DevOps – Page 19 – ITFROMZERO

Direnv: The ‘Lifesaver’ for Automating Per-Project Environment Variables on Linux

By admin April 13, 2026

Manually managing environment variables on Linux often leads to data mix-ups between projects. Learn how to use direnv to automatically load and unload configurations as you switch directories.

Monitoring

Professional Grafana Dashboard Design: Mastering Panels, Variables, and Annotations

By admin April 13, 2026

Learn practical Grafana Dashboard design from real-world operations. A detailed guide on using dynamic variables, visual panels, and annotations for fast troubleshooting.

Docker

NVIDIA Container Toolkit: How to Run GPUs in Docker (Hands-on from Local to Production)

By admin April 13, 2026

Hands-on guide to installing NVIDIA Container Toolkit. Sharing tips for fixing CUDA errors, optimizing Docker Compose, and techniques to reduce GPU image size from 4GB to 150MB.

Monitoring

Mastering MySQL & PostgreSQL with Prometheus Exporter: Ending the ‘Guessing Game’ of Slow Queries

By admin April 12, 2026

Don't let your database become a 'black box'. A detailed guide on using Prometheus Exporter to identify slow queries, handle replication lag, and optimize DB performance based on real-world experience.

Linux

Hunting Down and Eliminating Zombie Processes: When Linux Servers Are Besieged by the Undead

By admin April 12, 2026

Zombie processes don't consume RAM but can exhaust PIDs, paralyzing your Linux server. Discover how to track down PPIDs and eliminate these 'undead' processes based on real-world experience.

Docker

Dockerize Your Project in a Heartbeat with `docker init`: Fast, Standard, and Effortless

By admin April 12, 2026

Forget writing Dockerfiles from scratch! The docker init command helps you generate best-practice Docker and Compose configs in just 30 seconds, optimizing for size and security.

Security

Building an Internal Certificate Authority with step-ca: Say Goodbye to LAN Security Warnings

By admin April 11, 2026

Say goodbye to red security warnings in your LAN. A detailed guide on building an internal Certificate Authority (CA) with step-ca and automating SSL via ACME.

Docker

Running GitHub Actions Locally with act: ‘Lightning Fast’ Pipeline Debugging Without Pushing Code

By admin April 11, 2026

Tired of constant 'fix ci' commits? Learn how to use act and Docker to debug GitHub Actions locally, saving time and keeping your Git history clean.

Docker

Docker Resource Limits: Don’t Let One Container Crash Your Entire Server

By admin April 11, 2026

Configuring Docker Resource Limits is a must for professional DevOps. Learn how to limit CPU, RAM, and Disk I/O to prevent server hangs and optimize infrastructure costs.