Learn Kubernetes Weekly issue 155 · 29 Oct 2025

Scale Real-Time Video on AWS, 7 K8s Anti-Patterns in Prod, Senior Roles Rule Cloud-Native, Deep Dive into Leases, Smarter Pod Scheduling

This newsletter is brought to you by the YAML games — the only quiz series where knowing Kubernetes might actually work against you.

Heading to KubeCon?

We've been preparing something special:

• YAML Games! Six rounds of 10-minute Kubernetes quizzes across the event (Nov 11-13) - learn something, have fun, meet people at various booths.
• Platform Engineering Challenge Teams of 4 race to build a production K8s IDP in 90 minutes (Nov 10, 12:30 PM) - discover what it really takes to build a platform, compete for Jetson Orin Nano + credits.

If you're going: play YAML Games, sign up for the Challenge, and tell me how it goes!

Articles

1. Scaling Real-Time Video on AWS: How We Keep WebRTC Latency Below 150ms with Kubernetes Autoscaling

   hackernoon.com

   This case study describes how they engineered Kubernetes autoscaling, regional routing, and efficient media paths to maintain end-to-end latency under 150 ms for live WebRTC video at scale.

2. 7 Kubernetes Anti-Patterns That Hurt Us in Production (Learn from Our Mistakes)

   medium.com

   This article shares seven anti-patterns the authors ran into when running Kubernetes in production, such as misuse of liveness probes, overreliance on default settings, brittle YAML, and lack of proper feedback loops.

3. You’ll Secure a Lead or Principal-Level Cloud-Native Role Before a Junior One!

   cloudnativenow.com

   This article highlights that in the cloud-native job market only around 3-4% of roles are at the Junior level while Senior, Lead and Principal roles dominate, and it explores what this means for career seekers.

4. Deep Dive into Kubernetes Leases: Robust Leader Election for DaemonSets (with Go Examples)

   msalinas92.medium.com

   This article explains how Kubernetes Lease API enables safe leader election for workloads like DaemonSets.

   It walks through implementation details, trade-offs, and includes Go code examples using client-go.

5. Kubernetes pod scheduling: balancing cost and resilience

   cast.ai

   This article explores how scheduling policies can optimize resource usage while preserving fault tolerance.

   It covers strategies for using anti-affinity, spread constraints, and affinity weights to balance cost and resilience.

6. How Kubernetes Pod Priority and Preemption Work

   chaitanyakharche.hashnode.dev

   This article explains how Kubernetes assigns priority to Pods with PriorityClasses, and how it can evict lower-priority Pods to make room for higher-priority ones when resources are tight.

Articles worth checking out:

• Post-Quantum Cryptography in Kubernetes

• Kubernetes security fundamentals: networking

• Kubernetes Headaches: Unsticking StatefulSets from EBS ReadWriteMany Drama

• Shared Socket: Enhancing Kubernetes Pod Communication with eBPF

Tutorials

1. Deploying a .NET Weather Forecast App to AKS Using GitHub Actions and Argo CD

   medium.com

   This tutorial shows how to deploy a .NET weather forecast app to AKS using GitHub Actions to build/push the container and Argo CD to sync & deploy to the cluster.

2. Canary Deployments with Flagger

   dev.to

   This tutorial shows how to use Flagger to roll out updates gradually (canary style) in Kubernetes, automating traffic shifts, metric checks, rollbacks, and webhooks.

Kubernetes jobs

1. • DevOps Engineer with Hazel Health

   • Salary: $135K to $160K a year

   • Location: remote from the United States of America

   • Tech stack: Kubernetes, AWS, Kustomize, Flux, Docker, Shell, Python, SQL, Javascript, Java

2. • DevOps Engineer with Netguru

   • Salary: PLN 201.6K to PLN 338.4K a year

   • Location: remote from Europe

   • Tech stack: Kubernetes, AWS, Azure, GCP, Rancher, Flux, ArgoCD, Docker, Go, Shell

