Learn Kubernetes Weekly issue 52 · 8 Nov 2023

Kubernetes failure stories, Slow S3 uploads from AWS EKS pods, Pod startup time improvements, Cilium BGP control plane, Team costs with KubeCost

Articles

1. Kubernetes failure stories

   k8s.af

   A compiled list of links to public failure stories related to Kubernetes.

2. Unveiling the speed mystery: investigating slow S3 uploads from AWS EKS pods

   medium.com

   In this article, you'll learn how the team at Property Finder debugged an issue with EKS where uploading a 10KB file to S3 took approximately 5 seconds.

   Spoiler: the fix involved changing the HttpPutResponseHopLimit in MetadataOptions to 2.

3. KEDA: autoscale your Kubernetes workloads in an event driven way

   padok.fr

   This article explores the use of KEDA for event-driven autoscaling of pods.

   It explains KEDA, its deployment and configuration, and how to scale web apps on regular (cron) schedules and HTTP events with KEDA HTTP add-on.

4. Pod startup time improvements

   medium.com

   Deploying Java apps in a Kubernetes environment can introduce challenges related to pod startup time that impact application performance, response times and scaling.

   In this article, you will learn what parameters you can tune to optimize it.

5. Kubernetes loadbalance service using Cilium BGP control plane

   medium.com

   In this tutorial, you'll configure Cilium to use Load Balancer services on a set of Raspberry Pis running K3s.

6. Encrypting secret data at etcd store on a minikube cluster

   techexpertise.medium.com

   In this article, you will learn how to encrypt and store Kubernetes secrets in etcd using an external encryption provider.

Articles worth checking out:

• How to secure internal communications with your backend via HTTPs using self signed certificates inside your Kubernetes cluster ?

• Understanding the kind CLI

• Kubernetes native sidecars in Istio

• Kubernetes 1.28: revenge of the sidecars?

• A collection of Docker images to solve all your debugging needs

• Helmfile: a declarative way to deploy Helm Charts

• Kubernetes autoscaling: achieving scalability and efficiency

• Auto-scaling Kinesis Data Streams applications on Kubernetes

• Kubernetes 1.28: improved failure handling for jobs

• ConfigMap and secret data reloading made easy with Reloader

Tutorials

1. Monitor Kubernetes cost across teams with Kubecost

   piotrminkowski.com

   In this article, you will learn how to monitor the real-time cost of Kubernetes clusters shared across several teams with Kubecost.

2. Setting up and testing Prometheus in a local Kubernetes environment

   medium.com

   This article provides a guide on setting up Prometheus in a Kubernetes cluster.

   It covers running a local Kubernetes cluster, deploying necessary components, and testing to ensure functionality.

3. Understanding k3d ingress

   rob-mengert.medium.com

   This tutorial will walk through various ways to get traffic in and out of a K3d cluster for testing purposes with a focus on ingress.

Kubernetes jobs

1. • DevSecOps Engineer with Angi

   • Salary: $175K to $185K a year

   • Location: remote from the United States

   • Tech stack: Kubernetes, AWS, On-premise, Helm, Python, SQL, Java, Scala, Ruby, Terraform

2. • Solution Architect with Second Front Systems

   • Salary: $150K to $190K a year

   • Location: remote from the United States

   • Tech stack: Kubernetes, AWS, Azure, GCP, Helm, Docker, Terraform, Gitlab, Istio

Discover more Kubernetes jobs on Kube Careers →

Code & tools

1. eks-node-viewer: visualizing dynamic node usage

   github.com/awslabs

   eks-node-viewer is a tool for visualizing dynamic node usage within a cluster.

   It displays the scheduled pod resource requests vs. the node's allocatable capacity. It does not look at the actual pod resource usage.

2. Breakfast: Learn GitOps

   github.com/evryn

   Breakfast is a visual course designed to explore the intricacies of GitOps workflows and understand the nuances of deploying applications on platforms like Kubernetes and Docker Swarm.

3. Multi Tool Kubernetes Pentest Image

   github.com/r0binak

   Multi Tool Kubernetes Pentest Image contains all the most popular and necessary tools for Kubernetes penetration testing.

4. kube-exec-controller: handling container drift

   github.com/box

   kube-exec-controller is an admission controller for handling container drift (caused by kubectl exec, attach, cp, or other interactive requests) inside a Kubernetes cluster.

   The project also includes a kubectl plugin for checking pods.

5. RBAC Manager

   github.com/FairwindsOps

   RBAC Manager is an operator that supports declarative configuration for RBAC with new custom resources.

   Instead of managing role bindings or service accounts directly, you can specify the desired state, and RBAC Manager will make the necessary changes.

Other interesting projects:

• Right sizing your pods (CPU Edition)

• mmumshad/kubernetes-the-hard-way

• Helmfile

• Kube-gateway: Layer 7 proxy

Upcoming Kubernetes events

1. Nov

   9

   Advanced Kubernetes course

   Online workshop organized by Learnk8s.

   • This is a virtual event

   • This event requires an entrance fee

2. Nov

   14

   Kubernetes Community Days Denmark

   In-person conference organized by KCD Denmark.

   • Location: Brabrand, DK

   • This event requires an entrance fee

3. Nov

   9

   Scale your streaming data pipelines efficiently with Kubernetes

   Online meetup organized by DevOpsUT.

   • This is a virtual event

   • This is a free event.

4. Nov

   15

   DeveloperWeek Enterprise 2023

   Online conference organized by DevNetwork.

   • This is a virtual event

   • This event requires an entrance fee

5. Nov

   14

   Introduction to Crossplane: the cloud native control plane framework

   Online & in-person meetup organized by Cloud Native Luxembourg.

   • Location: Luxembourg, LU and virtual

   • This is a free event.

Discover more Kubernetes events on Kube Events →

Kubernetes call for papers

1. 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

2. expired

   KubeCon + CloudNativeCon Europe

   The Call For Paper was open until 26 November 2023 at UTC. More info →

   • Location: Paris, FR

   • In-person conference organized by Linux Foundation.

   • The conference starts on the 19 March 2024.

   • Apply here

3. expired

   Kubernetes Community Days Spain 2023

   The Call For Paper was open until 10 November 2023 at UTC. More info →

   • This is a virtual event

   • Online conference organized by KCD Spain.

   • The conference starts on the 12 December 2023.

   • Apply here

4. expired

   Kubernetes Community Days Kerala 2024

   The Call For Paper was open until 18 November 2023 at UTC. More info →

   • Location: Kochi, IN

   • In-person conference organized by KCD Kerala.

   • The conference starts on the 3 February 2024.

   • Apply here

5. expired

   Kubernetes Community Days Costa Rica 2024

   The Call For Paper was open until 1 February 2024 at UTC. More info →

   • Location: Heredia, CR

   • In-person conference organized by KCD Costa Rica.

   • The conference starts on the 1 March 2024.

   • Apply here

6. expired

   One Summit

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

   • Location: San Jose, CA, USA

   • In-person conference organized by Linux Foundation.

   • The conference starts on the 29 April 2024.

   • Apply here

7. 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

8. expired

   Devdays Europe

   The Call For Paper was open until 31 January 2024 at UTC. More info →

   • Location: Vilnius, LT and virtual

   • Online & in-person conference organized by DATA MINER.

   • The conference starts on the 20 May 2024.

   • Apply here

9. expired

   Devopsdays Istanbul

   The Call For Paper was open until 23 January 2024 at UTC. More info →

   • Location: Istanbul, TR

   • In-person conference organized by Devopsdays.

   • The conference starts on the 20 April 2024.

   • Apply here

Until next time!

— Dan