CatOps

​​Happy Independence Day, cats!

As you know, freedom never comes for free. So, the best way to celebrate this day is to make a donation to your charity of choice.

Here the list of charities I link to almost every post

Also, I would like to remind you about fundraisers from our friends at:

- UkrOps Club
- UA DevOps

Amazing Julia Evans posts about the things she missed in Go.

This is kinda a promotion of the book "100 Go Mistakes and How to Avoid Them" and you know what, now I want to read it!

P.S. Unfortunately, I don't have a chance to write much in Go lately, which makes me sad. Maybe, it will push me towards creating some side-projects, probably, someday, maybe 😭

#programming #golang

​​A fundraiser for equipment for FPV drones by the UkrOps community is still ongoing!

About 40% still left.

You can top up a Monobank jar:

https://send.monobank.ua/jar/6k2H9iu8tN

Or a card directly:

5375411219683781

Original post

#donations #Ukraine

Karpenter (Kubernetes nodes autoscaler by AWS) goes version 1.0 today.

Notable changes are listed in the announcement.

#kubernetes

UA DevOps channel continues raising funds for a Mavik drone for the folks on the Kharkiv direction.

Link to the Monobank Jar: https://send.monobank.ua/jar/2WC8C4npTN

Original post in the channel: https://t.me/devops4ua/566

#donations #Ukraine

A new issue of the CatOps Digest is here!

https://newsletter.catops.dev/p/catops-digest-2024-08-11

#digest #newsletter

A small Saturday post from GetYourGuide on how they migrated from Spinnaker to ArgoCD.

There are not too many details in the article, so the main takeaway is that such migrations can be easier than they seem to be. Still, you need a political will to do that.

P.S. This article came from our chat. If you have other interesting stories to share, you can do it here.

#cicd

The Story of Reformatting 100k Files at Google in 2012 is a short story of rolling a massive change at Google.

Basically, they have enforced formatting rules for all the BUILD files for Bazel.

What I like in this story is how this change ended up being uneventful. Which confirms a point: if formatter is integrated into your workflow, you don't care about formatting, you don't even think about it much.

And this is one of the reasons I like Go so much: it has a formatter integrated into the language itself. Same thing with Terraform.

#culture

OpenTofu 1.8.0 is out.

It's not like I'm following this project very closely. However, now its features started to diverge from Terraform. So, as they put it themselves:

Since Terraform doesn't support these new language features, OpenTofu now supports the .tofu file extension. When a file with the .tofu extension is present, OpenTofu will ignore the identically named .tf file. Using this new file extension, module authors can use the new 
features of OpenTofu and still keep older code around for compatibility.

So, if you support any open-source modules, have fun, I guess.

Also, it's interesting how many of you actually use OpenTofu in production?

#terraform #opentofu

A bit of Ukrainian tech community building.

Recently, our friend from UkrOps Digest asked his subscribers if they have any Telegram/YouTube channels, blogs, or other communities where they share their technical expertise.

Needless to say that there are quite a few responses to that post. I'm sure you'll be able to find something to your taste there as well!

Also, if you have a channel or a blog, make sure to leave a comment there as well. Or even better - make a pull request to the Awesome List of Ukrainian IT Communities!

#community #culture #Ukraine

For today's Donations Monday I have not one but two requests.

1. Folks from the Airbus VYK channel continuously raising funds for drones and related equipment. Subscribe to the channel to see recent fundraisers and detailed reports.

2. Our colleague and an author of the UA DevOps channel is raising funds for a Mavik 3T drone

#donations #Ukraine

The wrong way to use DORA Metrics.

If you’re not aware, so-called DORA metrics are the core metrics DevOps report is built on:

- Deployment frequency
- Lead time for changes
- Change failure rate
- Time to restore service
- Reliability

These metrics are frequently used to measure the performance of a team. So, this article highlights some pitfalls of using DORA metrics for measuring productivity, including, of course, the good old Campbell’s Law.

#culture

Yet another explainer of what has happened to CrowdStrike on July 19th and more importantly, how.

tl;dr: config changes. Config changes can be dangerous too. Despite there were successful deploys between the update of CrowdStrike Scanner and the outage, it seems like a new type of config was deployed which caused the entire clusterfuck.

This line is also interesting:

 June 4th, Red Hat released a KB relating to kernel panics that were caused by the Crowdstrike sensor 
process. This was a bug in the Linux kernel itself, that the sensor was 
triggering and wasn’t Crowdstrike’s fault. However it does prove that config that has passed the Content Validator can cause kernel panics.

UPD: I think the most important take-away here is not what caused the outage or how the deployment process at CrowdStrike looks like. It's the fact that problems can be obscure enough. When something goes wrong big times, it's easy to "blame" a "big thing": the whole deployment process, or code quality, or people behind the software. This is much more comforting than the idea that any small change can cause a butterfly-effect and take your whole system down. This was true for CrowdStrike and this is true for you as well.


#postmortem #crowdstrike #windows

CatOps is more than 7 years old. I hope during this time many of you have got promotions!

Perhaps, some of you have even switched to the management track. Thus, I think this article about 10 common ways engineering managers get stuck may be interesting to you.

Also, it’s written in a peak Internet content form: a numbered list! Items on the list are:

1. Ignoring destructive behaviors
2. Trying to please everyone
3. Fighting too hard for your principles
4. Not spending time building relationships
5. Defining your role too narrowly
6. Forgetting your manager is a human being
7. Neglecting Personal Development
8. Only managing down
9. Only managing up
10. Never managing up

A description of each item is in the article.

#management

​​UkrOps continues raising funds for the Skelyar platoon.

Right now, about a half of the goal is accumulated.

🔗Monobank Jar
https://send.monobank.ua/jar/6k2H9iu8tN

💳 Card number

5375411219683781

A link to the original message:
https://t.me/UkropsDigest/636

#donations #Ukraine

A new issue of CatOps Digest is here!

https://newsletter.catops.dev/p/catops-2024-07-28


#digest #newsletter

Today is the Sysadmin’s day. My congratulations to everyone involved!

In an episode about SRE with Denys Vasyliev there was a point that SRE is just a glorified OPS.

So, I think this ongoing book would be appropriate for today:

Reliability Engineering Mindset.

It’s ongoing and, apparently, you can subscribe to get updates.

#sysadmin #sre #books

Anyone can Access Deleted and Private Repository Data on GitHub

Sounds scary, if you didn't deep dive into how git works and how GitHub hosts it.

TL;DR: If some repo can git fetch upstream - all these fetchable commits will be always accessible from this fork/main repo.
Only after the visibility of the repo changes - new commits will be not discoverable.

For more details and examples, check this article, which was brought to us from CatOps Chat.

#security #git #github

Today I want to share with you some preparation materials for certifications:

- By Sybex Comptia
- By Packt

Also, till the end of July you can get Linux Foundation certificates with a discount!

And last but not least, some Rust books recommendations as a bonus.

#books