3. • Software Engineer with Anduril

   • Salary: $191K to $253K a year

   • Location: based in the office in Bellevue, WA, USA

   • Tech stack: Kubernetes, Docker, Go, Python, Java, C++, C, C#, Powershell

4. • Software Engineer with LITIT

   • Salary: $54K to $66K a year

   • Location: fully remote

   • Tech stack: Kubernetes, AWS, Helm, ArgoCD, Docker, SQL, Java, PostgreSQL, Kafka, GitHub Actions

5. • DevOps Engineer with Federato

   • Salary: $190K to $225K a year

   • Location: remote from the United States of America

   • Tech stack: Kubernetes, GCP, Helm, ArgoCD, Kafka, Terraform, GitHub Actions, Grafana, Prometheus

Discover more Kubernetes jobs on Kube Careers →

Code & tools

1. Sealed secrets

   github.com/bitnami-labs

   Sealed Secrets provides declarative Kubernetes Secret Management in a secure way.

   Since the Sealed Secrets are encrypted, they can be safely stored in a code repository.

2. kubernetes/git-sync

   github.com/kubernetes

   git-sync is a simple command that pulls a git repository into a local directory.

   It is a perfect "sidecar" container in Kubernetes - it can periodically pull files down from a repository so that an application can consume them.

3. kubectx + kubens: Power tools for kubectl

   github.com/ahmetb

   kubectx is a tool to switch between contexts (clusters) on kubectl faster.

   kubens is a tool to switch between Kubernetes namespaces (and configure them for kubectl) easily.

4. K8s cleaner

   github.com/gianlucam76

   K8s cleaner is a controller that identifies, removes, or updates stale/orphaned or unhealthy resources to maintain a clean and efficient Kubernetes cluster.

5. Smesh: Lightweight Kubernetes-Integrated Sidecar Mesh Without Proxies

   github.com/thebsdbox

   smesh is a proof-of-concept service mesh for Kubernetes that utilizes eBPF to intercept and redirect pod traffic to a sidecar proxy.

Other interesting projects:

• CloudNativePG: PostgreSQL operator

• Kite — Kubernetes Dashboard

• KAITO — Kubernetes AI Toolchain Operator

• FRP — Fast Reverse Proxy

• k8sgpt: Kubernetes analyzer

• Beelzebub — A Secure Low-Code AI Honeypot Framework

• cert-manager — Kubernetes Certificate Management Tool

• PVC-Autoresizer: Dynamic Volume Expansion

• Hcloud Kubernetes: Terraform module

Upcoming Kubernetes events

1. Nov

   4

   Kubernetes Community Days Porto 2025

   In-person conference organized by KCD Porto.

   • Location: Porto, PT

   • This event requires an entrance fee

   • • Use KCDPorto2025_kubecareers10 to get 10% off for the first 10 person

2. Oct

   30

   Understanding GPU Resources in Kubernetes

   Online webinar organized by vCluster Labs + LearnKube.

   • This is a virtual event

   • This is a free event.

3. Oct

   29

   Bypassing Kubernetes Security

   In-person meetup organized by Cloud Native Aachen.

   • Location: Aachen, DE

   • This is a free event.

4. Oct

   30

   Augment Your Kubernetes with AI Agents Using Kagent & High-scale Inference with EKS

   In-person meetup organized by Cloud Native Tel Aviv.

   • Location: Tel Aviv, IL

   • This is a free event.

5. Oct

   30

   Kubernetes Messaging at Scale: Building WhatsApp/SMS Integration for Enterprise CRM

   In-person meetup organized by Kubernetes Austin.

   • Location: Austin, TX, USA

   • This is a free event.

Discover more Kubernetes events on Kube Events →

Kubernetes call for papers

1. 3

   days

   Cloud Native Latam Summit

   The Call For Paper is open until 10 November 2025 at UTC. More info →

   • This is a virtual event

   • Online conference organized by Cloud Native LATAM.

   • The conference starts on the 27 November 2025.

   • Apply here

2. expired

   KyvernoCon EU 2026

   The Call For Paper was open until 3 November 2025 at UTC. More info →

   • Location: Amsterdam, NL

   • In-person conference organized by Nirmata.

   • The conference starts on the 23 March 2026.

   • Apply here

3. expired

   Devopsdays Los Angeles

   The Call For Paper was 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 Porto Alegre

   The Call For Paper was 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

Until next time!

— Gulcan