's MySQL Operator automates high-availability MySQL clusters on Kubernetes. It includes native backup/restore, PITR, Orchestrator integration, and clone support. More: https://ku.bz/VbMWgH0fC

This article shows how a twelve-board Raspberry Pi lab is put together, from cloud-init provisioning and static networking to a Ceph storage tier and a Kubernetes cluster sitting on top. More: https://ku.bz/gGz3DQCBd

Amos walks through his practical approach to debugging Kubernetes networking issues. Amos starts with K9s as his primary interface for obtaining node and pod information, but quickly points out its limitations when testing actual connectivity is required. Since most production images are slim and lack basic networking tools like curl, he emphasizes the importance of deploying debug pods using netshoot - a container image from nicolaka that comes packed with essential network debugging utilities.

LearnKube Day brings Kubernetes practitioners together for five-minute lightning talks and practical lessons from the community. Miriah Peterson, CEO and Co-founder at Haikei Labs, is one of the featured lightning-talk speakers at LearnKube Day Salt Lake City 2026. Join the community for YAML Games and a reception with live DJ Amin Astaneh. Learn more: https://learnkube.com/learnkube-day-salt-lake-city-2026

Mai Nishitani, Director Enterprise Architecture @ NTT Data, explains how Amazon EKS Auto Mode addresses the limitations of AWS Fargate while taking a different approach to infrastructure abstraction. Rather than hiding infrastructure completely like Fargate did, EKS Auto Mode manages repetitive operational tasks while still providing access to EC2 instances. Mai breaks down the key components that come out-of-the-box with EKS Auto Mode: - Karpenter for compute autoscaling - AWS Load Balancer Controller for exposing Kubernetes services via Elastic Load Balancer - EBS CSI for persistent storage with EBS volumes - VPC CNI giving pods their own VPC IP addresses for direct AWS service communication - EKS Pod Identity Agent for secure AWS credential management Watch the full episode: https://ku.bz/3hWvQjXxp

kube-forward is a Rust-based CLI that persistently manages multiple kubectl port-forward sessions from a YAML config. It handles retries, health checks, and protocol-specific rules—auto-reconnecting or gracefully exiting based on policy. More: https://ku.bz/YDfXbcw8z

LearnKube Day brings Kubernetes practitioners together for five-minute lightning talks and practical lessons from the community. Artem Lajko, Head of Platform Engineering at iits-consulting, is one of the featured lightning-talk speakers at LearnKube Day Salt Lake City 2026. Join the community for YAML Games and a reception with live DJ Amin Astaneh. Learn more: https://lnkd.in/gzwrx3mx

This article shows how an LLM inference platform was built on EKS with Terraform, GitOps and monitoring using a cheap CPU stub first, so the GPU only arrived once the whole platform worked. More: https://ku.bz/J-R5wwJmV