⚙️ Day 8 of #150DaysOfDevOps – Service Management with systemd (SYSTEMCTL & JOURNALCTL)Welcome to Day 8 of the #150DaysOfDevOps challenge. Today, we dive deep into systemd—the powerful init system and service manager used in almost all modern Linux distributions like Ubuntu, CentOS, RHEL, Fedora, and Debian. 🧠 Why Learn systemd? In a...Jul 24, 2025 · 4 min readdevops150.hashnode.dev
🔐 Day 7 of #150DaysOfDevOps – SSH, SCP & IPTables Explained with Real ScenariosWelcome to Day 7 of the #150DaysOfDevOps challenge. Today we’re going beyond the commands to understand the why behind secure connections and traffic filtering using SSH, SCP, and IPTables. 🔐 What is SSH and Why Should You Use It? SSH (Secure Shell...Jul 23, 2025 · 5 min readdevops150.hashnode.dev
🔐 Day 6 of #150DaysOfDevOps – Linux Security & File Permissions DemystifiedWelcome to Day 6 of the #150DaysOfDevOps challenge! Today, we’ll dive into a core security concept every DevOps and Linux engineer must master — User Management and File Permissions in Linux. 🔐💻 🔐 Linux Accounts User information is stored in /et...Jul 22, 2025 · 2 min readdevops150.hashnode.dev
🌐 Day 5 of #150DaysOfDevOps – Networking Story: From DNS to Troubleshooting“Imagine you're Alice, building a web app. You’ve set up multiple servers — a web frontend, a database, and an NFS file server — all on different networks. Now what?” 🖥️ Alice’s Setup Web Server → 192.168.1.10 NFS Server → 192.168.2.20 DB Server ...Jul 14, 2025 · 3 min readdevops150.hashnode.dev
🐚 Day 4 of #150DaysOfDevOps – Working with Shell (Part II)📂 Compression • 🔍 Searching • 🔄 Redirection • ✍️ vi Editor After exploring the basics of the Linux shell in Part I, today we dive deeper into real-world operations that DevOps professionals use every day. 📦 File Compression and Archiving 🔢 View...Jul 13, 2025 · 5 min readdevops150.hashnode.dev