Tutorials
In-depth technical tutorials, guides, and infrastructure best practices.
Ubuntu VPS Docker Setup: Install Docker + Compose the Right Way
Set up Docker on your Ubuntu VPS so you can run apps in containers safely, with a few clear steps and basic security in place.
How to Build a Local AI Lab: Train Transformers at Home
Build a focused GPU home lab for training transformer models by choosing the right cards, storage, cooling, and topology so your rig runs serious LLM workloads efficiently.
Why Bare Metal Kubernetes LoadBalancer is Pending and How to Fix it
Build robust Kubernetes networking on bare metal by wiring CNI, BGP, and load balancing so Pods, Nodes, and external traffic all talk cleanly without hidden cloud magic.
Fix Reverse Proxy Limits on Dedicated Servers
Fix reverse proxy bottlenecks on powerful dedicated servers by profiling TLS, buffers, and keepalives so your proxy stops capping throughput before your backend does.
Troubleshooting Nginx Upstream Timeout: 504 Gateway Error
Fix Nginx upstream timed out errors by tuning timeouts, debugging slow backends, and hardening your config so requests stay fast and stable under load.
How to Design Production Logging Without Destroying Performance
Design a production-ready logging strategy that structures, centralizes, and tunes logs so you can debug production issues fast without drowning in noise.
Troubleshooting NUMA Latency on Multi-Socket Servers
Master NUMA bottlenecks on modern multi-socket Linux servers. This guide shows you how to detect locality issues, tune memory and CPU placement, and reclaim lost performance.
Why Your Firewall is Killing Your Network Speed And How to Fix It
Fix firewall throughput drops by watching CPU and interface errors, simplifying and reordering heavy rules, and scaling hardware or offloading filtering instead of pushing one overloaded firewall to its limits.
Resolving High-Traffic NAT Latency and Packet Loss
Fix NAT performance bottlenecks by watching CPU and conntrack load, increasing NAT table size and timeouts as needed, and scaling out with multiple NAT gateways instead of one overloaded box.
How to Fix OpenSearch Flood Stage and Disk Watermark Errors
Fix OpenSearch disk watermark errors by freeing disk on the fullest nodes, clearing the read‑only block on affected indexes, and tuning watermark thresholds so you don’t hit flood stage again.
How to Fix Container CPU Throttling and Latency in Docker and Kubernetes
Fix container CPU throttling by monitoring cgroup throttling metrics, then raising or removing strict CPU limits or using CPU pinning so your app can actually use the idle CPU on the node.
Detect and Fix Database Locking Issues without High CPU
Database locks can freeze your queries without spiking CPU, making them hard to spot. This guide shows you how to find locked queries fast and fix them the right way.