DevOps – Page 20 – ITFROMZERO

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.

Development

Building CLIs with Rust and Clap: Goodbye to Your Tangled Bash Scripts

By admin July 8, 2026

Replace Bash scripts with Rust and Clap to build safe, high-performance CLI tools. A detailed guide on configuring subcommands and optimizing binaries for production environments.

Monitoring

Mastering MinIO Performance: How to Set Up Prometheus & Grafana to Monitor IOPS, Throughput, and Capacity

By admin July 8, 2026

Is your MinIO system slow for no apparent reason? This guide will help you set up Prometheus and Grafana to monitor IOPS, throughput, and forecast disk capacity like a pro.

Linux

Expert Tricks for Using sysstat to Diagnose a Slow Linux Server

By admin July 7, 2026

Don't let your Linux server run slow without knowing why. Learn how to use iostat, vmstat, sar, and mpstat to track down performance bottlenecks and troubleshoot incidents like a pro.

MySQL

Solving MySQL Replication Lag: Speed Up Syncing with Parallel Replication

By admin July 5, 2026

Eliminate MySQL Replication Lag using Parallel Replication (MTS) and real-world I/O optimization techniques to keep your systems perfectly in sync.

Network

Mastering Mosquitto MQTT Broker on Linux: From Installation to Real-World Operation

By admin July 5, 2026

A comprehensive guide to installing Mosquitto MQTT Broker on Linux. Practical tips for security configuration, performance optimization, and troubleshooting IoT connection issues.

Docker

Docker Checkpoint and Restore with CRIU: Live Container Migration Without Service Downtime

By admin July 3, 2026

CRIU (Checkpoint/Restore In Userspace) lets you freeze the complete state of a running Docker container and restore it on another server without losing any in-memory state. This guide walks through setting up and using Docker Checkpoint with CRIU for zero-downtime container migration, with practical tips from real-world experience.

VMware

Using VMware vSphere REST API with Python: Automate VM Management and Inventory Without Installing PowerCLI

By admin July 3, 2026

Use Python and the vSphere REST API to automate VM management, export inventory to CSV, create snapshots, and run bulk power operations — no PowerCLI installation required, works on any operating system. Includes real-world scripts and tips from hands-on experience running VMware production environments.

Git

Configuring Branch Protection Rules on GitHub and GitLab: Protecting the Main Branch from Bypassed Code Reviews

By admin July 3, 2026

How to configure Branch Protection Rules on GitHub and GitLab: require code reviews before merging, block force pushes, and protect the main branch from unreviewed changes in team projects.

Ubuntu

Using cloud-init on Ubuntu Server: Automate System Configuration on First Boot

By admin July 1, 2026

cloud-init lets Ubuntu Server configure itself automatically on first boot via user-data YAML — no manual SSH required, no steps missed. This post compares cloud-init with bash scripts, breaks down the pros and cons, and walks through a practical deployment with a complete web server user-data example.