LearnKube news

SnowOps Labs is a Kubernetes practice lab that builds a local cluster, injects realistic failures, and grades your fixes through guided scenarios and incidents. More: https://ku.bz/k8HVXFY_V

Ben Poland, Senior Staff Platform Engineer @ Faire, discusses the unexpected Kubernetes scaling challenges his team encountered when migrating their CI system from Jenkins to Buildkite. He explains how their new architecture created thousands of smaller pods instead of fewer large ones, which exposed internal Kubernetes throttling mechanisms they hadn't anticipated. The team also hit etcd space limitations due to the sheer number of concurrent pods running in their managed Kubernetes clusters. Watch the full episode: https://ku.bz/klBmzMY5-

This article explains three things that make DNS feel strange inside Kubernetes on AWS: the ndots setting, NodeLocal DNS caching, and a hidden per-ENI packet limit. More: https://ku.bz/SPFB3xHDf

EKS Hybrid Nodes addresses almost every on-prem Kubernetes pain point — without requiring a full cloud migration. Raglin Anthony explains how: AWS manages the control plane (patching, scaling, hardening), while your worker nodes stay on-premises. EKS Pod Identity and IAM roles for service accounts handle identity natively. Networking reuses your existing VPN or Direct Connect setup. And nodeadm handles node upgrades. You keep control of your infrastructure. AWS takes the control plane burden. Watch the full interview: https://ku.bz/2XqMJnLVx

KubeDesk is a cross-platform Kubernetes desktop app for browsing resources, viewing health and topology, streaming logs, opening shells, and making dry-run validated changes. More: https://ku.bz/-x0txgkcy

kubectl-config-doctor is a CLI plugin that detects broken, misconfigured, or unreachable kubeconfig setups—catching issues like duplicate contexts, invalid auth methods, missing files, or unreachable APIs. More: https://ku.bz/Whfwxjb38

This week on Learn Kubernetes Weekly 205: 🚨 How Kubernetes Health Checks Brought Down a Payment Service 🏗️ The cluster that runs on our own metal: rebuilding survey processing on hybrid Kubernetes ⚡ The Fastest Redis Call Is the One You Never Make 🌐 CNI Deep Dive 🤔 Why did CPUs never have this problem? Read it now: https://kube.today/issues/205 ⭐️ 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

This article explains how CNI connects Kubernetes pods, how ADD, DEL, and CHECK work, and how Flannel, Calico, and Cilium move traffic differently. More: https://ku.bz/FDkSSqmvF

kubectl-rsync is a kubectl plugin that uses rsync to copy only changed files between your computer and Kubernetes pods, with compression, progress tracking, and resumable transfers. More: https://ku.bz/G46msQG4b

What does the next decade of Kubernetes look like? Alex Kestner predicts the infrastructure powering Kubernetes clusters will become more and more invisible. Customers will focus on the applications that delight their users — not on managing the platform underneath. Watch the full interview: https://ku.bz/blMzG_XM7

This case study shows why a Kubernetes liveness probe must not depend on downstream services after one caused payment pods to restart repeatedly, and how separate readiness and liveness checks avoid the same failure. More: https://ku.bz/17SfHVlpF

LearnKube Day includes ten five-minute lightning talks from Kubernetes practitioners sharing practical lessons with the community. Brandt Keller, Staff Software Engineer at Defense Unicorns, is one of the featured lightning-talk speakers at LearnKube Day Salt Lake City 2026. The event brings together a hands-on Kubernetes workshop, technical sessions, open Q&A, lightning talks, YAML Games, and a community reception. Learn more: https://learnkube.com/learnkube-day-salt-lake-city-2026

AI review works best when the context is simple. It falls apart when the system is not. Artem Lajko draws a line between low-context tasks, like generating a small policy, and rich-context systems with cascading Helm charts and domain-specific assumptions. In those cases, the model may produce output that looks plausible but does not fit the real platform.

KubeIntellect lets you troubleshoot Kubernetes in plain English by checking kubectl, Prometheus, and Loki, while requiring human approval before it changes the cluster. More: https://ku.bz/mx5k0KyWt

Dave Masselink, Software Engineer and Founder at Compute Gardener, breaks down how their scheduler achieved 50% carbon emission reductions for deferrable workloads. He explains a crucial distinction: these savings come from temporal shifting rather than energy efficiency - the same jobs run using the same energy, but at times when the power grid has lower carbon intensity. Dave describes how California's grid experiences 5-7x swings in carbon intensity throughout the day, creating opportunities for "carbon emission arbitrage." Watch the full episode: https://ku.bz/zk2xM1lfW

This tutorial shows how to serve and scale large language models on Kubernetes with KServe, use KEDA for demand-based scaling, and run inference with vLLM. More: https://ku.bz/vQySxD1n9

This week on Learn Kubernetes Weekly 204: 🧠 Workload-Aware Scheduling in Kubernetes 1.37 ⚙️ Automaxprocs Now Costs Your Go Binary a CPU 🔀 Your gRPC Service Only Talks to One Pod. Here’s Why. 🔐 Your Kubernetes OIDC Issuer Is Just Two Static Files 🧩 Why We Open-Sourced ZSvirt Read it now: https://kube.today/issues/204 ⭐️ This newsletter is brought to you by NeuBird — move beyond dashboards and runbooks with an AI agent that detects production issues, finds their root cause, and helps your team resolve them https://ku.bz/nh5ZFW_b9

Kaniko builds container images from Dockerfiles inside Kubernetes or another container without needing a Docker daemon. More: https://ku.bz/Z38Ssvpmr

Why can a Go service be OOM-killed while its heap looks healthy? The heap is only part of the container's memory usage. Goroutine stacks, native allocations, and runtime overhead also count toward the container limit. In this new article from Gulcan, you will learn: - How CPU quotas affect Go's parallelism and why extra threads can increase throttling. - How to measure total container memory, including goroutine stacks and native allocations. - Why a tighter memory budget can increase garbage collection work and reduce throughput. Read: https://learnkube.com/go-kubernetes-requests-limits This article is also included in our book on Kubernetes rightsizing: https://learnkube.com/kubernetes-rightsizing

Join NeuBird and industry leaders at FLOCK ’26 on October 14 in San Francisco. Built for SREs, platform engineers, and reliability leaders exploring autonomous ops. Expect keynotes from former NASA astronaut Mike Massimino and MIT Media Lab’s Ramesh Raskar, hands-on breakouts, and curated seating. 📆 October 14 · SF Register here: https://na2.hubs.ly/H08984m0