“How much memory does a Kubernetes node use without the Kubernetes layer”? This is exactly the question From RSS to WSS: Navigating the Depths of Kubernetes Memory Metrics tries to figure out.

And the answer to this question might be harder to get to, as it seems at the first glance.

#kubernetes #systems

For today's donations Monday, I'd like to share once again the standing Monobank jar for FPV equipment.

This jar is for the unit in which a guy from my wife's hometown serves.

https://send.monobank.ua/jar/4WLw91UqFe

#donations #Monday

Wanna become a true Terraform SLOPerator?

Here is a carefully vibecoded solution by Anton Babenko. I can confirm that he checks the docs at least once during his Claude conversations, so you can be confident in the quality :)

Jokes aside, this is a cool Skill for Claude Code, which currently works better than any other official or popular alternative out there.

#terraform #ai #claude

Bring Back Ops Pride is a new article by Charity Majors on how it comes that the operational work is often seen as of lower importance, and why is it bad.

This is her answer to the comments under her another article “You Had One Job”: Why Twenty Years of DevOps Has Failed to Do it. This article has some interesting ideas, but it's a marketing material, so beware.

#ops #culture

Unfortunately, kubectl flame tool for profiling in Kubernetes wasn't updated in 4 years. It cannot even run on ARM-based machines.

But what if you need to profile something in your systems? You can use continuous profiling, if it's available in your observability stack.

Or you can use kubectl prof to do some ad-hoc profiles.

- Tool on GitHub
- Medium post

#kubernetes #performance

A book bundle for exam and interview preparations from Manning press.

I'm not sure how good are those books outside the context of interviews, but Manning books usually considered good.

#books

I know that the last thing you'd like to see on Wednesday is yet another remote code execution possibility in Kubernetes, but here you are.

Kubernetes Remote Code Execution Via Nodes/Proxy GETPermission

and here's a lab for that.

tl;dr: web sockets use GET to initiate a connection and then upgrade it, but the permissions are only checked for GET, regardless of what you send through that web socket later. Thus, read permissions are enough to run some code.

P.S. This news came from the chat. If you want to join our chat (in Ukrainian), you can use this link.

#kubernetes #security

Some time ago, I posted here an article from a well-known company on how they use Terraform.

When I was reading that article, I had a thought: “C’mon, I also can write crap like that!”.

So I did!

I hope you like it!

#terraform #oc

The first newsletter of this year is live!

https://newsletter.catops.dev/p/catops-digest-2026-01-30

#newsletter #digest

A book bundle for Solutions Architect exam preparations from Packt.

Packt didn’t have the best reputation, but the topic may be interesting to many people in this channel.

#books

​​For today’s Donations Monday, let’s help our friends from DevOps 01 chat to buy an EcoFlow for 154s Separate Mechanized Brigade.

https://send.monobank.ua/jar/5fYjQVfvFA

There’s just a small push left!

#donations #Ukraine

Hello Kubernetes Community,

Multiple issues are disclosed today in ingress-nginx, and assigned the following CVE IDs: CVE-2026-1580, CVE-2026-24512, CVE-2026-24513, CVE-2026-24514.

The most serious of these issues have been rated HIGH (CVSS calculator, score: 8.8).

https://groups.google.com/a/kubernetes.io/g/dev/c/9RYJrB8e8ts?pli=1

A Friday read for y’all.

A collection of AI slop reports security reports to the curl project.

This eventually forced the curl team to halt their bug bounty program on Hackerone.

Here’s also a FOSDEM talk by Daniel Stenberg - the creator of curl - on how to survive the avalanche of AI generated code.

#ai #slides #fosdem

Two bundles on Humble Bundle:

- Linux for Seasoned Admins by O’Reilly. This is a reoccurring bundle, so check if you have it already before buying!
- Networking bundle by Pact. This is a video bundle to prepare for various certification exams.

#books #bundle

Some results of a fun testing of different LLMs to generate Terraform code.

This article is old, but they have updated the results in mid 2025. Anyways, keep in mind that since then, LLMs evolved. So, even those results are not quite correct anymore.

Still, it’s an interesting test that you can also do yourself. Another point is that LLMs are already quite usable to generate Terraform code.

#terraform #ai

Continuing the topic of Terraform, here's an article from a friend of mine on how to keep the versions of Terraform binaries, modules, and providers in check.


This article was already featured in Anton's newsletter, but it won't hurt to re-iterate. If you're into Terraform, make sure to subscribe, tho.

P.S. If you're hiring in DE, CH, LU, DK, or remote; he has his CV on his blog. You know what to do 😉

#terraform

From CatOps with love: a new issue of our newsletter is here!

https://newsletter.catops.dev/p/catops-digest-2026-02-14

#digest #newsletter

​​Support a friend of mine on the Frontline!

Last year, she chose the tough path: Combat Medic.
Now, she needs our help to secure critical medical supplies that can't wait for paperwork.

No donation is too small. Let’s help her save lives!

- Mono Jar: https://send.monobank.ua/jar/75jQXw6aYq
- Mono: 💳: 4874100025644306
- Privat: 💳: 5168745027810065

#donations #Ukraine