deVops pathshala Blog – Notes for Me & You

🟢 Basic Level  General Concepts What is DevOps and why is it important? What is the difference between DevOps and Agile? Explain the DevOps lifecycle (Plan → Code → Build → Test → Release → Deploy → Operate → Monitor). What is CI/CD? How do they differ? What is the difference between Continuous Delivery and Continuous Deployment? Version Control What is Git? How is it different from SVN? What is the difference between git merge and git rebase ? What is a pull request / merge request? How do you resolve a merge conflict in Git? Linux/OS Basics What are inodes in Linux? How do you check disk usage in Linux? ( df , du ) What is the difference between a process and a thread? What does chmod 755 mean? How do you check running processes? ( ps , top , htop ) 🟡 Intermediate Level CI/CD & Automation What tools have you used for CI/CD? (Jenkins, GitHub Actions, GitLab CI, CircleCI) Explain a Jenkins pipeline. What is a Jenkinsfile ? What is the difference between a declarative...

  Introduction If you are preparing for a Linux Administrator job and the company is asking for 1 year of experience, then you must be prepared not only for basic questions but also for advanced real-time Linux interview questions. In this article, we have listed the most important advanced Linux interview questions that are commonly asked from candidates with 6 months to 1 year of experience. Section 1 – Advanced Linux Troubleshooting Questions How will you troubleshoot if a Linux server is not booting? What will you do if the system enters emergency mode? How will you reset the root password in Linux? How will you troubleshoot a slow Linux server? The system is hanging but memory looks free. What could be the issue? Section 2 – Advanced Process Management Questions How do you identify high CPU usage in a production server? What will you do if a process is not getting killed? What is a zombie process and how do you fix it? What is the real production use of nice and renice...