In this post, you will learn about the differences between only chroot and chroot after pivot_root in detail.

You will realise the reason why it is used in containerization.

More: https://tbhaxor.com/pivot-root-vs-chroot-for-containers

Master Kubernetes with Learnk8s' Advanced Kubernetes workshops!

What should you expect?

- Learn how to architect and design clusters from the ground up (in the cloud or on-prem).
- Explore the Kubernetes internal component and how the system is designed with resiliency in mind.
- Deep-dive into the networking components and observe the packets flowing into the cluster.
- Hands-on labs to test the theory with real-world scenarios!
- And more.

The next course is in 1 month (24th of April) and you can sign up here: https://learnk8s.io/online-advanced-april-2023

It is not easy identifying the root cause for slow container image pulls on your AKS.

In this article, you'll follow Daniel's journey in debugging the OS disk queue depth and how it affects image pulls.

More: https://danielstechblog.io/mitigating-slow-container-image-pulls-on-azure-kubernetes-service

This IntelliJ plugin provides advanced editor and runtime support for Kubernetes.

More: https://plugins.jetbrains.com/plugin/10485-kubernetes

Scaling down to zero can result in significant cost savings when you have workloads that don't run 24x7.

In this tutorial, you'll learn how to do that with labels, taints, and the Cluster Autoscaler.

More: https://blog.realvarez.com/reduce-amazon-eks-cost-by-scaling-node-groups-to-zero

Kubectl Sockperf is a kubectl plugin to measure latency in Kubernetes.

More: https://github.com/OvidiuBorlean/kubectl-sockperf

In this 2-part series, you will use Flomesh to connect multiple Kubernetes clusters and integrate services discovery and communication.

More: https://dev.to/naqvis/kubernetes-multi-cluster-communication-with-flomesh-service-mesh-part-2-1kbj

In this article, you will learn how you can use Advanced Cluster Management (ACP) and OSUS (Openshift Update Service) in order to distribute an upgrade path to multiple clusters in an air-gapped environment.

More: https://shonpaz.medium.com/upgrading-a-fleet-of-air-gapped-openshift-clusters-using-advanced-cluster-management-93d767c38f41

Kubernetes reference highlighter is a plugin for VS Code that highlights references in your Kubernetes YAML files.

More: https://marketplace.visualstudio.com/items?itemName=dag-andersen.kubernetes-reference-highlighter

In this article, you'll learn how the team at Agoda overcome a 30% capacity loss of critical services when switching from Virtual Machine to Kubernetes.

More: https://medium.com/agoda-engineering/private-cloud-and-you-736d8d99a51e

k8s-pod-restart-info-collector is a simple Kubernetes customer controller that watches for Pods changes and collects K8s Pod restart reasons, logs, and events to Slack channels when a Pod restarts.

More: https://github.com/airwallex/k8s-pod-restart-info-collector

Is Kubernetes networking similar to vSphere's?

No, but it is possible to draw analogies between the two.

In this article, you will compare Kubernetes to vSphere networking.

More: https://medium.com/@ryanjjacobs/kubernetes-networking-for-vcenter-administrators-8d78bb2f0efd

This repository contains the code for Ekkremis: a Prometheus-based alert manager to resolve kubernetes pods pending issues.

More: https://github.com/oslabs-beta/Ekkremis

This week on the Learn Kubernetes Weekly:

🚦 Graceful shutdown and zero downtime deployments
⚙️ Automated rollback to 2100 services with Argo
👀 Boosting container runtime observability with Open Telemetry
🐌 Mitigating slow pulls on AKS

Read it now: https://learnk8s.io/learn-kubernetes-weekly

In this article, you will discuss the challenges of how to upgrade clusters with breaking changes and use kube-no-trouble to test the upgrade path.

More: https://medium.com/linux-shots/find-deprecated-api-resources-used-in-a-kubernetes-cluster-44756c1126c8

In this article, you will learn a few strategies to (gradually) migrate your EKS cluster from the VPC CNI to Cilium (useful if you need NetworkPolicies).

More: https://medium.com/codex/migrate-to-cilium-from-amazon-vpc-cni-with-zero-downtime-493827c6b45e

CKAD Exercises is a set of exercises to help you prepare for the Certified Kubernetes Application Developer exam.

More: https://github.com/dgkanatsios/CKAD-exercises

Changes to a Secret of ConfigMap mounted into a pod can take 60 to 90 seconds to propagate to the container.

In this article, you'll discuss how you could speed up the process with a Kyverno policy.

More: https://neonmirrors.net/post/2022-12/reducing-pod-volume-update-times

This tutorial will teach you how to scan secrets in environment variables using Kubewarden and the env-variable-secrets-scanner-policy.

More: https://kubewarden.io/blog/2022/10/env-var-secrets

Finch is an open-source client for container development.

It works with containerd for container management, and with BuildKit to handle Open Container Initiative (OCI) image builds.

More: https://github.com/runfinch/finch

In this article, you will learn how to customize the image repository in Kubeadm.

In the process, you'll follow Sina's journey into reading the Kubernetes source code to debug an issue with the CoreDNS container image.

More: https://medium.com/@ssttehrani/customize-the-kubeadm-image-repository-c33ebdef7d82