Gulcan and I wrote a free book on right-sizing GPUs in Kubernetes. Here's the short version (thread)

Just landed: Learn Kubernetes weekly 172! My top picks: 🎒 Data Streaming: Kafka + Flink Baggage Tracker 🥧 Raspberry Pi Home Kubernetes Cluster 🤖 AI Document Processing with Ray 💰 Wozz: Kubernetes Cost Tool Read it here: https://kube.today/issues/172

etcd is the database behind every Kubernetes cluster. You can run one for years without thinking about it. Then your cluster gets big enough, and etcd is all you think about. A thread on why. 🧵

The K8s multi-tenancy landscape has changed a lot in a year. New tools, dead projects, and the linear spectrum no longer hold. Tomorrow I'm walking through what shifted and why Come grill me live https://ku.bz/multitenant26

Just landed: Learn Kubernetes weekly 171! My top picks: 🌐 Local DNS for Demos 🔑 Kubeconfig Files for Service Accounts 🎮 GPU-accelerated Chromium on Kubernetes 📸 Crust-Gather: kubectl Cluster Snapshot Plugin Read it here: https://kube.today/issues/171

😱 Kubelet pulls images serially by default — one large image silently blocks every pod behind it Jan shares how he shaved 20 seconds off node startup and 30 seconds off P90 pod startup across ~1,000 EKS nodes https://ku.bz/B7TzKXyxf

Multi-tenancy in Kubernetes has always been about sharing a cluster with other teams. Multiple groups, one cluster. Everyone needs their own space. But the way we think about it just changed. Here's why 🧵

Just landed: Learn Kubernetes weekly 170! My top picks: 💾 Persistent Storage in AKS 🌐 Kubernetes Gateway API Setup 🔗 Unifying Inner & Outer Loops 🔍 Korrel8r Observability Correlation Engine Read it here: https://kube.today/issues/170

Last year, I mapped the K8s multitenancy spectrum. This year, I'm adding AI agent sandboxing — where does it fit when the tenant isn't a human but a machine acting autonomously? In collaboration with @vcluster.com Feb 24 — 10:00 AM ET https://ku.bz/Kzd7BPBqq

The Kubernetes scheduler doesn't randomly assign pods to nodes It runs a two-phase pipeline: filter, then score Here's how it works, in 7 diagrams

Just landed: Learn Kubernetes weekly 169! My top picks: 🔧 Vanilla K8s on NixOS 📊 Signals to Reliability: SLOs, Runbooks and Post-Mortems 🚪 Introducing MCP-Gateway in Kagenti 🤖 Kubently: Agentic K8s Debugging Read it here: https://kube.today/issues/169

Just landed: Learn Kubernetes weekly 168! My top picks: 🔍 Job Failures to Serial Console Bottlenecks 📊 OpenTelemetry-Native LGTM Stack 📦 Container Image Reduction: 1.2GB to 100MB 🔎 Lynq: SQL-like Kubernetes Read it here: https://kube.today/issues/168

💰 A full Kubernetes cluster for $2/month. Three nodes, multi-region, real workloads 💡 The clever part: skip the $10/month load balancer entirely. Tailscale operator + tailnet = fully private cluster by default https://ku.bz/HpVyQMVv0

Just landed: Learn Kubernetes weekly 167! My top picks: 🏗️ 80M User Infrastructure with a 5-Person Team 🤖 Self-Hosted RAG on Kubernetes ☁️ Managed Kubernetes on Proxmox with CAPI 📊 Prom Analytics Proxy Read it here: https://kube.today/issues/167

Just landed: Learn Kubernetes weekly 166! My top picks: 🐛 Fixing Kubelet Sandbox Errors 📊 Distributed Tracing with Tempo on AKS 💰 SimKube for Cost Forecasting 🚀 Kargo: GitOps Automation Read it here: https://kube.today/issues/166

83% of Kubernetes teams use network policies. 60% struggle to understand what they're actually doing I surveyed 530 practitioners and here is what I found: https://kube.today/kubernetes-network-policies-2025

Just landed: Learn Kubernetes weekly 165! My top picks: 🌐 Stretching a Layer 2 network over KubeVirt 💰 Reducing Feature Environment Costs with KEDA ☁️ Build your own SaaS with Kamaji 🔄 VolSync PV Replication Read it here: https://kube.today/issues/165

