DevOps Engineer Interview Questions

 DevOps Engineer Interview Questions You Must Crack to Land That 20+ LPA Package

𝐋𝐢𝐧𝐮𝐱 & 𝐒𝐜𝐫𝐢𝐩𝐭𝐢𝐧𝐠

1. What are some common Linux commands you use daily as a DevOps engineer, and in what scenarios?

2. How would you troubleshoot a Linux server with high CPU or memory usage?

𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 (𝐆𝐢𝐭 & 𝐆𝐢𝐭𝐇𝐮𝐛/𝐆𝐢𝐭𝐋𝐚𝐛)

3. Explain Git branching strategies (Git Flow, Trunk Based). Which one do you prefer and why?

4. How do you resolve a Git merge conflict in a CI/CD pipeline?

𝐂𝐈/𝐂𝐃 (𝐉𝐞𝐧𝐤𝐢𝐧𝐬 / 𝐆𝐢𝐭𝐋𝐚𝐛 𝐂𝐈 / 𝐆𝐢𝐭𝐇𝐮𝐛 𝐀𝐜𝐭𝐢𝐨𝐧𝐬)

5. Walk me through how you would design a CI/CD pipeline for a microservices-based application.

6. How do you secure credentials and secrets in a Jenkins or GitLab pipeline?

𝐂𝐨𝐧𝐭𝐚𝐢𝐧𝐞𝐫𝐬 (𝐃𝐨𝐜𝐤𝐞𝐫)

7. What is the difference between Docker image and container?

8. How do you reduce the size of a Docker image in production?

𝐊𝐮𝐛𝐞𝐫𝐧𝐞𝐭𝐞𝐬

9. What are the different types of Kubernetes services (ClusterIP, NodePort, LoadBalancer)?

10. How do you handle pod failures and application auto-scaling in Kubernetes?

𝐈𝐧𝐟𝐫𝐚𝐬𝐭𝐫𝐮𝐜𝐭𝐮𝐫𝐞 𝐚𝐬 𝐂𝐨𝐝𝐞 (𝐓𝐞𝐫𝐫𝐚𝐟𝐨𝐫𝐦)

11. What is the difference between terraform import and terraform taint?

12. How do you manage Terraform state in a team environment?

𝐂𝐥𝐨𝐮𝐝 (𝐀𝐖𝐒)

13. What are the differences between Auto Scaling Groups and Kubernetes HPA in AWS?

14. How would you design a highly available system on AWS using Load Balancer + ASG?

𝐌𝐨𝐧𝐢𝐭𝐨𝐫𝐢𝐧𝐠 & 𝐋𝐨𝐠𝐠𝐢𝐧𝐠

15. What is the difference between monitoring and observability?

16. How do you set up centralized logging for a microservices application?

𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 & 𝐃𝐞𝐯𝐒𝐞𝐜𝐎𝐩𝐬

17. How do you scan Docker images for vulnerabilities?

18. What are some best practices for securing a CI/CD pipeline?

𝐆𝐞𝐧𝐞𝐫𝐚𝐥 𝐃𝐞𝐯𝐎𝐩𝐬 𝐂𝐮𝐥𝐭𝐮𝐫𝐞 & 𝐏𝐫𝐚𝐜𝐭𝐢𝐜𝐞𝐬

19. What does “Shift-Left” mean in DevOps?

20. Can you explain a real incident you resolved in production and what you learned from it?