DevOps – Page 14 – ITFROMZERO

Installing Node Exporter on CentOS Stream 9: RHEL-Standard Server Monitoring

By admin July 11, 2026

A detailed guide to installing Node Exporter on CentOS Stream 9. Resolve SELinux and Firewalld issues and integrate Grafana Dashboard 1860 for 24/7 monitoring.

Git

Gource Guide: Turn Git Commit History into Stunning Video Animations

By admin July 11, 2026

Transform dry Git logs into vibrant animations with Gource. A detailed guide covering everything from installation to exporting professional MP4 videos for project reports.

Centos

Deploying Podman Compose on CentOS Stream 9: A Rootless and SELinux Solution to Replace Docker

By admin July 11, 2026

A guide to replacing Docker Compose with Podman Compose on CentOS Stream 9. Optimize security with Rootless containers and resolve SELinux permission errors.

Git

Lightning-Fast Branch Management with Git-town: Say Goodbye to the Manual Command Nightmare

By admin July 11, 2026

A guide to using Git-town to automate branch management workflows. Save time, reduce merge conflicts, and clean up stale branches with a single command.

MySQL

MySQL Error Log and General Query Log: Production Troubleshooting Techniques for Sysadmins

By admin July 11, 2026

Learn how to configure MySQL Error Log and General Query Log for rapid system diagnostics. Practical insights on log management and production debugging.

Git

Advanced git log: Filter Commits by Author, Time, and File — Visualize Branches with –graph –pretty

By admin July 10, 2026

A practical guide to advanced git log: filter commits by author, time, and code content with -S/-G, visualize branches with --graph --pretty, and automate sprint reports for your team. All from real production experience.

Centos

Deploying Ansible on CentOS Stream 9: Automate Linux Server Management Without Installing Agents

By admin July 10, 2026

A guide to deploying Ansible on CentOS Stream 9 to automate configuration and manage multiple Linux servers simultaneously. Ansible works over SSH — no agent installation, no extra ports — suitable for both beginners and operations teams.

Network

Cloudflare WARP on Linux Server: The ‘Lifesaver’ Solution for Network Performance and IP Security

By admin July 9, 2026

Don't let your server get IP-blocked or throttled on international routes. This guide covers installing Cloudflare WARP on Linux with Proxy Mode to secure and optimize your connection — surprisingly simple to set up.

MySQL

gh-ost: Zero-Downtime MySQL Schema Changes — GitHub’s Answer to pt-osc

By admin July 8, 2026

gh-ost is a tool developed by GitHub for making MySQL schema changes on tables with tens of millions of rows without any downtime. Unlike pt-osc which uses triggers, gh-ost reads the binlog directly — safer, with the ability to pause/resume and adjust speed in realtime throughout the migration.

Linux

A Practical Guide to jq on Linux: Filtering and Processing JSON from APIs in the Terminal

By admin July 8, 2026

When you're debugging production at 2 AM staring at an unreadable wall of JSON in your logs, jq saves you more time than any other approach. This guide compares jq against grep and Python for handling JSON in the terminal, covering everything from basic syntax to filtering Docker containers and Kubernetes API responses in practice.