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Monitoring tutorial - IT technology blog

ELK Stack Installation Guide: Centralized Log Management from A-Z for SysAdmins

By admin March 30, 2026

A comprehensive guide to installing ELK Stack 8.x. Learn tips for JVM Heap optimization, pipeline processing, and effective centralized log management for SysAdmins.

Git

Git Rebase vs Merge: Don’t Let Your Commit History Look Like a Mess of Wires

By admin March 30, 2026

Distinguishing Git Rebase and Merge: When to merge branches and when to rewrite history? A guide to keeping commit history clean and safety tips for teamwork.

Git

Git Reflog: The Ultimate Guide to ‘Resurrecting’ Deleted Commits and Branches

By admin March 29, 2026

Don't panic when you accidentally use git reset --hard. This guide will help you use Git reflog to recover deleted commits and branches in seconds with real-world examples.

Ubuntu

Installing PostgreSQL on Ubuntu 22.04: From Zero to Production Deployment

By admin March 29, 2026

Learn how to professionally install and configure PostgreSQL on Ubuntu 22.04. A guide to creating users, securing remote connections, and managing disk space effectively.

Ubuntu

Mastering Netplan on Ubuntu: From Static IP to Professional Bridge and Bond Configurations

By admin March 29, 2026

Detailed guide on configuring Netplan on Ubuntu for static IP, Bridge, and Bonding. Practical tips to help IT engineers avoid YAML errors and manage server networking efficiently.

Monitoring

Grafana Loki: A Lightweight Log Management Solution to Replace ELK Stack

By admin March 29, 2026

Centralized log management doesn't have to be expensive. A detailed guide on setting up Grafana Loki to replace ELK Stack, saving RAM and optimizing storage costs.

Monitoring

Email Alerts with Grafana: Stop Finding Out About Downtime Too Late

By admin March 29, 2026

Don't let your dashboards be just for show. A detailed guide on configuring SMTP and Grafana Alerting to receive instant incident notifications via email.

Python

Building REST APIs with Python Flask: From a 2 AM ‘Firefighting’ Shift to Real-World Solutions

By admin March 29, 2026

Don't let your Python scripts stay silent when requests come in. Learn to build REST APIs with Flask from real scenarios for smoother, professional data communication.

Git

Git Worktree: Work on Multiple Branches Simultaneously Without Stashing or Cloning

By admin March 29, 2026

Git Worktree lets you work on multiple branches simultaneously in separate directories, without needing to stash or clone the repo again. This guide covers the most practical real-world scenarios for using Git Worktree effectively in your daily workflow.

Database

Migrating Data from MySQL to PostgreSQL: Comparing Methods and Practical Guide

By admin March 29, 2026

A guide comparing 3 methods for migrating data from MySQL to PostgreSQL: pgloader, manual mysqldump conversion, and Python ETL. Analyzes the pros and cons of each approach with practical command examples and a post-migration verification checklist.

Monitor MySQL Performance with Performance Schema and sys Schema: Find Bottlenecks Fast

Building a News Website with Django: A Step-by-Step Guide for Beginners

Structuring the .claude/ Directory for Claude Code Projects: From Small to Large

OOM Killer: Why Linux Kills Your MySQL and How to Protect It

VMware Aria Operations Deployment Guide: A Lifesaver for vSphere Administrators

MySQL: Don’t Let utf8 Deceive You – The Ultimate Guide to Fixing Emojis and Font Issues with utf8mb4

Incus on Ubuntu: Installation Guide and Upgrading from LXD

Linux ACL: How to Set ‘Ultra-Detailed’ Permissions for Each User (Replacing chmod 777)

Mastering HashiCorp Packer: Automating Proxmox and VMware VM Template Creation

Stop Installing Terraform and Ansible Directly: Use Docker CLI to Keep Your Host Clean

ELK Stack Installation Guide: Centralized Log Management from A-Z for SysAdmins

Git Rebase vs Merge: Don’t Let Your Commit History Look Like a Mess of Wires

Git Reflog: The Ultimate Guide to ‘Resurrecting’ Deleted Commits and Branches

Installing PostgreSQL on Ubuntu 22.04: From Zero to Production Deployment

Mastering Netplan on Ubuntu: From Static IP to Professional Bridge and Bond Configurations

Grafana Loki: A Lightweight Log Management Solution to Replace ELK Stack

Email Alerts with Grafana: Stop Finding Out About Downtime Too Late

Building REST APIs with Python Flask: From a 2 AM ‘Firefighting’ Shift to Real-World Solutions

Git Worktree: Work on Multiple Branches Simultaneously Without Stashing or Cloning

Migrating Data from MySQL to PostgreSQL: Comparing Methods and Practical Guide