Learn Kubernetes Weekly issue 148
No more CPU, Capacity Planning, Updates to Container Lifecycle, GitOps and vCluster, Carbon-Aware Scheduling with Liqo and Karmada
10 Sept 2025
This issue is brought to you by Testkube - your app is Kubernetes-native, your testing should be too. Run any kind of test automation with the help of the platform built for it.
Articles
Everything was fine until Kubernetes said ‘No more CPU’
Gowtham Sai
In this case study, you'll learn why Go services in Kubernetes can experience latency issues when GOMAXPROCS defaults don't match actual CPU allocations, and how to prevent these problems through explicit configuration and metric monitoring.
Kubernetes Capacity Planning: Getting It Wrong Is Step One (And That’s Okay!)
Jeremy Castle
This article explains how to learn foundational concepts and formulas for Kubernetes capacity planning, including node sizing, scaling strategies, and workload categorization.
Kubernetes v1.33: Updates to Container Lifecycle
This article covers two Kubernetes v1.33 container lifecycle updates:
- Sleep actions now support zero-second durations by default
- Specify custom stop signals directly in Pod specs instead of rebuilding container images
From CI to Kubernetes Catalog: Building a Composable Platform with GitOps and vCluster
Artem Lajko
This article explains how to build a composable Internal Developer Platform on Kubernetes using a modular, three-layer approach with tools like vCluster, Helm, and GitOps.
Orchestrating a Greener Cloud: Carbon-Aware Kubernetes Scheduling with Liqo and Karmada
alessandro chiarini
This article explains how to implement carbon-aware Kubernetes scheduling using Liqo for serverless functions and Karmada for container workloads to reduce emissions.
Why Kube-State-Metrics Matters for Kubernetes Observability
Shashi
This article explains how to deploy and use Kube-State-Metrics to monitor Kubernetes object states via Prometheus for cluster observability.
Keep your existing API testing tool. Run it at scale in Kubernetes
Testkube turns hours of sequential tests into minutes of parallel execution.
Whether you’re handling 1M+ requests, managing air-gapped deployments, or scaling browser tests, Testkube orchestrates it all in Kubernetes.
Tutorials
Metrics Server and HPA in Kubernetes
Chetan Atole
This tutorial teaches how to implement pod autoscaling in Kubernetes using the Metrics Server to collect metrics and the Horizontal Pod Autoscaler (HPA) to scale deployments.
Test Orchestration: You're Doing It, You Just Don’t Know It
Decoupling test logic from CI/CD pipelines is the difference between brittle, one-off scripts and a scalable, developer-friendly testing strategy. This guide explains why duct-taped CI/CD scripts don’t scale and how purposeful orchestration unlocks sustainable Continuous Testing.
sponsored
Launch Kubernetes job on-demand with Python
Stefano Passador
This tutorial teaches how to trigger Kubernetes jobs programmatically using a Python application deployed in-cluster that creates and deletes job objects via the Kubernetes API.
Securing Kubernetes Resources Without a VPN
Brian Sizemore
This tutorial shows how to restrict access to Kubernetes services without a VPN using oauth2-proxy with ingress-nginx.
No More Hardcoded Secrets: Automatic Database Credential Rotation with Vault, AKS and Postgres
Poojan Mehta
This tutorial sets up Vault's database secrets engine in AKS to generate short-lived Postgres credentials on demand, using ExternalSecrets and VaultDynamicSecret to sync them into native Kubernetes Secrets.
