Tutorials
Why Unstructured Logging Falls Short: My Field Experiences
I examine the problems of unstructured logging I've encountered in systems, the parsing nightmare, and real-time analysis challenges through my own experiences.
#troubleshooting
20 posts found.
Career
Solving Network Issues with VPN Dual-Stack Configuration in 3 Steps
Learn how to resolve network connectivity issues by configuring IPv4 and IPv6 simultaneously in your VPN. Detailed steps and practical tips.
Tutorials
Logs vs. Metrics: Which is More Effective for Troubleshooting?
Explore the differences between logs and metrics for troubleshooting, their strengths and weaknesses, and when to use each in detail.
Life
The Mysterious Quirk of the AI Pipeline: Sunday Morning Debugging
I'm sharing how I step-by-step resolved an unexpected error I encountered in an AI pipeline on a Sunday morning, and the lessons I learned from the process.
Life
✍️ Hand-written
Swap Fire on My VPS: A Nightmare That Started with a Kernel CVE Patch
I detail the process that began with my VPS's swap usage suddenly spiking and the system crashing, including the kernel CVE patch and the steps I took to.
Technology
Cloudflare Cache's Blind Spot: The Cost of Bypass Rules
I explain the unexpected effects of Cloudflare cache bypass rules and how I overcame them with Nginx to improve performance. My experiences on my own VPS.
Tutorials
The Network's Blind Spot: Chasing MTU Mismatches
Discover the MTU mismatch behind mysterious issues affecting your network performance. In this detailed guide, learn what MTU is, how to diagnose problems, and…
Technology
BGP Neighbor Wars: The Hidden Collapse of the Network
BGP neighbor wars can lead to a hidden collapse of your network. In this guide, dig deep into BGP neighbor problems and their solutions.
Technology
Stealth Resource Contention in Containers: Problems and Solutions
Learn about stealth resource contention issues in containerized environments and effective solutions to this complex problem.
Tutorials
The Prometheus High Cardinality Crisis: A Silent Metric Invasion
A guide to understanding, detecting, and managing the high cardinality crisis in Prometheus. Optimize your metrics to keep system performance and costs under…
Career
The Legacy of an Old Internal Load Balancer: An Engineer's Test
An old internal load balancer fails unexpectedly — and shapes the technical and career-defining test it puts an engineer through.
Tutorials
Hidden Kernel Panic Battles: System Betrayal in Production
A field guide to understanding, preventing, and recovering from kernel panics in production. How to keep your systems stable.
Tutorials
Hunting Hidden Blackholes in Production Networks: An Anatomy of…
Find the invisible blackholes in your production network. Understand why traffic disappears, and walk through how to debug it step by step.
Career
The Zombie Process Hunt in Production: Anatomy of a Hidden…
A detailed look at the 'zombie process' problem in production environments and how to analyze and resolve this hidden form of resource waste.
Tutorials
Cloud Firewall Policy Conflicts: An Operational Nightmare
An in-depth look at the operational impact of cloud firewall policy conflicts and how to resolve these issues.
Life
Hidden IP Conflicts in Production: The Invisible Network War
Take a detailed look at the causes, consequences, and remedies for the hard-to-detect hidden IP conflicts that pop up in production environments.
Career
Packet Loss in a Multi-Layer Network: Fighting a Performance Killer
Learn the causes of packet loss in multi-layer networks and how to deal with this hidden performance killer. Optimize your network performance.
Tutorials
Kubernetes Network Policy Errors: A Battlefield at Midnight...
A comprehensive guide to fighting Kubernetes Network Policy errors. Understand common pitfalls and save your night with practical solutions.
Tutorials
How a Hidden DNS Bug Brought Down a Network Architecture: A Case Study
Learn through a case study how a hidden DNS bug threatening network architectures can spiral into a full-blown disaster. Don't miss this deep dive.
Technology
MTU and PMTUD Blackhole: An Incident Runbook
When some users work and others don't, a frequent cause is broken PMTUD and an MTU blackhole. Diagnosis steps and a permanent fix.