Happiest Minds Technologies Devops Engineer Interview Questions and Answers

CICD pipeline is a set of automated processes that allow for continuous integration, continuous delivery, and continuous deployment of software.

• Automates the building, testing, and deployment of code changes

• Helps in detecting and fixing integration errors early in the development process

• Enables faster and more frequent delivery of software updates

• Common tools used in CICD pipelines include Jenkins, GitLab CI, and Circl

Git is a version control system, Ansible is a configuration management tool, Terraform is an infrastructure as code tool, and Kubernetes is a container orchestration platform.

• Git is used for tracking changes in code, collaborating with team members, and managing different versions of code.

• Ansible automates software provisioning, configuration management, and application deployment.

• Terraform allows infrastructure to be ...read more

Docker build context is the set of files and directories that are sent to the Docker daemon when building an image.

• The build context is specified using the -f flag in the docker build command.

• It is recommended to keep the build context small to improve build performance.

• Common files included in the build context are Dockerfile, source code, and any necessary dependencies.

• Excluding unnecessary files and directories from

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

Container creation in terraform involves defining a container resource in a terraform configuration file.

• Define a container resource in the terraform configuration file using the 'docker_container' or 'container' provider.

• Specify the image, name, ports, and other necessary configurations for the container.

• Run 'terraform init' and 'terraform apply' to create the container based on the defined configuration.

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