Learn Kubernetes Weekly issue 122
Super-scaling OPA with batch queries, Auto-scaling with KEDA using RED metrics, Power of preview Deployments, Performance testing
12 Mar 2025
This newsletter is brought to you by Akamai Cloud Computing — built for real cloud portability. Choose the right technologies for each workload. Avoid lock-in with proprietary services.
Articles
Super-scaling Open Policy Agent with batch queries
Nicholaos Mouzourakis
Scaling Open Policy Agent (OPA) with batch queries improves performance but requires balancing resource allocation and logging optimization to achieve high scalability in complex systems.
Workloads on any cloud: designing a cloud portability strategy
Design cloud-native workloads that stay portable across any cloud.
Learn to avoid vendor lock-in using containerization, load balancing, modular design, and GitOps for automation
sponsored
Auto-scaling with KEDA using custom RED metrics from Prometheus
Emre Bülbül
In this article, you'll learn how to implement auto-scaling using KEDA and custom RED metrics from Prometheus, to create a user-centric and efficient scaling solution for your cloud-native applications.
Building a Reliable Notification Service: Solving Duplication and Scaling Issues
Mahmoud Yasser
This article will teach you how to build a reliable notification service by solving duplication and scaling issues.
The article covers event-driven architecture, challenges with Kubernetes cron jobs, and solutions using BullMQ and Redis locks.
The power of preview Deployments: catching bugs before they bite using Argo CD
Rasheedat Atinuke Jamiu
In this article, you'll learn how to use Argo CD to create temporary preview environments for development purposes on Kubernetes.
Performance testing Kubernetes workloads
Stephan Schwarz
In this article, you will learn how to optimize your Kubernetes workloads with performance testing.
You will test pod capacity, deployment scalability, and concurrent users and gather insights with telemetry events.
Articles worth checking out:
Real cloud portability – No vendor lock-in
Migrate workloads seamlessly between clouds using open standards & open-source tech.
Optimize costs, improve interoperability, and avoid being tied to a single provider.
Tutorials
[eBook] Cloud portability: building a cloud-native architecture
Explore cloud portability with microservices, containers, CI/CD, and service mesh alternatives like Istio, Linkerd, and Consul.
Learn open standards for monitoring (Prometheus), registries (Harbor), and serverless (Knative)
sponsored
Learn Kustomize for Kubernetes
Josip Matijašević
In this guide, you will learn how to use Kustomize to customize manifest files without modifying originals.
Discover how to use transformers, patches, and generators to customize your Kubernetes resources across environments
Automatic testing and rollback of your GitOps with Argo Rollouts
Jason Umiker
In this tutorial, you will learn about Argo Rollouts, a tool for safe and reliable Kubernetes deployments.
Discover how to use automated testing and rollback to make deployments safer and more reliable.
Configuring Istio Authorization Policy in Kubernetes namespaces
Ivan Franchin
Learn how to secure your Kubernetes cluster with Istio Authorization Policy.
This guide shows you how to deploy a Quarkus API and restrict access to allow only the test1 namespace while denying the test2 namespace.
In this tutorial, you will learn how to self-host backups and restores using Longhorn, Velero, and GitOps.
Kubernetes jobs
Engineering Manager with Volkswagen Group of America
Salary: $245K to $265K a year
Location: based in the office (and remote from home) in Belmont, CA, USA
Tech stack: Kubernetes, AWS, Typescript, Kotlin, DynamoDB
Software Engineer with Influur
Salary: $200K to $250K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, GCP, Docker, SQL, Javascript
Software Engineer with Jobgether
Salary: $112.5K to $157K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, Kustomize, Helm, ArgoCD, Docker, Python, SQL, GraphQL, Mongo
Software Engineer with Deutsche Bank
Salary: $85K to $120.75K a year
Location: based in the office (and remote from home) in Cary, NC, USA
Tech stack: Kubernetes, GCP, Docker, SQL, Java, Kafka
Site Reliability Engineer with Kraken
Salary: $110K to $176K a year
Location: remote from the United States
Tech stack: Kubernetes, AWS, On-premise, Docker, Shell, Python, Rust, Spark, Airflow, Kafka
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.
InterLink aims to provide an abstraction for executing a Kubernetes pod on any remote resource capable of managing a Container execution lifecycle.
KWOK (Kubernetes-WithOut-Kubelet) is a toolkit that enables setting up a cluster of thousands of nodes in seconds.
Under the scene, all Nodes are simulated to behave like real ones, so the overall approach employs a pretty low resource footprint.
Chart-testing: linting and testing charts
ct is a tool for testing Helm charts.
It is meant for linting and testing pull requests and automatically detects charts changed against the target branch.
Liqo: multi-cluster topologies
Liqo is an open-source project that enables dynamic and seamless Kubernetes multi-cluster topologies, supporting heterogeneous on-premise, cloud and edge infrastructures.
Other interesting projects:
Upcoming Kubernetes events
Mar
14
In-person conference organized by Universidad Carlos III de Madrid.
Location: Madrid, ES
This event requires an entrance fee
Mar
15
Kubernetes Community Days Beijing 2025
In-person conference organized by KCD Beijing.
Location: Beijing, CN
This is a free event.
Mar
18
In-person conference organized by Devopsdays.
Location: Chicago, IL, USA
This event requires an entrance fee
Use KUBE-DISCOUNT-2025 to get 20% off
Mar
18
Kubernetes topic trends: February 2025 review
Online webinar organized by KubeFM.
This is a virtual event
This is a free event.
Mar
20
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
11
days
The Call For Paper is open until 31 March 2025 at UTC. More info →
Location: Hamburg, DE
In-person conference organized by Looevent.
The conference starts on the 9 September 2025.
- Apply here
expired
Kubernetes Community Days Czech & Slovak 2025
The Call For Paper was open until 15 March 2025 at UTC. More info →
Location: Prague, CZ
In-person conference organized by KCD Czech & Slovak.
The conference starts on the 5 June 2025.
- Apply here
6
days
Kubernetes Community Days Bengaluru 2025
The Call For Paper is open until 26 March 2025 at UTC. More info →
Location: Bangalore, IN
In-person conference organized by KCD Bengaluru.
The conference starts on the 7 June 2025.
- Apply here
17
days
Kubernetes Community Days Utrecht 2025
The Call For Paper is open until 6 April 2025 at UTC. More info →
This is a virtual event
Online conference organized by KCD Utrecht.
The conference starts on the 3 July 2025.
- Apply here
32
days
Kubernetes Community Days Taipei 2025
The Call For Paper is open until 20 April 2025 at UTC. More info →
Location: Taipei, TW
In-person conference organized by KCD Taiwan.
The conference starts on the 5 July 2025.
- Apply here
32
days
Kubernetes Community Days Sofia 2025
The Call For Paper is open until 21 April 2025 at UTC. More info →
Location: Sofia, BG
In-person conference organized by KCD Sofia.
The conference starts on the 18 September 2025.
- Apply here
41
days
The Call For Paper is 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
4
days
The Call For Paper is open until 23 March 2025 at UTC. More info →
This is a virtual event
Online conference organized by CNCF.
The conference starts on the 29 April 2025.
- Apply here
52
days
The Call For Paper is open until 10 May 2025 at UTC. More info →
Location: Eindhoven, NL
In-person conference organized by Devopsdays.
The conference starts on the 2 October 2025.
- Apply here
Until next time!
— Dan
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