Learn Kubernetes Weekly issue 129
CoreDNS and NodeLocalDNS, container filesystem by hand, GitLab CI to Kubernetes, scaling on a budget, karpenter and the future of autoscaling
30 Apr 2025
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Articles
How CoreDNS and NodeLocalDNS Work in a Kubernetes Cluster
Matthew Mattox
Learn how CoreDNS and NodeLocalDNS work together in Kubernetes to provide efficient DNS resolution.
NodeLocalDNS caches DNS records on each node, while CoreDNS handles service and external domain lookups.
[PDF] Stable Diffusion reduced AI inference costs by up to 86%
Discover how the Akamai RTX 4000 Ada GPUs outperformed AWS, cutting inference costs for Stable Diffusion by up to 86%.
sponsored
Building a container filesytem by hand
Michal Pitr
The article explains how Docker isolates container filesystems using overlayfs merging a read-only base layer with a writable "diff" layer.
Changes are stored in the upper layer, while deletions use whiteout files, enabling efficient shared base images.
Migrating GitLab CI from Docker+Machine to Kubernetes
Ivan Ka
In this casde study you will learn the struggles of an e-commerce tech team migrating from GitLab Docker+Machine to Kubernetes: 1M monthly jobs, fragmented docs, and constant breaking changes.
Scaling a development environment on a budget
Osama Mohamed
Azure Karpenter, Kyverno, and Goldilocks help E-Lab scale their development environment on a budget by dynamically provisioning and optimizing resources.
By leveraging these tools, they achieved a 63% cost savings and improved efficiency.
Karpenter: The Future of Worker Management and Autoscaling on Kubernetes
Talha Khaild
Learn how Karpenter transforms Kubernetes node management with cost-optimized worker provisioning, automatically selecting best-fit instances and forcing cloud-native application design across multi-cloud environments.
Articles worth checking out:
$5,000 Cloud Credits: Scale Without Limits
Akamai optimised cloud solutions can reduce infrastructure costs by up to 40%.
Deploy high-performance workloads without a credit card and pay only for what you use.
Tutorials
Deploy a Chatbot and RAG Pipeline for AI Inferencing on Kubernetes
Deploy a RAG pipeline on Akamai's Kubernetes service using GPU instances.
Create a chatbot that answers queries with data from your custom source, enhanced by Retrieval-Augmented Generation.
sponsored
Deploy a Hybrid EKS Kubernetes Cluster: Use On-Premises Nodes on Amazon EKS with Cilium CNI
Alberto Crescini
This guide details deploying a hybrid Amazon EKS cluster with on-premises nodes using Cilium CNI, covering IAM Roles Anywhere authentication, VPC routing, certificate setup, and Cilium configuration.workloads.
How Kubernetes health checks keep your apps running
Sagar
In this tutorial you will learn how Kubernetes uses Liveness (restarts failing containers), Readiness (routes traffic only to ready pods), and Startup (ensures proper startup) probes to keep apps running and resilient.
Integrating Azure Policy in your AKS cluster using Terraform
Will Velida
Integrate Azure Policy with AKS to automatically enforce Kubernetes security standards.
Learn how to use built-in policies, prevent privileged containers, and implement compliance checks across your cluster infrastructure.
Securing Applications Using Keycloak’s Helm Chart
Jan Lepsky
Learn how to secure applications by deploying Keycloak on Kubernetes using Helm, automating user management, implementing strong security policies, and creating a scalable identity infrastructure with minimal manual configuration.
More tutorials:
Kubernetes jobs
Systems Performance Engineer with Veeam Software
Salary: $111.2K to $158.9K a year
Location: remote from the United States
Tech stack: Kubernetes, Javascript
DevOps Engineer with Amentum
Salary: $145K to $160K a year
Location: based in the office in Colorado Springs, CO, USA
Tech stack: Kubernetes, VMware Tanzu, Terraform, Ansible
Platform Engineer with Workiva Inc.
