HCL Interview Questions

Q1: Introduce yourself.

Q2: Where do you store credentials of CI/CD pipelines and Kubernetes?

Q3: Suppose an ECS deployment is stuck and pods are still running on the older version, how will you debug?

Q4: Suppose you deployed in non-prod successfully but in production it failed. How will you handle this scenario?

Q5: If CPU utilization is at 30%-40% but users face delayed response, how will you debug?

Q6: If users are getting 502 or 5xx errors, what will you check first?

Q7: What type of automations have you done in your current projects using Python?

Q8: Explain what happens and how your build starts once a developer commits code into 'develop'.

Q9: How do you manage Helm values files for different environments?

Q10: How will you optimize Docker image size?

Q1: What is DevOps and SRE, and what do you think about both?

Q2: When does the state file get created in Terraform?

Q3: What is a remote backend in Terraform?

Q4: What are provisioners in Terraform?

Q5: Explain Kubernetes architecture.

Q6: Suppose there are three types of pods and each is managed by a single service. How does load balancing happen?

Q7: What are labels and selectors in Kubernetes?

Q8: What is PV and PVC in Kubernetes?

Q9: How does a request travel from the internet to your application?

Q10: Can a service load balance multiple types of pods?

Q11: What are autoscaling groups? Based on what metrics does autoscaling happen?

Q12: What happens when node count increases in an autoscaling group?

Q13: Is there a way to prevent specific nodes from scaling down in autoscaling groups?

Q14: Suppose in an ASG load increases and two new nodes are added, and now load has decreased. Which two nodes will get removed from the ASG?

Q15: What happens behind the scenes in this autoscaling mechanism?

Q16: What is a Dockerfile and a Docker image?

Q17: How can we secure Docker containers?