December 2025
👋 Intro
Welcome to the December edition of CloudNative.Now - a monthly newsletter that covers all that has been happening in the cloud native world in the past month!
Can you believe it's been a whole year of this newsletter?! 🤯 The time has flown by. If you missed any months, you can always catch up from the archive.
I was originally expecting this issue to be mostly a look back on the past year, anticipating not much happening this month due to the holiday period and general end-of-year slowdown. But it seems that doesn't slow down the cloud native community! 🚀 There has been plenty going on this month from new Kubernetes releases to several open CFPs and a sprinkling of articles around some serious downtime recently.
I hope you've all had a wonderful holiday, whether you celebrate or not, and I wish each and every one of you a truly fantastic new year. 💙 Here's hoping 2026 bring you all everything you want! 🎆
As always, you’re invited to subscribe to the email newsletter or add the RSS feed to your favourite feed reader to make sure you don’t miss anything! And please help to spread the word and recommend this to your friends and network if you find the content useful! 💙
If you have any feedback or have any links you’d like to suggest please reach out on Bluesky or Mastodon! 💬
📰 News & Articles
- Three Core Principles for Sustainable Platform Design - Abby Bangser
Many platforms solve today's problems but don’t scale. Move beyond simple tools to build platforms that pass key value tests and support long-term growth. - Announcing Amazon EKS Capabilities for workload orchestration and cloud resource management - Channy Yun
Big news for EKS users! New EKS Capabilities make EKS cluster more production-ready from day one by providing managed functionality to handle cluster operations. Available at launch: Argo CD, AWS Controllers for Kubernetes and Kube Resource Orchestrator. - Introducing the Technology Matrix - Rawkode
Your new compass for the Cloud Native landscape. Explore, filter, and learn about the technologies that power modern platforms.
I really like what David is trying to do here and think the Technology Matrix is really well presented with some clear categorization. Think a much less overwhelming CNCF Landscape, with some opinionated choice added in to help differentiate between the options. - Canonical Extends Kubernetes Long-Term Support to 15 Years - Steven J. Vaughan-Nichols
I'm not really sure who this is for exactly but if you do want to run the same Kubernetes for 15 years I guess Canonical have you covered. - Announcement: Checkpoint/Restore WG is here! - Viktória Spišaková
A new Kubernetes working group has been set up to discuss and advance checkpoint restore. If that's something you're interested in or are able to help out with please consider joining the working group. - How when AWS was down, we were not - Warren Parad
Nothing can have an unlimited uptime. But even when AWS and other hyperscalers are having incidents, Authress created an architecture that is resilient to those outages. This article covers how they've managed to achieve that and avoid being impacted when many others were. - Cloudflare outage on December 5, 2025 - Dane Knecht
Cloudflare experienced a significant traffic outage on December 5, 2025, starting approximately at 8:47 UTC. The incident lasted approximately 25 minutes before resolution. This is Cloudflare's write up of what happened and how they are improving things. - How the Team Behind Valkey Knew It Was Time to Fork - Steven J. Vaughan-Nichols
Lessons from the Valkey team on breaking away from a company that wants to close your open source project. - Hardened Images for Everyone - Christian Dupuis & Michael Donovan
Docker has released Docker Hardened Images that are now free to use, share, and build on with no licensing surprises. - New Features We Find Exciting in the Kubernetes 1.35 Release - Arsh Sharma
The folks at Metalbear share some of their favourite new features from the Kubernetes 1.35 release.
Read more about this release and its various new features in the Tools section below. 👇 - What's Wrong with Kubernetes Today - Debo Ray
A look at how Kubernetes fails to effectively scale without waste. Covers various bin packing approaches and tools used in Kubernetes today and how they work and where they fall short. - It works on my cluster: a tale of two troubleshooters - Liam Mackie
Kubernetes is hard to troubleshoot. Learn how two teams worked together to troubleshoot a particularly tricky bug.
🔒 Security
- ⚠️ CVE-2025-14269: Credential caching in Headlamp with Helm enabled - kubernetes
If you run Headlamp please take a look at this recently released CVE and make sure you're updated to at least v0.38.0
🧑🏫 Tutorials, Videos & Podcasts
- 📺 Fluent Bit Explained: Data Pipelines for Observability. The Evolution of Cloud-Native Logging - Whitney Lee
Observability begins with data movement: collecting, routing, and analyzing information so it reaches the right place in the right form.
