UST Devops Engineer Interview Questions and Answers

Challenges faced in Kubernetes include networking issues, resource management, and complexity of configurations.

• Networking issues can arise due to misconfigurations or conflicts between pods

• Resource management challenges include optimizing resource allocation and scaling

• Complexity of configurations can lead to difficulties in troubleshooting and maintaining the cluster

I have troubleshooted a CI/CD pipeline for a microservices architecture using Jenkins and Docker.

• Identified and resolved issues with Jenkins plugins causing build failures

• Optimized Docker images to reduce build times and improve deployment speed

• Debugged pipeline scripts to ensure proper integration and testing of microservices

To check kubernetes resources, use kubectl command-line tool.

• Use 'kubectl get' command to list resources

• Use 'kubectl describe' command to get detailed information about a resource

• Use 'kubectl logs' command to view logs of a container

• Use 'kubectl exec' command to execute a command in a container

• Use 'kubectl apply' command to apply changes to a resource

• Use 'kubectl delete' command to delete a resource

Terraform and CDK are both infrastructure as code tools used for provisioning and managing cloud resources.

• Terraform is a popular open-source tool by HashiCorp that allows you to define and provision infrastructure using declarative configuration files.

• CDK (Cloud Development Kit) is an AWS-specific tool that allows you to define cloud infrastructure using familiar programming languages like TypeScript, Python, and Java.

• Terraform is more widely used and supports multiple cloud...read more

I have worked on automating CI/CD pipelines, infrastructure as code, and monitoring solutions.

• Automated CI/CD pipelines using tools like Jenkins, GitLab CI, or CircleCI

• Implemented infrastructure as code using Terraform or CloudFormation

• Set up monitoring solutions with tools like Prometheus, Grafana, or ELK stack

Docker is a platform for developing, shipping, and running applications in containers. Docker Hub is a cloud-based registry for storing and sharing container images.

• Docker is a tool designed to make it easier to create, deploy, and run applications by using containers.

• Containers allow a developer to package up an application with all parts it needs, such as libraries and other dependencies, and ship it all out as one package.

• Docker Hub is a cloud-based service that allows you...read more