Profiling Linux Code with perf and Flamegraphs
A hands-on guide to sampling CPU call stacks with perf and rendering them into flamegraphs that clearly expose the real hot functions in your code.
Hardware & Performance8 min read
NetBay journal
Guides for operators
Practical guides for Linux, containers, CI/CD, self-hosting, and running VPS infrastructure from Netbay Engineering.
499 articles · 24 topics
AllLinuxLinux AdministrationWindowsLinux SecurityLinux NetworkingContainersContainers & OrchestrationKubernetesCI/CDGitHubSelf-HostingBackups & DataDatabasesApp DeploymentDNS & TLSObservabilityEmailAI AgentsAI InfrastructureAPI & AutomationProxiesCloud ArchitectureHardware & PerformanceDevOps Practices
Audit-Log Every Agent Tool Call in Production
Record who called which tool with which args, hash the result, and keep a replayable JSONL trail so incidents have evidence rather than guesses.
AI Agents8 min read
Fedora Server: Who Is It Actually For?
Fedora Server ships the newest kernel and container stack first, then expires in about 13 months. Learn who benefits and who should run an EL rebuild instead.
Linux6 min read
Host-Based Routing: Multiple Apps on One Server
Run several domain-name apps on a single VPS by routing on the Host header with Nginx server blocks or Caddy host matchers, without any port tricks.
Proxies6 min read
Secrets in CI: Store and Scope Them Safely
Handle API keys and credentials in pipelines without leaking them in logs, artifacts, or pull requests.
CI/CD7 min read
Autovacuum, Bloat, and PostgreSQL Table Care
Read n_dead_tup, tune autovacuum for busy tables, and run targeted VACUUM so PostgreSQL 16 reclaims the heap and index space before bloat wins.
Databases9 min read
Deploy Node.js from Git with Pull Build Restart
Ship a Node.js app with a git pull, npm install, build, and restart script so a tagged commit becomes a repeatable Ubuntu VPS deployment path.
App Deployment8 min read
tmux Essentials for Long-Running Sessions
Keep terminal sessions alive across disconnects with tmux: sessions, windows, panes, and persistence.
Linux6 min read
Building Multi-Arch Images with Docker Buildx
Build one image tag for amd64 and arm64 with Docker Buildx, push a single manifest, and verify every platform with buildx imagetools inspect.
Containers8 min read
Building a Self-Hosted Photo Library With Immich
Organize, search, and share your photos with Immich or Piwigo, self-hosted photo libraries with automatic backup, face recognition, and search.
Self-Hosting8 min read
Resource Budgeting for Many Containers on One Box
Budget RAM and CPU across a crowded Docker host with explicit per-service limits and visibility so one runaway container never starves the rest.
Self-Hosting7 min read
Wildcard Certificates: When They Help and Hide Mistakes
Decide when a wildcard certificate helps on a VPS and when it hides hostname mistakes, extra names, and the extra ACME DNS-01 operational cost.
DNS & TLS7 min read