admin – Page 61 – ITFROMZERO

Python & Netmiko: Rescuing Network Engineers from 3 Hours of Manual Switch Configuration

By admin April 19, 2026

Manual network administration becomes a burden as systems scale. Learn how to use Python and Netmiko to automate bulk Cisco and Juniper device configuration safely.

Development

LocalStack: Simulate AWS S3, Lambda, DynamoDB Locally — Completely Free

By admin April 18, 2026

LocalStack lets you emulate AWS S3, Lambda, and DynamoDB locally using Docker, no real AWS account needed. This guide covers setup, a comparison with alternative approaches, and pytest integration for running integration tests completely offline.

Git

Git Filter-Repo: Permanently Remove Sensitive Data and Large Files from Repository History

By admin April 18, 2026

git-filter-repo is the officially recommended Git tool for permanently removing sensitive files, API keys, passwords, and large files from your entire repository history. This guide covers everything from installation and file removal to secret replacement, force pushing, and preventing future incidents.

Network

Mastering the socat Command on Linux: Port Forwarding, Relays, and SSL Tunnels in Practice

By admin April 18, 2026

socat is a powerful Linux command-line tool for port forwarding, TCP/UDP relays, and SSL tunnels — all with a single command. This guide walks through real-world scenarios from basic port forwarding and multi-hop relays to wrapping plain TCP services with SSL.

Database

TimescaleDB: A Lifesaver for PostgreSQL When IoT Data Explodes

By admin April 18, 2026

Don't let PostgreSQL get bogged down by billions of IoT records. Discover how TimescaleDB optimizes performance with hypertables, 90% data compression, and 40x faster dashboards.

Network

Port Knocking: How to Hide SSH Ports and Make Your Linux Server Invisible to Botnets

By admin April 18, 2026

Port Knocking is a security technique that completely hides SSH ports from port scanners. Learn how to install knockd on Linux to protect your server from brute-force attacks.

MySQL

MySQL Deadlock: From a 2 AM Nightmare to a Definitive Resolution Guide

By admin April 18, 2026

MySQL deadlocks aren't scary if you know how to read InnoDB Status logs. Discover 5 practical techniques to reduce transaction conflicts by 80% and optimize high-load systems.

Fedora

Fedora + TPM 2.0: Unlock LUKS Automatically for Lightning-Fast Booting Without Sacrificing Security

By admin April 18, 2026

Stop typing long LUKS passwords every time you boot. Here's a detailed guide on using TPM 2.0 to unlock Fedora automatically, safely, and professionally.

Artificial Intelligence tutorial - IT technology blog

Automating ‘Log Peeking’: Lightning-Fast Error Analysis and Summarization with DeepSeek and Python

By admin April 18, 2026

Learn how to build a Python script to automatically analyze error logs using the DeepSeek API. A practical solution to help DevOps summarize incidents and find root causes in seconds.

Docker

Cleaning Up Your Dockerfile with Hadolint: Stop Bloated and Insecure Images

By admin April 18, 2026

Are your Dockerfiles heavy and insecure? Use Hadolint to automate Best Practice checks. This guide covers image optimization, security patching, and CI/CD integration.