How-To
How to Manage APT Repositories Safely on Ubuntu 24.04
Master Ubuntu repository management: audit sources, add PPAs, verify GPG keys, use signed-by keyrings, pin packages, and remove repos safely.
How-To
Docker Multi-Stage Builds for Network Tools on Windows & macOS
Set up Docker multi-stage builds for network tools, create lean production and debug targets, and diagnose shell-free containers safely with...
How-To
Install PowerShell 7 and Automate Windows Server Tasks
Set up Windows Server automation with PowerShell for users, services, disk reports, event logs, Scheduled Tasks, error handling, and logging.
How-To
How to Set Up Immich Backup and Recovery with Docker Compose
Build a reliable Immich backup and recovery plan for PostgreSQL and photo storage, then prove it with a safe restore...
How-To
How to Set Up DNS-over-HTTPS with Pi-hole and Unbound (2026 Guide)
Set up DNS-over-HTTPS with Pi-hole and Unbound correctly: real architecture, current DoH-forwarding method, and packet-capture proof your DNS is encrypted.
How-To
How to Integrate Ollama with VS Code on Windows and macOS in 2026
Learn how to integrate Ollama with VS Code on Windows and macOS, verify local AI inference, choose a model, and...
How-To
PostgreSQL Kubernetes Backup with Velero: Scheduled Backups and Tested Restores (2026 Guide)
Learn how to protect PostgreSQL on Kubernetes with Velero: scheduled backups, volume snapshots, a tested cross-namespace restore, and backup health...
How-To
How to Configure NTP on CentOS Stream and RHEL with Chrony
Complete guide to configuring NTP time sync on CentOS Stream and RHEL using chrony — install, configure /etc/chrony.conf, verify with...
How-To
How to Debug Kubernetes Networking Issues: A Layer-by-Layer Troubleshooting Guide (2026)
A step-by-step guide to debug Kubernetes networking issues: check CNI health (Calico/Cilium), test pod connectivity, and diagnose DNS, NetworkPolicy, and...
How-To
PowerShell Remoting on Windows Server: WinRM & SSH Setup Guide (2026)
A security-first guide to Windows Server remote management with PowerShell: set up and harden WinRM and OpenSSH, then choose the...
How-To
How to Deploy PostgreSQL on Kubernetes with a StatefulSet in 2026
Deploy PostgreSQL on Kubernetes StatefulSet with headless DNS, Secrets, persistent storage, backup steps, testing, and a CloudNativePG upgrade path.