Learn Kubernetes Weekly issue 150 · 24 Sept 2025

From Utilization to PSI, Inside Pod Traffic with Kindnet, The Sidecar Debate, Scalable ML with KEDA, Resizing Pods in Kubernetes 1.33

This newsletter is brought to you by AWS — reduce the costs of your AI infrastructure with Amazon EKS

We're hosting a workshop and webinar on building and scaling AI workloads on EKS with AWS!

I'll kick things off on Oct 2, demonstrating how I use Claude to streamline infrastructure management.

I've prepared a demo tackling a scenario we all know: converting Kubernetes deployments to Helm charts when the original YAMLs are long gone. You'll see Claude extract live configs, rebuild manifests, create Helm charts, and handle deployment—with testing and fixes included. What usually takes an afternoon gets done in 15 minutes.

You can join me here!

Articles

1. From utilization to PSI: Rethinking resource starvation monitoring in Kubernetes

   blog.zmalik.dev

   This article explains traditional Kubernetes resource monitoring flaws by advocating for direct Linux pressure-stall metrics to accurately identify task contention and resource competition.

2. Best Practices Cluster Setup Guide for Real-Time Inference on Amazon EKS

   docs.aws.amazon.com

   Transform your ML models into production-ready services. Learn how to simplify your ML deployment, implement efficient auto-scaling, and reduce operational costs with this step-by-step guide for hosting GenAI models on Amazon EKS.

   sponsored

3. Inside Intra-Node Pod Traffic in Kubernetes: How Kindnet with PTP Moves Packets

   medium.com

   This article explains how intra-node pod-to-pod traffic is handled when using Kindnet with the ptp CNI plugin.

4. The story behind the great sidecar debate

   linkerd.io

   This article explains how to compare the data plane resource consumption of Linkerd, Istio Legacy, and Istio Ambient using a benchmark test on GKE.

5. Scalable ML with Azure, Kubernetes and KEDA: Generating Inputs with 500 Pods

   medium.com

   This case study shows how to build architecture for scalable ML pipeline on Azure using Kubernetes and KEDA to generate inputs with 500 pods and deploy models via Azure ML.

Tutorials

1. Introducing Seekable OCI Parallel Pull mode for Amazon EKS

   aws.amazon.com

   Discover how SOCI Parallel Pull mode dramatically speeds up large container image downloads. Learn to optimize AI/ML workloads, reduce cold start time, and improve resource efficiency.

   sponsored

2. Deploying and Exposing Go Apps with Kubernetes Ingress, Part 1

   dev.to

   This tutorial shows how to deploy Go-based microservices in Kubernetes and expose them via Ingress.

3. Kagent: Agenetic AI for Kubernetes

   medium.com

   Kagent is an agentic AI framework for Kubernetes that lets engineers run autonomous AI agents to automate operations and troubleshooting.

   It installs via shell or Helm and integrates with LLMs through the Model Context Protocol (MCP).

4. Production Grade K8S From Bare Metal/Workstation With Multipass, MicroK8s, MetalLB, Cloudflare…

   medium.com

   This tutorial walks through building a production-grade Kubernetes cluster on a bare-metal workstation using Multipass VMs, MicroK8s, MetalLB for LoadBalancer support, and a Cloudflare tunnel.

5. 🔐 Kubernetes Authentication & Authorization

   medium.com

   This tutorial explains Kubernetes authentication (“who you are”) and authorization (“what you can do”) workflows.

   It shows how to issue user certificates, create a CertificateSigningRequest, approve it, and bind RBAC roles.

More tutorials:

• vCluster by Example

Kubernetes jobs

1. • Site Reliability Engineer with Verisign

   • Salary: $135.8K to $183.8K a year

   • Location: based in the office (and remote from home) in Reston, VA, USA

   • Tech stack: Kubernetes, On-premise, Python, Terraform

2. • Data Engineer with The Aerospace Corporation

   • Salary: $151.3K to $226.9K a year

   • Location: based in the office in Chantilly, VA / Huntsville, AL / Colorado Springs, CO / El Segundo, CA, USA

   • Tech stack: Kubernetes, AWS, Azure, GCP, Spark, Airflow, Kafka

3. • Software Engineer with Orbem

   • Salary: €70K to €75K a year

   • Location: based in the office (and remote from home) in München, BY, DE

   • Tech stack: Kubernetes, Docker, Go, Python, Java, Redis, RabbitMQ, Jenkins, GitHub Actions

4. • System Administrator with Bluestaq

   • Salary: $120K to $145K a year

   • Location: based in the office in Denver, CO, USA

   • Tech stack: Kubernetes, AWS, Azure, GCP, On-premise, Kustomize, Helm, Flux, ArgoCD, Docker

5. • Platform Engineer with Defense Unicorns

   • Salary: $148.75K to $201.25K a year

   • Location: remote from the United States

   • Tech stack: Kubernetes, Bare-metal, AWS, Azure, GCP, On-premise, Kustomize, Helm, Go, Shell

Discover more Kubernetes jobs on Kube Careers →

Code & tools

1. jthomperoo/predictive-horizontal-pod-autoscaler

   github.com/jthomperoo

   Predictive Horizontal Pod Autoscalers (PHPAs) are Horizontal Pod Autoscalers (HPAs) with extra predictive capabilities baked in, allowing you to apply statistical models to the results of HPA calculations to make proactive scaling decisions.

