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SadServers @sadservers.com · 30/09/2026

New AWS FinOps hands-on challenge "Auckland": S3 delete & archive old backups sadservers.com/scenario/auc...

SadServers @sadservers.com · 29/09/2026

(Funny they included the cents in the figure). So Linux sysadmin / DevOps / Infra Eng / Cloud Eng / Platform Eng / SRE / flavour of the month whatever want to call it Eng will still be in demand 🙂

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SadServers @sadservers.com · 28/09/2026

New SadServers AWS cli scenario "Istanbul": Delete unattached AWS EBS volumes , a pretty common cloud engineering task sadservers.com/scenario/ist...

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SadServers @sadservers.com · 27/09/2026

Waterloo Rocketry Reaches New Heights With World's Highest Amateur Liquid Bi-propellant Rocket. SadServers, another endeavour from Waterloo reaching new heights is happy to sponsor them! 🚀 www.waterloorocketry.com

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SadServers @sadservers.com · 27/09/2026

New SadServers scenario based on a real situation: needing to renew a TLS/SSL certificate and having many keys from different certificates without documentation of which key matched the certificate sadservers.com/scenario/sal...

sadservers.com

SadServers: "Salzburg": The TLS key that still matches - nginx, ssl Troubleshooting Lab

Linux Troubleshooting Labs Interview DevOps SRE

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SadServers @sadservers.com · 23/09/2026

love.sadservers.com/t/46b41eb1-4...

I've been using SadServers as part of my hands-on DevOps learning path, and it's honestly one of the best tools I've found for building real troubleshooting instincts. SadServers drops you into an actual broken environment and makes you diagnose and fix it yourself. That's exactly the kind of pressure-tested practice that sticks.

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SadServers @sadservers.com · 21/09/2026

Brave is a privacy-focused search engine with its own index. Glad to see more people coming to SadServers from it search.brave.com

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SadServers @sadservers.com · 20/09/2026

New optional SadServers UI for registered users (need to log in, Beta) pager.sadservers.com 🚀

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SadServers @sadservers.com · 19/09/2026

Tools in our SadServers stack that we love: - @tailscale.com : simple VPN - @sentry.io : application alerts, metrics and logs (especially vs datadog pricing) - @plausible.io: awesome Open Source Google Analytics alternative - Sqlite3: fast database in a file simplifies a lot of things

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SadServers @sadservers.com · 18/09/2026

Four users so far have been able to solve the super-hard "Cadiz" SadServers scenario. Not for the faint of heart; here's the comment of one of those special users: love.sadservers.com/t/5d5b11fc-d...

love.sadservers.com

Testimonial from S Orekhivskyi

this is so good. i spent 8 days on cadiz in between exams. was pain and torture and i cried a bit but i did it and even made a script to automate it. worth every second if you love being desperate eno...

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SadServers @sadservers.com · 11/09/2026

New #Linux SadServers scenario "Dakar": The half-installed package , what happens if an apt package is not fully installed? practice on a live server sadservers.com/scenario/dakar

sadservers.com

SadServers: "Dakar": The half-installed package - Packages, realistic-interviews Troubleshooting Lab

Linux Troubleshooting Labs Interview DevOps SRE

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SadServers @sadservers.com · 11/09/2026

Last SadServers bulletin: list.sadservers.com/archive/0f93... We released 7 new scenarios in the last 4 weeks plus new features 😀

list.sadservers.com

SadServers Newsletter #22: more scenarios 🤔

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SadServers @sadservers.com · 10/09/2026

Our hardest #Linux scenario yet, expecting very few people to solve it (AI agent couldn't after millions of tokens). Thinking of giving out a prize for defusing the bomb 💣 : sadservers.com/scenario/cadiz

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SadServers @sadservers.com · 09/09/2026

Canada just rebuilt 4 nuclear reactors at Darlington. 4 months EARLY. C$150M UNDER budget. They didn't work on the reactor but a copy of it, some "DevOps' practice here 😀 x.com/BenArendi/st...

x.com

Bensu.eth (@BenArendi) on X

They didn't practice on the reactor. They practiced on a copy of it. Ontario Power Generation (the state-owned company) built the world's first full-scale reactor mockup and had crews rehearse the fu...

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SadServers @sadservers.com · 08/09/2026

New #kubernetes SadServers scenario "Kyoto" . Investigate and troubleshoot why a recent change is making an API fail, and fix it. sadservers.com/scenario/kyoto

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SadServers @sadservers.com · 07/09/2026

Checklists are a great tool for DevOps/SRE professionals; a must-have for production procedures of any complexity. The book "The Checklist Manifesto" is a good read and the related podcast is just 1 hr tinyurl.com/rkhsenej

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SadServers @sadservers.com · 05/09/2026

Docker healthchecks can be confusing, we explore them in this new SadServers scenario "Spa": The Docker Compose healthcheck that does not heal sadservers.com/scenario/spa

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SadServers @sadservers.com · 31/08/2026

New SadServers scenario "Hangzhou", a bit advanced NGINX QA configuration challenge sadservers.com/scenario/han...

