Learn Kubernetes Weekly issue 45

Developing high-quality Helm charts, Helm dependencies updates, GKE review, Future of API gateways, Cloud native buildpacks

20 Sept 2023

We've launched KubeFM — a podcast on everything Kubernetes!

In the first episode, Grace (release lead for Kubernetes 1.28) will show you some of the most exciting changes in this release.

You can watch the first episode here.

Articles

1. The comprehensive guide to developing high-quality Helm charts faster: tips and tools

   Piotr Kleban

   This article provides a guide to developing quality Helm charts and covers the following:

   1. Tools for finding issues quickly.
   2. Troubleshooting methods.
   3. Best practices.
   4. Why linting tools are important to ensure high-quality, reliable charts.

2. Optimized Kubernetes cluster architecture: considerations and best practices

   ARMO

   In this article, you'll explore key considerations for optimizing a Kubernetes cluster, including different cluster, node, and tenancy configurations.

   sponsored

3. Who will win: Kubernetes or a simple list request?

   Maksim Nabokikh

   An unexpected reboot of a Kubernetes API server led to a massive increase in etcd memory consumption, causing a restart of all control planes.

   Learn how the team at Palark debugged and resolved the issue with the Priority & Fairness API.

4. Charting the course: Helm dependencies updates made easy

   Artem Lajko

   In this article, you'll learn how to automate Helm dependencies updates for ArgoCD and the manual helm template . with a script that detects changes in chart versions, creates a corresponding branch, and auto-generates a pull request.

5. Google Kubernetes Engine review

   Mathew Duggan

   In this (long) article, the author compares GKE to AKS and EKS, praising it as a superior product for managing Kubernetes.

   The author particularly highlights GKE Autopilot for its ease of use and cost-effectiveness.

6. The future of API gateways on Kubernetes

   Pubudu Gunatilaka

   Learn the history of the API gateways in Kubernetes and how the Gateway API project aims to make them more accessible by streamlining API layers and deployment models, and promoting efficiency and innovation.

Articles worth checking out:

• Kyverno CVE-2023-34091: bypassing policies using Kubernetes finalizers

• Simplifying management of RBAC and authentication in Kubernetes

• Curated list of Kubernetes tools

• Pod Disruption Budget in Kubernetes

• Kube-proxy: what is it and how it works

• How to use multiple Docker registry mirrors

• Kubernetes secrets: how to consume environment variable secrets within a pod

• Centrally manage the scope of Istio resources in a multi-tenant Kubernetes cluster

• A more resource efficient HA setup for metrics collection agents using Kubernetes leader election

• Exploring Kubernetes testing evolution: deep-dive case studies from Eventbrite and Prezi

• Kubernetes with k3s: how I upgraded a production cluster from v1.17 to v1.25

Tutorials

1. Begginers guide to updating an AWS EKS cluster

   Guilherme Doné

   Updating an EKS Cluster might not be the most straightforward thing ever, and sometimes it can get even a bit convoluted.

   In this article, you will find a checklist of 7 steps you should complete before upgrading your cluster.

2. Kubernetes monitoring with VictoriaMetrics Cluster

   VictoriaMetrics

   This tutorial covers:

   • The setup of a VictoriaMetrics cluster in Kubernetes via Helm charts.
   • How to scrape metrics using service discovery.
   • How to visualize stored data.
   • How to store metrics in VictoriaMetrics tsdb.

   sponsored

3. Cilium NetworkPolicy with AWS security group rules

   Rocky Chen

   In this tutorial, you'll learn how to use toGroups rules in Cilium NetworkPolicy to control the traffic between the Kubernetes cluster and an EC2 VM.

4. Dynamic request routing and circuit breaking

   Flynn

   In this tutorial, you will learn how to use Linkerd for:

   • Dynamic request routing permits HTTP routing based on headers, HTTP method, etc.
   • Circuit breaking to stop sending requests to endpoints that fail too much.

5. A Guide to building a Kubernetes cluster with Raspberry Pis

   Alexander Sniffin

   This guide will teach you how to bootstrap your Raspberry Pi Kubernetes cluster with Flannel, ArgoCD, Prometheus and Grafana.

More tutorials:

• Easy Kubernetes connectivity for local utils

Kubernetes jobs

1. • System Administrator with ServiceNow

   • Salary: $133.3K to $226.7K a year

   • Location: remote from the United States, Canada

   • Tech stack: Kubernetes, AWS, Azure, Shell, Python, Gitlab, Ansible, Puppet

2. • Site Reliability Engineer with NBC Universal

   • Salary: $140K to $165K a year

   • Location: remote from the United States

   • Tech stack: Kubernetes, AWS, Azure, GCP, Helm, Docker, Go, Shell, Python, Javascript

3. • Software Engineer with Target

   • Salary: £75K a year

   • Location: remote from the United Kingdom

   • Tech stack: Kubernetes, AWS, Helm, Docker, GraphQL, Java, Mongo, MySQL, Terraform

Discover more Kubernetes jobs on Kube Careers →

Code & tools

1. Cloud native Buildpacks

   Cloud Native Buildpacks transform your application source code into container images running on any cloud.

