Learn Kubernetes Weekly issue 208 · 3 Nov 2026

I benchmarked 5 Languages in Kubernetes, I Don’t Trust etcd and Neither Should You, High Memory in WSO2, Dagster on Kubernetes

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Articles

  1. I benchmarked 5 Languages in Kubernetes and here is what your stack actually costs

    www.binarybox.org

    This article benchmarks Go, Node.js, C#, Java and Python on the same Kubernetes cluster and shows how image size and startup time drive scaling speed and turn language choice into a monthly bill.

  2. I Don’t Trust etcd and Neither Should You

    har8.medium.com

    This article explains why Kubernetes keeps all its truth in etcd, and how the Raft algorithm gets several servers to agree on one version of reality before your apply returns.

  3. Investigating High Memory Utilization in a WSO2 API Manager Deployment

    medium.com

    This article explains why a JVM pod can sit at 90% memory and still be perfectly healthy, and how to compare pod memory with real heap usage before hunting for a leak.

  4. Dagster on Kubernetes: When More Nodes Won’t Save You

    medium.com

    This article explains how to troubleshoot Dagster on Kubernetes when runs stay slow, covering concurrency limits, pod scheduling issues, retries, and PostgreSQL queue coordinator bottlenecks.

  5. We forked Apache Stateful Functions for Flink 2.x — here's why

    kzmlabs.hashnode.dev

    This article explains why a team forked Apache Stateful Functions to keep it running on Flink 2.x and Java 21, what they changed in the connectors, build and release pipeline, and when you should use the fork.

  6. When failover isn't safe: building high-availability PostgreSQL on Kubernetes

    www.datadoghq.com

    This case study shows how a Datadog gameday exposed unsafe PostgreSQL failover on Kubernetes and how they made it safe with synchronous replication and Patroni.

Articles worth checking out:

4-Day Advanced Kubernetes Course — Munich

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Learn through live, in-person instruction and 60% hands-on labs, with practical exercises on Helm, Kustomize, and deployment strategies.

→ Join us in Munich, November 16–19

4-Day Advanced Kubernetes Course — Munich

Tutorials

  1. Migrating from Ingress NGINX to Gateway API on EKS

    medium.com

    This tutorial shows how to move an EKS cluster from the retired ingress-nginx controller to Gateway API, covering the AWS Load Balancer Controller CRDs and a zero-downtime traffic shift.

  2. Ephemeral Environments: Automating QA for Reliable Cloud-Native Systems

    medium.com

    This tutorial shows how to give every pull request its own ephemeral Kubernetes environment so tests run in a clean, isolated setup, using GitHub Actions and Argo CD ApplicationSets.

Who Owns Your Kubernetes Platform?

An application release can flood a shared Kubernetes cluster with logs, even though another team owns the logging infrastructure. Who has enough context to find the cause—and who owns the fix?

Molly Sheets joins Daniele Polencic and Bart Farrell to examine how tenancy decisions affect coordination, maintenance, and staffing costs. She connects ownership to business goals and explains why faster AI-assisted changes still need controlled releases.

In this episode:

  • The cost of one central team supporting multiple tenancy models
  • Why AI Ops needs context from application and platform teams
  • Network boundaries for AI-generated workloads
  • Maintenance as quality, with canary and cell-based releases
Who Owns Your Kubernetes Platform?

Kubernetes jobs

    • Test Automation Engineer with Sony Interactive Entertainment

    • Salary: $114K to $143K a year

    • Location: based in the office in Waterloo, CA

    • Tech stack: Kubernetes, Kubernetes, AWS, Docker, GCP, monitoring, Datadog, Grafana, Prometheus, ArgoCD

    • Machine Learning Engineer with Sony Interactive Entertainment

    • Salary: $152K to $190K a year

    • Location: based in the office in Madison, WI, USA

    • Tech stack: Kubernetes, Kubernetes, AWS, Docker, GCP, monitoring, Datadog, Grafana, Prometheus, ArgoCD

    • Test Automation Engineer with Sony Interactive Entertainment

    • Salary: $103.5K to $231.77K a year

    • Location: based in the office in San Mateo, CA, USA

    • Tech stack: Kubernetes, Kubernetes, Docker, Unity, Pytest, C, C++, Android, GTest, Unreal Engine

    • Software Engineer with Smartsheet

    • Salary: $107.5K to $147.5K a year

    • Location: remote from

    • Tech stack: Kubernetes, Kubernetes, AWS, AI tools, LLM, AI, REST APIs, React, Java, Kotlin

    • DevSecOps Engineer with SpaceX

    • Salary: $70.74K to $423.5K a year

    • Location: based in the office in Cape Canaveral, FL, USA

    • Tech stack: Kubernetes, Kubernetes, On-premise, alerting, alerts, signals, observability, TCP/IP, GitOps, CI/CD

Discover more Kubernetes jobs on Kube Careers →

Code & tools

  1. pvc-autoresizer: grow Kubernetes PVCs automatically

    github.com/topolvm

    pvc-autoresizer watches how full your volumes are and grows PersistentVolumeClaims automatically before they run out of space, reading usage from Prometheus or the Kubernetes Metrics API.

  2. burn: Kubernetes cost analysis from the CLI

    github.com/tanrikuluozlem

    burn is a CLI that shows where your Kubernetes cluster is spending money on compute, storage, load balancers and GPUs, and it can check those estimates against your real AWS or Azure bill.

  3. VolSync: replicate and back up Kubernetes volumes

    github.com/backube

    VolSync replicates Kubernetes persistent volumes between clusters with rsync or rclone, and can also back them up to object storage using restic.

  4. kube-mdns: Auto-Publish Ingress DNS Records over mDNS

    github.com/DerSteph

    kube-mdns watches Kubernetes Ingress resources and auto-publishes .local DNS records via mDNS, enabling zero-config LAN service discovery without modifying DNS.

  5. kube-forward: Reliable, Configurable Port-Forwarding

    github.com/kainlite

    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.

Other interesting projects:

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Upcoming Kubernetes events

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Kubernetes call for papers

  1. 19

    days

    Big Data Europe

    The Call For Paper is open until 23 November 2026 at UTC. More info →

    • Location: Vilnius, LT

    • In-person conference organized by DATA MINER.

    • The conference starts on the 27 November 2026.

    • Apply here

  2. 38

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    APE 2026

    The Call For Paper is open until 12 December 2026 at UTC. More info →

    • Location: Apenheul, NL

    • In-person conference organized by Stichting Meetups.

    • The conference starts on the 11 December 2026.

    • Apply here

  3. 1

    days

    Open Source Conference Kolkata

    The Call For Paper is open until 5 November 2026 at UTC. More info →

    • Location: Kolkata, IN

    • In-person conference organized by Open Source Con India.

    • The conference starts on the 5 December 2026.

    • Apply here

  4. 58

    days

    Devopsdays Raleigh

    The Call For Paper is open until 1 January 2027 at UTC. More info →

    • Location: Raleigh, NC, USA

    • In-person conference organized by Devopsdays.

    • The conference starts on the 27 April 2027.

    • Apply here

  5. 27

    days

    ContainerDays & AI Context London 2027

    The Call For Paper is open until 1 December 2026 at UTC. More info →

    • Location: London, GB

    • In-person conference organized by Dockland Media Group.

    • The conference starts on the 11 February 2027.

    • Apply here

  6. 44

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    Dawn Conferences 2027

    The Call For Paper is open until 18 December 2026 at UTC. More info →

    • Location: Amsterdam, NL

    • In-person conference organized by Dawn Technology..

    • The conference starts on the 19 March 2027.

    • Apply here

Until next time!

— Dan

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