Kubesploit

Learn how to build secure Docker images with Trivy, a tool for vulnerability scanning, and improve your application's security posture.

More: https://ku.bz/FvZDmCF5k

This week on Learn Kubernetes Weekly 124:

🍎 Kubernetes at Mercado Libre
💸 From Autopilot to Standard GKE: The Key to 15x Cheaper Istio
🧨 How We Built a Dynamic Kubernetes API Server for the API Aggregation Layer in Cozystack
🥇 All my DevOps pipelines from GitLab commit to ArgoCD got beaten by FTP
🕵️‍♂️ Examining approaches and patterns for debuggability: ephemeral containers and Argo Workflows

And more! If you prefer to receive the newsletter every week in your inbox, you can subscribe here: https://learnk8s.io/learn-kubernetes-weekly

Read it now: https://learnk8s.io/issues/124

⭐️ KubeFM published a book of battle-tested experiences from engineers who pushed Kubernetes to its limits and lived to tell the tale. Download for free here https://ku.bz/Z0j-v-pdG

Learn how to store and access sensitive data in Kubernetes with secrets securely.

Mount secrets as environment variables or files using secretKeyRef, envFrom, or secret volumes.

More: https://ku.bz/GjXlr7glV

Tim Miller CEO and Co-founder at Kusari challenges the common belief that minimal container images automatically mean better security.

He explains that while removing unnecessary binaries and shells is a good practice, the real focus should be on validating each component's purpose in the container. Tim emphasizes two key aspects of container security: ensuring transparency (knowing what's inside) and verification (confirming the image is truly minimal).

Watch the full interview: https://ku.bz/-2Sqn9Jb9

This interview is a reaction to Harsha Koushik's episode https://ku.bz/n_sJ04xMY

🎉 KubeFM's first book! A compilation of raw, unfiltered experiences from cloud-native practitioners who have faced cluster outages, scaled systems beyond their designed capacities and emerged with invaluable insights.

This book combines the most interesting conversations from the KubeFM podcast, curated by Gulcan Topcu and featuring a foreword by @Birthmarkb (the Vivacious voice behind KubeFM).

Inside, you'll discover firsthand accounts from engineers at organizations like Adidas, Getir, and Mercari who have pushed Kubernetes to its breaking point and documented what they learned.

The complete book is available as a free download, and you can get your copy here: https://ku.bz/Z0j-v-pdG

For those attending KubeCon, we'll be giving away 50 physical copies at Booth N583 (StormForge)

Falco is a cloud-native security tool designed for Linux systems.

It employs custom rules on kernel events, which are enriched with container and Kubernetes metadata, to provide real-time alerts.

More: https://ku.bz/ClJryQ999

Hillai Ben-Sasson and Ronen Shustin, Security Researchers at Wiz, recommend the Peach framework, an open-source project designed to build isolated environments either in the Cloud or on-premises.

Developed with contributions from various industry experts, Peach ensures proper isolation for tenants and customers.

Watch the full episode: https://ku.bz/yr16qNTFx

In Kubernetes 1.31, 'read-only' pod permissions aren't truly read-only: websocket changes now allow users with GET rights to potentially execute commands, exposing a critical RBAC security nuance.

More: https://ku.bz/mgmFKY4xT

argocd-vault-plugin is an Argo CD plugin that retrieves secrets from Secret Management tools and injects them into Kubernetes.

More: https://ku.bz/sZdfR-DDj

In this article, you will learn how to secure Argo CD in a multi-tenant environment using application projects, security policies, user groups, and roles.

More: https://ku.bz/dZcXtynfD

This week on Learn Kubernetes Weekly 123:

🏎️ Faster machine learning deployments: why we disabled GKE image streaming
📈 How we handled pod kills due to memory spikes while running heavy scripts
🌲 Feature-branches: vanilla Kubernetes + Bitbucket pipelines
✮ Scheduling shenanigans: the wild world of cloud wrangling from Kubernetes to Microsoft’s bandwidth-hungry octopus
🦾 Developing an ETL pipeline for massive NOAA sensor data: from raw files to predictive insights

Read it now: https://learnk8s.io/issues/123

⭐️ ⭐️ This newsletter is brought to you by MetalBear — run local code like in your Kubernetes cluster without deploying first with mirrord https://ku.bz/JC7mHPQXw

Pinniped is an authentication service for Kubernetes clusters.

It supports various authenticator types and OIDC identity providers and implements different integration strategies for various Kubernetes distributions to facilitate authentication.

More: https://ku.bz/6KZM5b9nV

John McBride, VP of Infrastructure and AI Engineering at the Linux Foundation shares how using Kubernetes and open-source AI models saved them tens of thousands of dollars.

You will learn:

- How to deploy VLLM on Kubernetes to serve open-source LLMs like Mistral and Llama
- How running inference workloads on your own infrastructure with T4 GPUs can reduce costs from tens of thousands to just a couple thousand dollars monthly
- Practical approaches to monitoring GPU workloads in production, including handling unpredictable failures and VRAM consumption issues

Watch (or listen to) it here: https://ku.bz/wP6bTlrFs

🌟 This episode is brought to you by StackGen! Don't let infrastructure block your teams. StackGen deterministically generates secure cloud infrastructure from any input - existing cloud environments, IaC or application code https://ku.bz/t0gBX9qQz

With @Birthmarkb "SWAG expert" Farrell

Learn how to simplify certificate management in your Kubernetes workloads with a scalable and automated solution.

Discover how Kyverno, Helm, and cert-manager can help you achieve consistent and secure deployment across your environment.

More: https://ku.bz/-Gd2LvSN9

kube-bench is a tool that checks whether Kubernetes is deployed securely by running the checks documented in the CIS Kubernetes Benchmark.

More: https://ku.bz/3J4LYSktJ

Master Kubernetes with Learnk8s' Advanced Kubernetes workshop!

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 online course starts next week: https://ku.bz/DX6TPV4P_

We also run in-person courses and corporate training: https://learnk8s.io/corporate-training

In this article, you will learn how Kubernetes leverages Seccomp, AppArmor, and SELinux to improve container security.

It also covers Pod Security Standards and Admission Control for safer workload execution.

More: https://ku.bz/jcBT3fxfX

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.

More: https://ku.bz/S5yCJ0M9p

This week on Learn Kubernetes Weekly 122:

🚀 Super-scaling Open Policy Agent with batch queries
🟥 Auto-scaling with KEDA using custom RED metrics from Prometheus
🚅 Building a Reliable Notification Service: Solving Duplication and Scaling Issues
🪞 The power of preview Deployments: catching bugs before they bite using Argo CD
📈 Performance testing Kubernetes workloads

Read it now: https://learnk8s.io/issues/122

⭐️ ⭐️ 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 https://ku.bz/bhzp6DYBs

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.

More: https://ku.bz/ysJcKWqSG