   Features:

   1. Advanced caching.
   2. Auto-detection.
   3. Bill-of-Materials.
   4. Modular/Pluggable.
   5. Multi-language.
   6. Minimal app image.

2. kail: streams logs

   kail streams logs from all containers of all matched pods.

   You can match pods by service, replicaset, deployment, and others.

   Adjusts to a changing cluster - pods are added and removed from logging as they fall in or out of the selection.

3. mirrord

   mirrord is a tool that lets developers run local processes in the context of their cloud environment.

   It's meant to provide the benefits of running your service on a cloud environment without going through the hassle of deploying it.

4. k8senv: Kubernetes client's version manager

   k8senv is a Kubernetes version manager for kubectl, Helm and Velero inspired by tfenv.

5. ksoclabs/kbom

   KBOM (Kubernetes Bill of Materials) is a CLI tool that can generate a software bill of materials for your Kubernetes cluster.

Other interesting projects:

• linktimecloud/big-data-on-k8s

• C# worker services and Kubernetes liveness probes

• kube-green/kube-green

• emberstack/kubernetes-reflector

Upcoming Kubernetes events

1. Sept

   25

   Devopscon New York

   Online & in-person conference organized by S&S Media.

   • Location: New York, USA and virtual

   • This event requires an entrance fee

   • • Use learnk8s10 to get 10% off

2. Sept

   26

   Kubernetes Community Days Austria 2023

   In-person conference organized by KCD Austria.

   • Location: Vienna, AT

   • This event requires an entrance fee

3. Sept

   26

   Devopsdays Cairo

   In-person conference organized by Devopsdays.

   • Location: Cairo, EG

   • This event requires an entrance fee

4. Oct

   30

   Advanced Kubernetes course (Amsterdam)

   In-person workshop organized by Learnk8s.

   • Location: Amsterdam, NL

   • This event requires an entrance fee

5. Nov

   7

   Open Source Monitoring Conference

   In-person conference organized by NETWAYS.

   • Location: Nürnberg, DE

   • This event requires an entrance fee

Discover more Kubernetes events on Kube Events →

Kubernetes Call for Papers

1. expired

   GitOpsCon Europe

   The Call For Paper was open until 4 October 2023 at UTC. More info →

   • This is a virtual event

   • Online conference organized by Linux Foundation.

   • The conference starts on the 5 December 2023.

   • Apply here

2. expired

   Kubernetes Community Days Oslo 2024

   The Call For Paper was open until 13 November 2023 at UTC. More info →

   • Location: Olso, NO

   • In-person conference organized by KCD Norway.

   • The conference starts on the 24 January 2024.

   • Apply here

3. expired

   KCD Austria Rejekts 2023

   The Call For Paper was open until 1 October 2023 at UTC. More info →

   • Location: Vienna, AT

   • In-person meetup organized by Cloud Native Austria.

   • The meetup starts on the 19 October 2023.

   • Apply here

4. expired

   DevOps Savannah

   The Call For Paper was open until 25 September 2023 at UTC. More info →

   • This is a virtual event

   • Online conference organized by Cloud Native Nairobi.

   • The conference starts on the 18 October 2023.

   • Apply here

5. expired

   DevOps Day

   The Call For Paper was open until 27 September 2023 at UTC. More info →

   • This is a virtual event

   • Online conference organized by WeAreDevelopers.

   • The conference starts on the 4 October 2023.

   • Apply here

6. expired

   DevSecOps 2023

   The Call For Paper was open until 30 October 2023 at UTC. More info →

   • This is a virtual event

   • Online conference organized by Conf42.

   • The conference starts on the 30 November 2023.

   • Apply here

7. expired

   DevOps Talks New Zealand

   The Call For Paper was open until 1 October 2023 at UTC. More info →

   • Location: Auckland, New Zealand

   • In-person conference organized by DevOps Talks.

   • The conference starts on the 21 November 2023.

   • Apply here

8. expired

   DeveloperWeek 2024

   The Call For Paper was open until 14 October 2023 at UTC. More info →

   • Location: San Francisco, CA, USA and virtual

   • Online & in-person conference organized by DevNetwork.

   • The conference starts on the 21 February 2024.

   • Apply here

9. expired

   Devopsdays Birmingham (AL)

   The Call For Paper was open until 1 December 2023 at UTC. More info →

   • Location: Birmingham, AL, USA

   • In-person conference organized by Devopsdays.

   • The conference starts on the 18 April 2024.

   • Apply here

Until next time!

— Dan

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