Here goes our latest bunch of interesting Kubernetes-related articles recently spotted online:

1. "My kubernetes pods keep crashing with CrashLoopBackOff but I can’t find any log" by Harold Finch.

When a Kubernetes pod goes into a CrashLoopBackOff state and you can't find any logs, it can be frustrating. Here’s a step-by-step troubleshooting guide to help identify and fix the issue.

2. "What we learned after running Airflow on Kubernetes for 2 years" by Alexandre Magno Lima Martins.

To put it in perspective, we have over 300 DAGs in production, running more than 5.000 tasks per day, on average. So I would say that we have a medium-size Airflow deployment, capable of delivering value for our users. For more than 8 months now we have been running without a single incident or failure in Airflow. With this post, I want to share important aspects of our deployment that helped us to achieve a scalable, and reliable environment.

3. "Falco" by Luc Juggery.

The following gives an overview of Falco, a security tool that provides runtime security across hosts, containers, Kubernetes, and cloud environments. [It covers:] Installing Falco, Enabling falcosidekick, Enabling falcosidekick web UI, and Custom events.

4. "Demo an Automated Canary Deployment on Kubernetes with Argo Rollouts, Istio, and Prometheus" by Whitney Lee, a CNCF Ambassador.

Building stuff is fun! Let’s use Argo Rollouts, Istio, and Prometheus to automate a canary deployment on Kubernetes! The application we’ll run is the Argo Rollouts Demo Application which does a great job of visualizing how traffic is slowly routed from from the older, stable version of the application to the newer “canary” version.

5. "Getting Started with K3s: A Practical Guide to Setup and Scaling" by Joseph Whiteaker.

This post serves as both an introductory guide for those new to K3s and a quick reference for those already familiar with it. We’ll cover installation, adding server and worker nodes, configuring load balancing, etc…

6. "Kubernetes Control Plane Load Balancing (CPLB) Explained" by Juan Luis de Sousa-Valadas, Mirantis.

CPLB, with its evolution to a userspace reverse proxy load balancer, offers a simplified and more compatible approach compared to the previous IPVS-based system. When combined with k0s it is possible to build lightweight, but highly available Kubernetes clusters.

#articles

Kubescape became a CNCF incubating project

Created in ARMO, Kubescape is a security platform for Kubernetes that offers hardening, posture management, and runtime security capabilities. It scans clusters, YAML files, and Helm charts and detects various misconfigurations. In December 2022, CNCF accepted it as a Sandbox project; last month, the CNCF TOC voted to move it to the incubating level.

More details: official announcement; incubation issue.

#news #security #cncfprojects

Managing GenAI workloads on Kubernetes is surely gaining momentum. If it piques your interest as well, consider this new Open Source project.

LLMariner is an extensible platform for hosting and managing LLMs on K8s. It consists of a control plane and worker planes, which can be run in a single or across multiple Kubernetes clusters. Some of the project’s highlights are:

- Support for various inference runtimes, including vLLM, Ollama, and Triton.
- Support for numerous models (Llama 3.1, Gemma, TinyLlama, DeepSeek Coder, Mistral, and more), as well as other models via HuggingFace.
- Works with Retrieval-Augmented Generation (RAG).
- Allows to fine-tune models, run general-purpose training jobs, and run Jupyter Notebooks.
- User management via Dex and access control via organizations and projects.
- Integrates with Open WebUI and other tooling via OpenAI-compatible APIs.

