DevOps & Cloud

A battle-tested troubleshooting and configuration guide to resolving NVIDIA driver breakages after Linux kernel updates, fixing DKMS build errors, signing modules for Secure Boot, and configuring smooth Wayland rendering.

A masterclass in Linux networking: diagnosing elusive packet loss and latency with ss, tcpdump, and traceroute, hardening firewalls with NFTables/UFW, and tuning TCP kernel parameters for high throughput.

A step-by-step production guide to building your own private WireGuard VPN gateway on a Linux VPS with kernel-level performance, Unbound recursive DNS, and mobile QR-code onboarding.

A complete production guide to replacing Cron with systemd services and timers. Learn service templating, cgroups memory limits, persistent timer scheduling, and journalctl debugging.

A production guide to managing Linux servers with Ansible. Master idempotent playbooks, structured Roles, Jinja2 templating, and AES-256 credential encryption with Ansible Vault.

A production guide to scaling PostgreSQL for high-throughput workloads: eliminating connection process bloat with PgBouncer, sizing shared_buffers and work_mem, partial & BRIN indexing, and tuning autovacuum to prevent table bloat.

A definitive, battle-tested guide to securing Docker containers in production: eliminating root privileges, multi-stage minimal builds with Distroless and Alpine, dropping Linux capabilities, read-only root filesystems, resource limits, and vulnerability scanning with Trivy.

A practical, production-tested guide to optimizing Linux sysctl parameters, TCP backlogs, socket reuse, BBR congestion control, and file descriptor limits to handle 100k+ concurrent requests without dropped connections.

A comprehensive deep dive into atomic symlink switching, OPcache clearing, queue worker graceful restarts, and automated GitHub Actions pipelines for zero-downtime Laravel 12 production deployments.