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100 Real DevOps Linux Troubleshooting Scenarios

Mar 18 · 7 min read · 1️⃣ System Access & Login Issues (10) 1. Cannot SSH into server Check ping server-ip ssh user@server-ip systemctl status ssh Possible issues • SSH service down • Security group blocking port 22 • Fir

50 Basics Linux questions

Mar 17 · 4 min read · 50 DevOps Linux Interview Questions (With Answers) 1 What is Linux? Answer:Linux is an open-source Unix-like operating system used in servers, cloud systems, and DevOps environments. 2 What is root d

File search, Text Processing command

Mar 17 · 5 min read · 1️⃣1️⃣ File Searching Commands Linux systems can contain millions of files, so efficient search tools are essential. find — Search Files in the Filesystem What find does find searches for files and d

Service management, disk management, user and group management, ssh and remote server acess

Mar 17 · 6 min read · 7️⃣ Service Management (systemd) Most modern Linux systems use systemd to manage background services. Services run continuously in the background such as: nginx docker mysql redis kubernetes services

Networking troubleshooting

Mar 16 · 9 min read · Networking troubleshooting is a core skill for DevOps engineers, because most production issues involve connectivity problems between services — such as: Application cannot reach database API is not