In this episode, Whitney Lee and Eduardo Silva Pereira trace how Fluentd introduced a unified way to move data and how Fluent Bit extended that approach for modern environments. - An End-to-End Cloud Native Observability Framework - Khushboo Nigam
This practical guide walks you through building a unified framework for your applications, Kubernetes clusters and CI/CD pipelines. - 📺 Observability 2.0 with OpenTelemetry: Make Signals Work Together - Whitney Lee
Observability got bigger than “three pillars” and a dashboard. Observability 2.0 is about correlation, not collection, so teams can ask meaningful questions and get useful answers. - 📺 Navigating Kubernetes: Insights, Challenges, and the Release Cycle with Kat Cosgrove - David Flanagan & Laura Santamaria
In this episode of Cloud Native Compass, hosts David Flanagan and Laura Santamaria dive deep into the complexities of the Kubernetes release cycle with guest Kat Cosgrove. - 📺 Navigating Kairos: Immutable Operating Systems with a Cloud Native Twist - David Flanagan & Laura Santamaria
In this episode, David Flanagan & Laura Santamaria dive into the Kairos project, a CNCF initiative aimed at converting any Linux distribution into an immutable operating system. - Kubernetes Optimization using In-Place Pod Resizing and Zone-Aware Routing - Manu Someshwar R
At Halodoc, they improved Kubernetes efficiency using in-place pod resizing to right-size resources without restarts and zone-aware routing to cut cross-AZ traffic. These changes reduced compute costs, lowered latency, and improved overall cluster performance. This post walk through how they achieved it. - 📺 Logging Operator: Multi-Tenant Kubernetes Logging - Whitney Lee
Kubernetes gives every pod a place to write logs, but it leaves the actual logging pipeline up to you. Once you try to ship those logs anywhere, you face choices about collectors, routing, buffering, isolation, and how to keep one noisy team from affecting everyone else. In this episode, Whitney Lee stands at the lightboard with Peter Wilcsinszky to look at why this happens and how the Logging Operator helps. They walk through the realities of node-level collection, what makes routing tricky, and how Flows and Outputs give teams a clear, Kubernetes-native way to control where their logs go. - 📺 Kyverno vs OPA Gatekeeper – Which Policy Engine Rules Kubernetes? - Henrik Rexed
In this episode of Is It Observable?, Henrik dives deep into the ultimate Kubernetes policy showdown: Kyverno vs OPA Gatekeeper.
🧰 Tools
- Kubernetes v1.35.0 - kubernetes
The latest release of Kubernetes is here. v1.35.0 is out with the following new and improved features:- Kubernetes 1.35 "Timbernetes" Introduces Vertical Scaling - Joab Jackson
- Kubernetes v1.35: Job Managed By Goes GA - Dejan Zele Pejchev & Michał Woźniak
- Kubernetes 1.35: In-Place Pod Resize Graduates to Stable - Natasha Sarkar
- Kubernetes v1.35: Kubelet Configuration Drop-in Directory Graduates to GA - Sohan Kunkerkar
- Kubernetes v1.35: Fine-grained Supplemental Groups Control Graduates to GA - Shingo Omura
- Kubernetes v1.35: Introducing Workload Aware Scheduling - Maciej Skoczeń & Dominik Marciński
- Web UI - Flux Operator
Flux CD now has a fancy web UI thanks to Flux Operator.
🎤 Events and CFPs
Events
- 🇬🇧 ContainerDays London 2026 - 11th - 12th February, 2026
ContainerDays is coming to the UK for the first time next year and tickets are now available. I'm going to be giving two talks here! 🤯
If you're looking to grab a ticket, take a look at the ContainerDays LinkedIn account where they've been giving away some free tickets over the holidays. If you're quick you might still be able to grab one! 😉 - 🇳🇱 KubeCon + CloudNativeCon Amsterdam - 23 → 26 March
KubeCon + CloudNativeCon is going back to Amsterdam!
On a personal note, this will be the first time that I'm speaking there! 😮 Very excited about that!
Get 15% off ticket prices with code:KCEU26ABSH15 - 🇯🇵 KubeCon + CloudNativeCon Japan - 29 → 30 July
KubeCon + CloudNativeCon is going back to Japan. This time in Yokohama!
CFPs
- 🇳🇱 Cloud Native Rejekts EU 2026 - Deadline 17th January
- 🇷🇴 Cloud Native Days Romania 2026 - Deadline 7th February
- 🇫🇮 KCD Helsinki 2026 - Deadline 15th February
- 🇨🇦 KCD Toronto 2026 - Deadline 16th February
- 🇩🇪 ContainerDays Hamburg 2026 - Deadline 28th February
💬 Social Post of the Month

🤷 Misc & Fun
- Join the on-call roster, it’ll change your life - Sergey Tselovalnikov
Joining an on-call rotation might change the future of your career – and maybe you as a person. This article shares Sergey's experience being on-call. - Size of life - Neal
Another fun website from Neal that shows the scale of size difference between many forms of life. - Klustered '26 - Live Kubernetes Debugging Competition - Rawkode
David is looking for volunteers to take part in a new season of Klustered. Think your Kubernetes debugging skills are up to the challenge? Apply now! - SERVER: Survival Protocol
Architect infrastructure that survives! - Font with Built-In Syntax Highlighting
An experiment in javascript-free syntax highlighting, made possible by opentype contextual alternates and COLR table.
✨ Feedback Form ✨
That's all for this month!
Thank you for reading! 💙
If you enjoyed this post, please spread the word and share with your friends.
~ Marcus 👋
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