Language: Go | License: Apache 2.0 | 53 ⭐️

▶️ GitHub repo
📢 Reddit announcement

#tools #genai

In January, the CNCF TOC accepted 13 Open Source projects to the CNCF Sandbox. We covered all of them in this post. Last week, another batch of 5 new projects was approved to join CNCF. Here they are:

1. interLink — an abstraction to execute a Kubernetes Pod on any remote resource that can manage the container execution lifecycle. It leverages the Virtual Kubelet technology to simplify the development of provider-specific plugins. [#343]

2. Cozystack — a PaaS platform and framework for building clouds with easily deployed Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, and more. [#322]

3. kgateway — a Kubernetes-native ingress controller and API gateway that is built on top of Envoy proxy and the Kubernetes Gateway API. As we mentioned, this project originates from Gloo Gateway. [#319]

4. KitOps — a packaging, versioning, and sharing system for AI/ML projects that is built upon the OCI standard and is Kubernetes-ready. [#313]

5. Hyperlight — a lightweight virtual machine manager library for safe execution of untrusted code within micro virtual machines in the applications. [#312]

Welcome aboard! 🤗

#news #cncfprojects

Here comes our newest digest of the prominent software updates in the Cloud Native ecosystem!

1. Semaphore, a CI/CD platform, released the v1 version of its CE edition which went Open Source with this release. You can run it on Kubernetes clusters, and it offers numerous features, such as fast builds and deployments, parallel execution, visual editor, artifacts, self-hosted agents, GitHub and BitBucket support, Slack and webhook notifications, and more.

2. Dapr, a serverless, event-driven runtime for building distributed apps (a CNCF Incubating project), announced 1.15 with numerous updates. These include a stable Workflow engine for writing long-running stateful apps, a rewritten Actor runtime engine, a stable Scheduler service, a new Conversation API to talk to LLM providers (alpha), and a bunch of SDK improvements.

3. Envoy (a CNCF Graduated project) has announced the first version of Envoy AI Gateway — v0.1. This project leverages Envoy Gateway to handle request traffic from application clients to GenAI services through a unified API while managing authorization, cost control, and scalability.

4. Hyperlight, a lightweight virtual machine manager (it became a CNCF Sandbox project just recently), reached its v0.2.0, which added support for Azure Linux 3 and support for Hyperlight KVM guest debugging using gdb, as well as removed custom alloca (in favour of Clang built-in alloca).

5. Istio (a CNCF Graduated project) released its 1.25, featuring DNS proxying by default for ambient mode, default deny policy for waypoints, and zonal routing enhancements.

6. Shipwright, a framework for building container images on Kubernetes (a CNCF Sandbox project), was updated to v0.15. This release allows controlling which nodes a build can run on, tolerate node taints for builds, and use custom Pod schedulers.

#news #releases

Yesterday, Solo.io announced its new Open Source project called kagent. It is a Kubernetes-native framework for DevOps and platform engineers to build and run AI agents that will automate configuration, troubleshooting, and other similar tasks.

kagent uses custom resources to define the AI agents and tools used by those agents, and offers CLI and web UI to manage them. The project also boasts the tools registry, where you can find predefined functions for interacting with Kubernetes, Prometheus, Istio, Argo, Helm, and other projects.

The tool is written in Python, based on the AutoGen framework, and licensed under the Apache 2.0 license. The authors plan to donate the project to the CNCF. Learn more about kagent on its website, GitHub, and in this announcement.

#news #tools #genai

If you’re wondering which Kubernetes features were introduced/stabilised/deprecated/removed in which K8s versions, this new online resource is extremely useful. Using Kaniuse, you can navigate through 370+ K8s features and see their status in Kubernetes 1.19-1.33, as well as see the difference in their status between any two specific releases.

#news

Here goes our latest selection of interesting Kubernetes-related articles recently spotted online:

1. "Securing the Kubernetes Host Operating System" by Rafael Natali.

If the host operating system is breached, the attacker could use it to target other nodes in the cluster, along with all the Pods and applications running on that node. Eventually, the attacker can even access other systems in your network! The next subsections contain the information necessary to secure the host operating system.

2. "Every pod eviction in Kubernetes, explained" by Ahmet Alp Balkan.