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SadServers @sadservers.com · 30/08/2026

New SadServers scenario "Nara": No ls on this system This is a fun challenge where we took out 'ls' and 'find', still there are at least 9 ways in this server to list and find a target file in a directory structure (and we learn something ourselves 😄) sadservers.com/scenario/nara

sadservers.com

SadServers: "Nara": No ls on this system - linux-other, bash Troubleshooting Lab

Linux Troubleshooting Labs Interview DevOps SRE

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SadServers @sadservers.com · 26/08/2026

Not sure if to laugh or to cry; getting phishing attempts impersonating my own service 🫤

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SadServers @sadservers.com · 25/08/2026

We'd rather spend time adding tangible value to our users (new scenarios, new features) than doing maintenance. BUT it can be argued a security issue -even if unlikely - could affect users, so we upgrade to keep our bar of no dependencies with Critical or High vulnerabilities.

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SadServers @sadservers.com · 25/08/2026

It's been 35 years since Linus announced his Linux hobby project. It's a light one but I'm surprised not a lot of people have heard about his book talking about the early years. Same with Kernighan's book, which is a great read and anybody in the Unix/Linux world should read imho.

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SadServers @sadservers.com · 24/08/2026

New pricing page. Allows for upgrades directly from the page while blocking things like a distracted user buying a second subscription (it has happened). Also ask and you shall receive: new individual "lifetime" purchase option for the super fans. sadservers.com/pricing

sadservers.com

SadServers: DevOps & SRE Labs | Job Interview Prep & Assessment

Linux Troubleshooting Labs Interview DevOps SRE

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SadServers @sadservers.com · 24/08/2026

Have we invented a better command dependency tool (DAG) than "make"? it's from the 70s and I use it all the time (my cli is all 'git' and 'make' with the occasional 'docker')

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SadServers @sadservers.com · 23/08/2026

"overnight success" 😀 SadServers has been updated every week in the last two years, either code or scenarios (weekends especially productive, one gap due to external emergency)

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SadServers @sadservers.com · 21/08/2026

When you take out playwright testing our of your Docker image 🤏

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SadServers @sadservers.com · 18/08/2026

another case of retrying making things worse when there's a lot of traffic www.githubstatus.com/incidents/zk...

githubstatus.com

Incident with GitHub.com

GitHub's Status Page - Incident with GitHub.com.

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SadServers @sadservers.com · 18/08/2026

Called this back in May. Copilot has different price tiers now with a high-cost one coming up.

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SadServers @sadservers.com · 17/08/2026

😠 www.githubstatus.com guess we'll have to develop locally, like our ancestors did

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SadServers @sadservers.com · 12/08/2026

New #Linux practical SadServers challenge "Bergen": Port already in use (kind of giving a clue here) , how fast can you fix this issue? sadservers.com/scenario/ber...

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SadServers @sadservers.com · 11/08/2026

Last SadServers newsletter went out list.sadservers.com/archive/3441... Sign up so you don't miss new scenarios and news list.sadservers.com/subscription...

list.sadservers.com

SadServers Newsletter: new challenges!

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SadServers @sadservers.com · 11/08/2026

New Linux SadServers scenario "Vienna": The Vanishing Process, a systemd hands-on challenge sadservers.com/scenario/vie...

sadservers.com

SadServers: "Vienna": The Vanishing Process - systemd Troubleshooting Lab

Linux Troubleshooting Labs Interview DevOps SRE

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SadServers @sadservers.com · 10/08/2026

Gitea is a self-hosted CI/CD platform. Check out SadServers latest practical challenge involving this tool: sadservers.com/labs/gitea/

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SadServers @sadservers.com · 08/08/2026

Using Sentry for incident, logs and metrics. It's way cheaper than DataDog and the cost can be anticipated (you can cap it too).

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SadServers @sadservers.com · 04/08/2026

If the AI support agent of a multibillion company like @stripe hallucinates a dashboard option and highlights in a statement the opposite of reality, imagine what the AI agents doing support on other sites are saying. (Unlike other sites at least with Stripe I can RTFM)

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SadServers @sadservers.com · 28/07/2026

New SadServers PostgreSQL challenge "Luxor" sadservers.com/scenario/luxor

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SadServers @sadservers.com · 27/07/2026

AWS spot instances: - Within the same region, price can vary a lot among AZs (eg less than half). - An instance type that's more expensive on-demand may be cheaper as a spot instance. (eg t3 and t3a) - Spot capacity can suddenly disappear, need to prepare for it.

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SadServers @sadservers.com · 22/07/2026

This brought so many memories, just released: The Java Story | The Official Documentary www.youtube.com/watch?v=ZqGS...

youtube.com

The Java Story | The Official Documentary

YouTube video by CultRepo

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SadServers @sadservers.com · 17/07/2026

Almost had a heart attack but it's all good, some AI agent at AWS woke up with a sense of humor

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SadServers @sadservers.com · 03/07/2026

Xin chào Việt Nam 🇻🇳

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SadServers @sadservers.com · 27/06/2026

Latest SadServers newsletter is out: 7 new scenarios (including Ansible, Terraform and ELK stack ones) and new Lab section 💪 list.sadservers.com/archive/6009...

list.sadservers.com

New scenarios, New labs section 🚀

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