Career
BGP Route Flap: The Cost of Stability in Scalable Networks
I explore BGP route flap issues, their impact on network stability, and how I've managed such incidents in my own operations, drawing from my experiences.
#system-admin
12 posts found.
Career
Dependency Vulnerability Pattern: Management Status in Small Projects
I examine the challenges of dependency vulnerability management in small projects, the patterns I've encountered, and my pragmatic solution approaches.
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.
Career
Cardinality Explosion: Should Every Detail Really Be Observed? And
What is cardinality explosion in monitoring systems, why does it happen, and how does this situation affect both systems and an engineer's career? Practical...
Technology
Secret Rotation: Practical Ways to Enhance Security
Regularly rotating secrets in systems is a critical security step. Drawing from my own experiences, I'll discuss secret rotation strategies and practical...
Career
Reducing Pager Fatigue: Why Excessive Alerting Systems Fall Short?
Analyzing pager fatigue and the shortcomings of excessive alerting systems with my operational experience accumulated over the years. Real problems...
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.
Technology
✍️ Hand-written
The Silent Death of the System: OOM Killer and My VPS Journey
A detailed look at the Out-of-Memory (OOM) Killer incidents I experienced on my VPS, the intricacies of system memory management, and the silent deaths caused.
Tutorials
Guide to Detecting and Limiting Resource-Hog Containers on a VPS
I'm sharing a step-by-step guide on how I identified resource consumption issues on my own VPS and applied limits to Docker containers.
Career
✍️ Hand-written
Docker Disk Fire: Root Cause Analysis on My 7.6 GB VPS
I deeply investigated Docker disk space issues on a small VPS, from image layers to logs, and shared practical solutions.
Life
✍️ Hand-written
My Server's Crisis Moment: An Alert During Family Dinner
I'm sharing a first-hand account of an unexpected crisis on my own server, the alerts that came in during a family dinner, and the debugging process that.
Life
The Burden of Being the Only Expert: A Sysadmin's Loneliness
Discover the challenges of being the sole expert as a system administrator, the loneliness it brings, and strategies for coping with that burden. Work-life…