There are so many ways Kubernetes terminates workloads, each with a non-trivial (and not always predictable) machinery, and there’s no page that lists out all eviction modes in one place. This article will dig into Kubernetes internals to walk you through all the eviction paths that can terminate your Pods, and why “kubelet restarts don’t impact running workloads” isn’t always true, and finally I’ll leave you with a cheatsheet at the end.

3. "WebAssembly on Kubernetes" by Nicolas Fränkel.

In this post, I showed how to use Webassembly on Kubernetes with the Wasmedge runtime. I created three flavors for comparison purposes: native, embed, and runtime. The first two are "regular" Docker images, while the latter contains only a single Wasm file, which makes it very lightweight and secure.

4. "Yoke is really cool" by Xe Iaso.

With Yoke, you write your infrastructure definitions in Go or Rust, compile it to WebAssembly, and then you take input and output Kubernetes manifests that get applied to the cluster. [..] One of the big advantages of using WebAssembly here is that you can use the same Kubernetes manifest types that Kubernetes itself uses. This means you don't have to write your own types and you can reuse code aggressively.

5. "Exploring Cloud Native projects in CNCF Sandbox. Part 3: 14 arrivals of 2024 H1" by Dmitry Shurupov, Palark.

We’re continuing this series with our brief introductions to the projects added to the Sandbox in April, June, and July of 2024: Radius, Stacker, Score, Bank-Vaults, TrestleGRC, bpfman, Koordinator, KubeSlice, Atlantis, Kubean, Connect, Kairos, Kuadrant, and openGemini.

6. "How to Setup Preview Environments with FluxCD in Kubernetes" by Meysam Azad.

Preview environment is where you see a live state of your changes from your pull request before being merged into the default branch. It gives you a look'n feel of what it would be like if you merged your changes. [..] in this blog post, I will show you how to achieve this using FluxCD Operator.

7. "Container Network Interface (CNI) in Kubernetes: An Introduction" by Homayoon (Hue) Alimohammadi.

In this article, we’re gonna learn about the Container Network Interface (CNI) and CNI plugins, what they’re supposed to do, and how they’re implemented. We’ll also see a simple CNI implementation in Go and Bash, and test it in a Canonical Kubernetes cluster.

#articles

JobSet is a Kubernetes SIG project that provides a unified API for large-scale distributed HPC and ML workloads on Kubernetes. It models a distributed batch workload as a group of Kubernetes Jobs and uses the abstraction of a ReplicatedJob to manage child Jobs. The project is still in its alpha.

Find more details about JobSet in this recent announcement and on GitHub.

#news #tools

Many Kubernetes users liked Lens (or even still do). After it became not Open Source and Lens ID was introduced, many switched to OpenLens. Unfortunately, that fork did not last long and hasn’t issued any releases since July 2023. However, it turned out to be another fork, which is currently active: Freelens.

This project started around January of this year, and released its v1.0.0 in February and further v1.1.0 just five days ago. Today, Freelens:

- is fully compatible with the latest Kubernetes version (1.32);
- comes with kubectl v1.32.3 and Helm v3.17.2;
- is based on Electron 34.3.3 with Node 20.18.3 and Chrome 132.0.6834.210;
- requires GNU C Library 2.34+ for Linux (i.e. Debian 12, Ubuntu 22.04, Fedora 35, openSUSE Leap 15.4), macOS 11+ or Windows 10+ to run.

Language: TypeScript | License: MIT | 607 ⭐️

▶️ GitHub repo

#news #tools #gui

Don’t miss the news regarding five recent critical vulnerabilities in ingress-nginx, including CVE-2025-1974 scored at 9.8 CVSS!

The Kubernetes blog post states that over 40% of Kubernetes administrators rely on ingress-nginx and should take action immediately. Otherwise, a malicious user with no credentials can take over your Kubernetes cluster by exploiting configuration injection vulnerabilities via the Validating Admission Controller.

The latest ingress-nginx releases, v1.12.1 and v1.11.5, are already available with all five vulnerabilities fixed.

