SadServers Day 9: Closing an Open File Without Killing the Process
Sep 24, 2025 · 3 min read · Have you ever come across a situation where a critical file is locked by some running process and the usual sudo kill hammer isn't an option? That was my challenge in the SadServers Oaxaca scenario. The requirement sounded deceptively simple: the fil...
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SadServers Day 8: A Day Decoding Kubernetes Pod Rescheduling
Sep 17, 2025 · 3 min read · The Problem Statement Earlier today, I came across a scenario on SadServers that felt pretty close to what real-life SRE/DevOps work throws your way: there’s a Kubernetes cluster running with two worker nodes. Each node is hosting pods created using ...
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Sadservers Day 7: Resolving the Classic Kubernetes CrashLoopBackOff Issue
Sep 11, 2025 · 2 min read · The Problem Statement There are two pods: "logger" and "logshipper" living in the default namespace. Unfortunately, logshipper has an issue (crashlooping) and is forbidden to see what logger is trying to say. Could you help fix Logshipper? Do not cha...
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Sadservers Day6: Renewing SSL certificates
Sep 7, 2025 · 2 min read · Problem Statement Today’s challenge involved an expired SSL certificate on an Nginx server serving a “Hello, World!” page over HTTPS. The goal: generate a new certificate with identical issuer and subject details, ensuring seamless security and confi...
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Sadserver Day 5: Troubleshooting a PostgreSQL Connection Issue
Aug 28, 2025 · 3 min read · Today’s server story is about a failing database connection. A web application was trying to connect to PostgreSQL 13 on one of our servers, but the connection simply wouldn’t work. Let’s walk through the problem, the investigation, and the fix. The ...
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Sadservers Day2: Sherlock Holmes and the Case of the Noisy IP
Aug 19, 2025 · 3 min read · After an on-call shift at work, it took some real strength to pick up Day 2 of Sadservers.com puzzle, but I’m glad I mustered up the courage. Here’s how it went: The Problem Statement There's a huge web server access log at /home/admin/access.log, wi...
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Scenario: "Manhattan": can't write data into database.
Jun 26, 2024 · 2 min read · Lets make a server happyhttps://sadservers.com/scenario/manhattanFrom the description we know - postgres database running on 5432 port. config file at /etc/postgresql/14/main/postgresql.conf writes to disk at data_directory as mentioned in config ...
Join discussionScenario: "Cape Town": Borked Nginx
Nov 27, 2023 · 2 min read · Problem - https://sadservers.com/newserver/capetown From the description we know - nginx server running on port 80 yeah, that's it Step 1 : checking nginx status systemctl status nginx it's in failed statusStep 2 : gotta look at logs cd /var/log...
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