Just landed: Learn Kubernetes weekly 164! My top picks: 🛡️ Enforcing policies with GateKeeper 📦 Partitioned Log Storage on S3 🎮 Dynamic MIG Partitioning 🔐 Crowdsec: security solution Read it here: https://kube.today/issues/164

Just landed: Learn Kubernetes weekly 163! My top picks: 💾 Home Data Lake on a Budget 🧠 Smart Load Balancing at Databricks 🔗 Postgres Pooling with pgBouncer 🚪 Goma Gateway: Declarative API Gateway Read it here: https://kube.today/issues/163

Just landed: Learn Kubernetes weekly 162! My top picks: 🔐 Securing K8s with Kong + Keycloak 🌐 Networking for EKS Hybrid Nodes 📊 Victoria Logs vs Loki: Benchmarking Results 🛡️ Kexa: Cloud Compliance at Scale Read it here: https://kube.today/issues/162

Just landed: Learn Kubernetes weekly 161! My top picks: 🧩 JVM Crash-Loop Debugging 🏪 Edge Kubernetes Evolution ☁️ Kubernetes for Cloud Infrastructure 🏷️ Kube-vip Load Balancer Read it here: https://kube.today/issues/161

🚀 It's that time of the year! What did I achieve in 2025? A thread 🧵

Just landed: Learn Kubernetes weekly 160! My top picks: 🔧 Jenkins Meets Kubernetes 🌉 GitOps for Network Engineers 🔗 AWS EKS Hybrid Networking ⚡ Stargz Snapshotter: lazy image distribution Read it here: https://kube.today/issues/160

Your container does not have GPU drivers installed So, how does PyTorch inside it actually use the host's GPU? Let me explain 🧵

Just landed: Learn Kubernetes weekly 159! My top picks: ⚔️ SSA Path to Kubernetes Diplomacy 🔁 GitOps from Container Push 🔐 Securing Kubernetes Layer by Layer 🧩 Yoke WASM IaC Deployer Read it here: https://kube.today/issues/159

In the latest KubeFM episode, Tanat shared how his team at Adevinta replaced EKS Managed Node Groups and Cluster Autoscaler with AWS Karpenter — and transformed their entire Kubernetes operation in the process https://ku.bz/T6hDSWYhb

1,317 Kubernetes practitioners shared how they manage resources: → 56% still do it manually despite wanting automation → 45% regularly hit CPU throttling/OOM kills → 57% estimate 20%+ waste in compute costs Report: https://kube.today/kubernetes-resource-management-2025

🗣️ Festus rebuilt Kubernetes from scratch in Go After teaching Kubernetes to thousands of engineers, this validates what I've seen: people don't struggle with complexity; they struggle with abstractions before fundamentals https://ku.bz/pf5kK9lQF

Just landed: Learn Kubernetes weekly 157! My top picks: ☁️ .NET Weather Forecast App on AKS 🧩 eBPF with Cilium VTEP (VXLAN tunnel) 📈 Autoscaling .NET APIs with KEDA 🌙 KubeElasti Scale to Zero Read it here: https://kube.today/issues/157

Just landed: Learn Kubernetes weekly 156! My top picks: 🚀 KEDA HPA Tuning 🌐 FQDN Egress Policies ☁️ .NET Weather Forecast App on AKS 🧩 Crust-Gather Cluster Snapshot Plugin Read it here: https://kube.today/issues/156

🤔 When you assess a Kubernetes workload, where do you actually start? Oleksii walks through his complete assessment framework—from initial business discovery using tools like Helm and K9s to creating consumable documentation https://ku.bz/zDThxGQsP

12 interviews. One truth: Kubernetes isn't just about containers Just in time for KubeCon NA, we're releasing something special—a book that explores the human stories behind Kubernetes, not just the technical ones http://ku.bz/k8s-world

Just landed: Learn Kubernetes weekly 155! My top picks: 💼 Senior Roles Dominate Cloud-Native 🔐 Post-Quantum Crypto in Kubernetes 🛡️ Kubernetes Network Security 🤖 KAITO: AI Toolchain Operator Read it here: https://kube.today/issues/155

I designed two things for KubeCon Atlanta that I'm proud of: 👾 @yaml.games: 10-min quiz rounds. Same format as our Advanced K8s workshop yaml.games 🔨 Platform Engineering Challenge: Teams of 4 build a platform in 90 mins ku.bz/-Rz3DBccC