2. Kubernetes Descheduler

   github.com/kubernetes-sigs

   The Descheduler is a Kubernetes SIG tool that evicts pods from nodes when original scheduling decisions no longer match current cluster state.

3. KubeLinter – Kubernetes YAML & Helm Chart Static Analyzer

   github.com/stackrox

   KubeLinter is a static analysis tool that checks Kubernetes YAML files and Helm charts to ensure that applications adhere to best practices.

4. kubectl-klock – Readable kubectl watch output

   github.com/applejag

   kubectl-klock is a tool that renders kubectl get … --watch output in a more readable live-stream format instead of polling.

5. kgateway – Envoy-Based Kubernetes Gateway for API and LLM Traffic

   github.com/kgateway-dev

   kgateway is a Kubernetes-native, Envoy-based API gateway that routes, secures, and governs billions of API and AI requests across clouds.

Other interesting projects:

• Nelm – Helm 3 Replacement and Kubernetes Deployment Engine

• Chisel-Operator – Kubernetes Operator for Chisel Tunnels

• Winter Soldier: Kubernetes Cleaner

• k8sgpt: Kubernetes analyzer

• Blixt: Experimental Rust-Based eBPF Load Balancer

• kvaps/kubectl-node-shell

• Cloudflare Tunnel Ingress Controller

• Kubech: Kubernetes context manager

Upcoming Kubernetes events

1. Sept

   24

   Kubernetes v1.34 Release

   Online webinar organized by CNCF Online Programs.

   • This is a virtual event

   • This is a free event.

2. Sept

   25

   Multi-Tenancy Fundamentals: Why GPU Sharing is Harder in Kubernetes

   Online webinar organized by vCluster Labs.

   • This is a virtual event

   • This is a free event.

3. Sept

   30

   Civo Navigate London

   In-person conference organized by Civo.

   • Location: London, UK

   • This event requires an entrance fee

   • • Use KUBEEVENTS50 to get 50% off

     • Use KUBEEVENTSFREE to get a free ticket (25 FCFS)

     • Use 25TKUBECAR to get £25 discounted ticket

4. Oct

   2

   Devopsdays Eindhoven

   In-person conference organized by Devopsdays.

   • Location: Eindhoven, NL

   • This event requires an entrance fee

5. Oct

   13

   Advanced Kubernetes course (Amsterdam)

   In-person workshop organized by Learnk8s.

   • Location: Amsterdam, NL

   • This event requires an entrance fee

Discover more Kubernetes events on Kube Events →

Kubernetes call for papers

1. 11

   days

   KubeCon + CloudNativeCon Europe 2026

   The Call For Paper is open until 12 October 2025 at UTC. More info →

   • Location: Amsterdam, NL

   • In-person conference organized by Linux Foundation.

   • The conference starts on the 23 March 2026.

   • Apply here

2. 3

   days

   Cloud Native Days France 2026

   The Call For Paper is open until 5 October 2025 at UTC. More info →

   • Location: Paris, FR

   • In-person conference organized by CND France.

   • The conference starts on the 3 February 2026.

   • Apply here

3. 31

   days

   Devopsdays Los Angeles

   The Call For Paper is open until 2 November 2025 at UTC. More info →

   • Location: Los Angeles, CA, USA

   • In-person conference organized by Devopsdays.

   • The conference starts on the 7 March 2025.

   • Apply here

4. expired

   Devopsdays Wollongong

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

   • Location: Wollongong, AU

   • In-person conference organized by Devopsdays.

   • The conference starts on the 26 November 2025.

   • Apply here

5. 29

   days

   Devopsdays Porto Alegre

   The Call For Paper is open until 31 October 2025 at UTC. More info →

   • Location: Porto Alegre, BR

   • In-person conference organized by Devopsdays.

   • The conference starts on the 29 November 2025.

   • Apply here

6. expired

   Devopsdays Recife

   The Call For Paper was open until 30 September 2025 at UTC. More info →

   • Location: Recife, BR

   • In-person conference organized by Devopsdays.

   • The conference starts on the 13 December 2025.

   • Apply here

7. expired

   Devopsdays Florianópolis

   The Call For Paper was open until 30 September 2025 at UTC. More info →

   • Location: Florianópolis, BR

   • In-person conference organized by Devopsdays.

   • The conference starts on the 6 December 2025.

   • Apply here

8. 18

   days

   Devopsdays Salvador

   The Call For Paper is open until 20 October 2025 at UTC. More info →

   • Location: Salvador, BR

   • In-person conference organized by Devopsdays.

   • The conference starts on the 6 December 2025.

   • Apply here

Until next time!

— Dan