Salary: $111K to $178K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, Helm, Docker, Go, Python, Java, Terraform
DevOps Engineer with Moog Inc
Salary: $110K to $145K a year
Location: based in the office (and remote from home) in Buffalo, NY, USA
Tech stack: Kubernetes, AWS, Azure, Docker, Terraform, Cloudformation, Azure DevOps, Ansible
Software Engineer with Tempus
Salary: $85K to $130K a year
Location: based in the office (and remote from home) in Chicago, IL, USA
Tech stack: Kubernetes, AWS, GCP, Docker, Python, Redis, PostgreSQL, Jenkins
Discover more Kubernetes jobs on Kube Careers →
Code & tools
Kubernetes Resource Recommender
Kubernetes Resource Recommender is a CLI tool for optimizing resource allocation in Kubernetes clusters.
It gathers pod usage data from Prometheus and recommends requests and limits for CPU and memory.
This reduces costs and improves performance.
KOM: Kubernetes Operator Manager
kkb0318
KOM (Kubernetes Operator Manager) is a tool that simplifies the management of Kubernetes operators by providing a centralized platform for deployment, management, and removal of operators.
KubeClipper: Kubernetes Manager
kubeclipper
KubeClipper is a tool that simplifies Kubernetes cluster management with a user-friendly web console, APIs, and a CLI tool.
404incorporated
Node Address Labeler automatically adds labels to nodes for IP addresses on a specified interface.
It works by watching the specified interface and adding/removing labels with the prefix "node.ip/".
The Logging operator solves your logging-related problems in Kubernetes environments by automating the deployment and configuration of a Kubernetes logging pipeline.
Other interesting projects:
Upcoming Kubernetes events
May
6
In-person conference organized by Cloud Native Romania.
Location: Bucharest, RO
This event requires an entrance fee
May
3
Kubernetes Community Days Costa Rica 2025
In-person conference organized by KCD Costa Rica.
Location: Heredia, CR
This event requires an entrance fee
May
6
Kubernetes Community Days Helsinki 2025
In-person conference organized by KCD Helsinki.
Location: Helsinki, FI
This event requires an entrance fee
May
5
Advanced Kubernetes course (Munich)
In-person workshop organized by Learnk8s.
Location: Munich, DE
This event requires an entrance fee
Apr
30
In-person conference organized by NDC.
Location: Melbourne, AU
This event requires an entrance fee
Discover more Kubernetes events on Kube Events →
Kubernetes Call for Papers
24
days
Kubernetes Community Washington DC 2025
The Call For Paper is open until 26 May 2025 at UTC. More info →
Location: Washington, D.C., USA
In-person conference organized by KCD Washington DC.
The conference starts on the 16 September 2025.
- Apply here
29
days
The Call For Paper is open until 31 May 2025 at UTC. More info →
Location: Vienna, AT
In-person conference organized by CNDA Austria.
The conference starts on the 8 October 2025.
- Apply here
3
days
Kubernetes Community Days Colombia 2025
The Call For Paper is open until 5 May 2025 at UTC. More info →
Location: Medellín, CO
In-person conference organized by KCD Colombia.
The conference starts on the 29 August 2025.
- Apply here
10
days
Kubernetes Community Days Lima, Perú 2025
The Call For Paper is open until 12 May 2025 at UTC. More info →
Location: Lima, PE
In-person conference organized by KCD Lima, Perú.
The conference starts on the 19 July 2025.
- Apply here
26
days
KubeCon + CloudNativeCon North America 2025
The Call For Paper is open until 28 May 2025 at UTC. More info →
Location: Atlanta, GE, USA
In-person conference organized by Linux Foundation.
The conference starts on the 10 November 2025.
- Apply here
45
days
The Call For Paper is open until 16 June 2025 at UTC. More info →
Location: Aarhus, DK
In-person conference organized by CND.
The conference starts on the 17 April 2025.
- Apply here
expired
The Call For Paper was open until 30 April 2025 at UTC. More info →
Location: Vilnius, LT and virtual
Online & in-person conference organized by Data Miner.
The conference starts on the 20 May 2025.
- Apply here
45
days
The Call For Paper is open until 15 June 2025 at UTC. More info →
Location: Tel Aviv, IL
In-person conference organized by Devopsdays.
The conference starts on the 11 December 2025.
- Apply here
expired
The Call For Paper was open until 30 April 2025 at UTC. More info →
Location: London, UK
In-person conference organized by Civo.
The conference starts on the 30 September 2025.
- Apply here
Until next time!
— Dan
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