Just landed: Learn Kubernetes weekly 154! My top picks: ⚡ Scaling Kubernetes Pain 🔐 MLOps Secret Management 🌍 DC-DR Clusters with Karmada 🧩 Kubernetes-Aware DB Proxy Read it here: https://kube.today/issues/154

Cloud providers advertise 65,000-node clusters. 88% of teams run under 1,000 I surveyed 917 practitioners on scaling AI workloads in Kubernetes The bottleneck isn't infrastructure, but knowing how to use what you have Report: https://kube.today/ai-infrastructure-2025

Just landed: Learn Kubernetes weekly 153! My top picks: 🌍 Environments, Not Clusters 🔁 Terraform → Crossplane on AWS ⚙️ Local Dev Tooling for K8s ⚡ Bare-Metal Autoscaler Read it here: https://kube.today/issues/153

🤔 Ever wondered what happens when you run kubectl apply? This Wednesday, Rafa and I trace the complete journey through authentication, RBAC, admission controllers, and into etcd. Plus: Server-Side Apply Join us live → ku.bz/k8s-api-ssa

🚀 Platform Engineering is coming for DevOps! Q3 Kubernetes jobs: - Platform roles doubled - Software Engineers: 43% - DevOps most remote (56%), Managers most office (59%) Plot twist: Junior roles doubled despite AI hype → https://kube.careers/state-of-kubernetes-jobs-2025-q3

Just landed: Learn Kubernetes weekly 152! My top picks: 🚀 KEDA Autoscaling 💻 Cloud-Native Roles are Software Engineers 🍓 Raspberry Pi K8S Cluster Setup 🧹 Kubernetes Orphaned Resources Finder Read it here: https://kube.today/issues/152

200 Mac minis. 20,000 iOS tests Vitalii from Agoda explains how they brought macOS workloads into Kubernetes at scale: - Hybrid pods - 55-60GB VM images with COW layering - kubectl exec over SSH Full episode: https://ku.bz/q_JS76SvM

At KubeCon Atlanta: 4 quiz battles. 1 live leaderboard—infinite shame/glory You will lose. You will question everything. You might win holographic stickers Join the YAML games: https://yaml.games

Just landed: Learn Kubernetes weekly 151! My top picks: ⚙️ Kubernetes Node Stability and Performance: 📦 Dynamic PVC provisioning on AWS EKS 🎨 GPU sharing with MPS and OKE 🧹 K8s cleaner Read it here: https://kube.today/issues/151

💣 5,000 lines of Groovy CI that only 3 people understand? On KubeFM, Ben shared how Faire went from a Jenkins monolith to a distributed Buildkite Key insight: Infrastructure failure rate dropped from 15% → <1% Watch: https://ku.bz/klBmzMY5-

🎉 Launching Kube Today – the homepage for everything Kubernetes! Daily news, jobs, events, etc., all in one place. No more jumping between sites I've been building this since June, and it's already my default homepage → https://kube.today

Just landed: Learn Kubernetes weekly 150! My top picks: 🖥️ Production Grade K8S From Bare Metal 🔐 Kubernetes Authentication & Authorization 🐹 Deploying and Exposing Go Apps with Kubernetes Ingress Read it here: https://learnkube.com/issues/150

"90% of teams don't need Kubernetes" - Danyl on KubeFM Key insight: Most "microservices" are distributed monoliths that K8s won't fix. Start with modular monoliths, extract services only when you hit real constraints Watch https://ku.bz/BYhFw8RwW

Ever had to create Helm charts from YAML files that… don't exist anymore? 🧨 I prepared a demo where Claude extracts running K8s configs, recreates the lost YAMLs, converts them to Helm charts Next week, I will show you live: https://ku.bz/claude-k8s

Just landed: Learn Kubernetes weekly 149! My top picks: ✂️ How We Cut Our Azure Cloud Costs by 3× 📈 Resizing Pods Without the Drama 👨‍🎓 Mastering Kubernetes Security 🐍 HAMi – sharing and isolation of GPUs Read it here: https://learnkube.com/issues/149

🧨 Adevinta's VPA went rogue, evicting critical pods in endless loops across 30 Kubernetes clusters serving 300k requests/second The fix took seconds. Finding it took all night https://ku.bz/rf1pbWXdN