Kubernetes jobs
Site Reliability Engineer with Cognizant
Salary: $130K to $160K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, Azure, GCP, Docker, Shell, Python, SQL, SQL Server, PostgreSQL
Software Engineer with Replicated
Salary: $153.5K to $206.5K a year
Location: remote from the United States
Tech stack: Kubernetes, On-premise, Helm, Go, Javascript, Typescript, Puppet
DevSecOps Engineer with Dark Wolf Solutions
Salary: $130K to $145K a year
Location: based in the office (and remote from home) in College Park, MD, USA
Tech stack: Kubernetes, On-premise, Terraform, Ansible, ELK
Platform Engineer with Invisible Technologies
Salary: $240 a day
Location: fully remote
Tech stack: Kubernetes, GCP, Docker, Python, GraphQL, Javascript, Redis, RabbitMQ
Site Reliability Engineer with Axon
Salary: $134.25K to $214.8K a year
Location: based in the office (and remote from home) in Atlanta, GA, USA
Tech stack: Kubernetes, AWS, Azure, Go, Python, Java, C#
Discover more Kubernetes jobs on Kube Careers →
Code & tools
werf
Werf is a CLI tool for full-cycle CI/CD to Kubernetes.
It supports complete application lifecycle management, including building, publishing, and deploying container images, and offers features like automatic build caching.
Keel: Kubernetes Deployment Automation Engine
keel-hq
Keel is a Kubernetes Operator to automate Helm, DaemonSet, StatefulSet & Deployment updates.
Smesh: Lightweight Kubernetes-Integrated Sidecar Mesh Without Proxies
thebsdbox
smesh is a proof-of-concept service mesh for Kubernetes that utilizes eBPF to intercept and redirect pod traffic to a sidecar proxy.
k8skonf: Kubernetes in Typescript
konfjs
K8skonf is a TypeScript-based toolkit that simplifies the process of building, deploying, and managing Kubernetes applications.
It provides a more intuitive and easier-to-use API than traditional CDK8s and Helm.
KubeTidy helps you clean, merge, and optimize your Kubernetes configurations effortlessly.
Other interesting projects:
Upcoming Kubernetes events
Sept
10
GPU Enabled Platforms Overview
Online webinar organized by vCluster Labs + LearnKube.
This is a virtual event
This is a free event.
Sept
15
Advanced Kubernetes course (Singapore)
In-person workshop organized by Learnk8s.
Location: Singapore, SG
This event requires an entrance fee
Sept
16
Kubernetes Community Washington DC 2025
In-person conference organized by KCD Washington DC.
Location: Washington, D.C., USA
This event requires an entrance fee
Sept
17
JVM, Kubernetes and High Load: A Criminal Case
In-person meetup organized by tech&talk Frankfurt.
Location: Frankfurt am Main, DE
This is a free event.
Sept
18
Kubernetes Community Days Sofia 2025
In-person conference organized by KCD Sofia.
Location: Sofia, BG
This event requires an entrance fee
Sept
18
Online workshop organized by Learnk8s.
This is a virtual event
This event requires an entrance fee
Discover more Kubernetes events on Kube Events →
Kubernetes Call for Papers
expired
The Call For Paper was open until 14 September 2025 at UTC. More info →
This is a virtual event
Online conference organized by CNCF.
The conference starts on the 4 December 2025.
- Apply here
25
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
4
days
KCD Hangzhou + OpenInfra China Day 2025
The Call For Paper is open until 21 September 2025 at UTC. More info →
Location: Hangzhou, CN
In-person conference organized by KCD Hangzhou.
The conference starts on the 15 November 2025.
- Apply here
expired
The Call For Paper was open until 14 September 2025 at UTC. More info →
This is a virtual event
Online conference organized by CNCF.
The conference starts on the 3 December 2025.
- Apply here
46
days
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
expired
The Call For Paper was open until 16 September 2025 at UTC. More info →
Location: Bogotá, CO
In-person conference organized by Devopsdays.
The conference starts on the 14 October 2025.
- Apply here
14
days
The Call For Paper is 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
expired
Women in Tech Summit Kenya 2025
The Call For Paper was open until 14 September 2025 at UTC. More info →
Location: Nairobi, KE
In-person conference organized by WIT.
The conference starts on the 22 November 2025.
- Apply here
43
days
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
Until next time!
— Dan
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