Hitachi Digital Services Devops Engineer Interview Questions and Answers

To ensure high availability of EKS cluster, utilize multiple availability zones, implement auto-scaling, use managed node groups, and set up monitoring and alerts.

• Utilize multiple availability zones to distribute workload and ensure redundancy.

• Implement auto-scaling to automatically adjust resources based on demand.

• Use managed node groups to simplify node management and ensure high availability.

• Set up monitoring and al...read more

Liveness and readiness probes are used in Kubernetes to check the health of containers.

• Liveness probe checks if a container is running and healthy. If it fails, Kubernetes restarts the container.

• Readiness probe checks if a container is ready to serve traffic. If it fails, Kubernetes stops sending traffic to the container.

• Probes are configured in the pod's YAML file using the 'livenessProbe' and 'readinessProbe' fields.

• ...read more

DevOps is a software development methodology that combines software development (Dev) with IT operations (Ops) to improve collaboration and efficiency.

• DevOps focuses on automating and streamlining the software development process.

• It involves continuous integration, continuous delivery, and continuous deployment.

• DevOps aims to shorten the system development life cycle and provide continuous delivery of high-quality soft...read more

K8s, short for Kubernetes, is a popular open-source container orchestration platform used for automating deployment, scaling, and management of containerized applications.

• Kubernetes automates the deployment, scaling, and management of containerized applications.

• It provides features like self-healing, load balancing, and rolling updates.

• Kubernetes uses declarative configuration files to define the desired state of the a...read more

Review and explain/correct provided code

• Understand the purpose of the code

• Check for any syntax errors or logical mistakes

• Explain the code step by step

• Suggest improvements if necessary

Setting up a CICD pipeline using Jenkins for a Java based application involves configuring Jenkins jobs for building, testing, and deploying the application.

• Install Jenkins and necessary plugins for Java projects

• Create a Jenkins job for building the Java application using Maven or Gradle

• Add a post-build step to run unit tests using tools like JUnit

• Configure Jenkins to trigger the job on code commits to the repository

• Se...read more

When accessing a website, the backend server receives the request, processes it, retrieves data from databases or other sources, and sends a response back to the client.

• Client sends a request to the website's URL

• DNS resolves the domain name to an IP address

• Backend server receives the request and processes it

• Server retrieves data from databases or other sources

• Server generates a response and sends it back to the client

Devops is a software development methodology that combines software development (Dev) with IT operations (Ops) to improve collaboration and productivity.

• Devops focuses on automating and streamlining the software development and deployment process.

• It emphasizes communication and collaboration between development and operations teams.

• Devops aims to shorten the development lifecycle and provide continuous delivery of high...read more

CI/CD pipeline stands for Continuous Integration/Continuous Deployment pipeline, which automates the process of testing and deploying code changes.

• CI/CD pipeline automates the process of integrating code changes from multiple developers into a shared repository (Continuous Integration).

• It also automates the process of testing the integrated code and deploying it to production (Continuous Deployment).

• CI/CD pipelines hel...read more

Devops tools are software products that help automate the processes involved in software development, testing, and deployment.

• Popular Devops tools include Jenkins, Docker, Ansible, Kubernetes, and Git.

• These tools help in automating tasks like building, testing, and deploying software applications.

• They also facilitate collaboration between development and operations teams, leading to faster and more reliable software de...read more

Devops tools are essential for automation, collaboration, and monitoring in the software development lifecycle.

• Devops tools help automate tasks like code deployment, infrastructure provisioning, and testing.

• Popular Devops tools include Jenkins, Docker, Ansible, Kubernetes, and Git.

• These tools facilitate collaboration between development and operations teams, enabling faster delivery of software.

• Monitoring tools like Na...read more