Find more details in this post from the Kubernetes Security Response Committee and this detailed article from Wiz.

#news #security

The next Kubernetes release, v1.33, will become available in a month. Currently, this release is scheduled for 23rd April. The project’s blog has published an early “sneak peek” of some changes we might expect when it’s out.

Particularly, it mentions that Linux user namespaces for Pods are becoming stable, ordered namespace deletion is being introduced, and in-place resource resize for Pods vertical scaling is moving into beta. Find more details in this post.

#news

Since KubeCon Europe is approaching us tomorrow, you can already enjoy numerous great talks at Cloud Native Rejekts Europe 2025. It features two tracks: The Nash (main room) and The Waterloo (side room), where ~50 talks are delivered during two days.

You can find live streams for all these talks on YouTube:
- Yesterday’s recordings:
- The Nash
- The Waterloo
- Today’s streams (they will start in 20 minutes!):
- The Nash
- The Waterloo

P.S. The full schedule for this conference is available here.

#events #video

Amazon EKS introduced a new catalogue of community add-ons, simplifying the use and management of well-known Open Source components in Kubernetes clusters.

Currently, it features metrics-server, kube-state-metrics, cert-manager, prometheus-node-exporter, and external-dns. All of them were packaged and validated for EKS, and hosted in the EKS-owned private ECR. You can work with add-ons via EKS Console, API, CLI, eksctl, and CloudFormation.

Find more details in this announcement and relevant documentation.

#news #AWS

Don't FOMO if you're not at KubeCon London this time. The livestream for KubeCon + CloudNativeCon Europe 2025 keynotes has just started! You can join watching them here today as well as on Thursday and Friday.

Here’s also a short introduction to this KubeCon's Project Pavilion presented by Jorge Castro, a DevRel at CNCF.

Finally, you can see the first videos from yesterday's KubeCon co-located events, such as ArgoCon and Cloud Native Telco Day, uploaded to the CNCF YouTube account already.

#events #video

During today’s KubeCon keynotes, it was announced that Headlamp became a part of Kubernetes SIG UI. You can already see that its official repository is now kubernetes-sigs/headlamp.

SIG UI is a Kubernetes Special Interest Group that “covers all things UI related” to K8s. Originally, its efforts were focused on the Kubernetes dashboard, and now they would be extended to Headlamp. Headlamp was originally created in Kinvolk (acquired by Microsoft in 2021) and became a CNCF Sandbox project in 2023.

#news #cncfprojects #gui

Another interesting announcement from the KubeCon keynotes is that the CNCF has launched its job board, GitJobs, focused on Open Source. It promotes opportunities that contribute back to upstream projects, and posting the job listings there is free.

The platform itself is Open Source, written in Rust and available on GitHub.

#career #news

Yesterday, a Helm fork was announced. It addresses various issues and brings new features to those relying on Helm charts in their Kubernetes deployment process.

Here’s what Nelm, dubbed as a “Helm 3 alternative”, offers:
- Server-Side Apply instead of 3-Way Merge for updating resources;
- advanced resource ordering;
- real-time logs, events, resource statuses, and errors during deployment;
- improved CRD management;
- release plan previewing (similar to terraform plan);
- secrets management.

Language: Go | License: Apache 2.0 | 458 ⭐️

▶️ GitHub repo
📢 Announcement
💬 Reddit discussion

#news #tools

The Linux Foundation Europe launched NeoNephos, a new foundation focused on facilitating a sovereign cloud in Europe. It is backed by European Union funding and supported by the first seven members, including SAP, STACKIT, and T-Systems.

Interestingly, it heavily relies on Kubernetes as its fundamental technology. This is outlined by the list of projects on the NeoNephos website. It includes such Open Source projects as Gardener (a well-known solution implementing Kubernetes-as-a-Service) and CobaltCore (an opinionated OpenStack distribution featuring managed Kubernetes and Kubernetes-based operators for automation).

#news