NTT Data AWS Devops Engineer Interview Questions and Answers

git fetch downloads changes from the remote repository, while git pull downloads changes and merges them into the current branch.

• git fetch only downloads changes from the remote repository, but does not merge them into the current branch

• git pull downloads changes from the remote repository and merges them into the current branch

• git fetch is useful for reviewing changes before merging, while git pull is a shortcut for f

The 'add' command is used to add files from the source directory to the destination directory in a Dockerfile, while the 'copy' command is used to copy files from the source directory to the destination directory in a Dockerfile.

• The 'add' command can also accept URLs as the source, while the 'copy' command cannot.

• The 'add' command can automatically extract compressed files, while the 'copy' command cannot.

• The 'copy' co...read more

ECS is Elastic Container Service and EKS is Elastic Kubernetes Service. Troubleshoot code in paused state by checking logs and restarting tasks. Troubleshoot ingress controller by checking configuration and logs. ALB is Application Load Balancer.

• ECS is a managed container orchestration service by AWS

• EKS is a managed Kubernetes service by AWS

• To troubleshoot code in paused state in ECS, check CloudWatch logs, task defini...read more

Jenkins CI/CD flow automates the software delivery process from code commit to deployment.

• Jenkins pulls code from version control system

• Builds the code and runs automated tests

• If tests pass, deploys the code to a staging environment

• Manual testing is done in staging environment

• If approved, Jenkins deploys the code to production environment

• Logs and reports are generated throughout the process

AWS Lambda is a serverless computing service that runs code in response to events and automatically manages the computing resources required.

• Lambda functions are triggered by events such as changes to data in an S3 bucket, updates to a DynamoDB table, or HTTP requests via API Gateway.

• Lambda functions can be written in languages like Node.js, Python, Java, and more.

• AWS Lambda automatically scales to handle the incoming ...read more

VPC stands for Virtual Private Cloud, a virtual network dedicated to your AWS account.

• VPC allows you to create a logically isolated section of the AWS Cloud where you can launch AWS resources.

• You can define your own IP address range, create subnets, configure route tables, and network gateways within a VPC.

• VPC provides security by allowing you to control inbound and outbound traffic to and from your AWS resources.

• You c...read more

A pod in K8s is the smallest deployable unit in Kubernetes, consisting of one or more containers that share resources.

• Pods are used to group containers that need to work together, such as a web server and a database.

• Pods share the same network namespace and can communicate with each other using localhost.

• Pods can be managed, scaled, and monitored as a single unit in Kubernetes.

• Each pod has a unique IP address within th

Terraform state file is a file that stores the state of your infrastructure managed by Terraform.

• It keeps track of the current state of your resources in the cloud.

• Helps Terraform understand what has been created, modified, or deleted.

• It is used to plan and apply changes to your infrastructure.

• State file can be stored locally or remotely in a backend like AWS S3 or Terraform Cloud.

Error encountered during pod creation can be due to various reasons such as incorrect configuration, resource constraints, network issues, or image availability.

• Check the pod configuration file for any syntax errors or misconfigurations

• Ensure that there are enough resources available on the cluster for pod creation

• Verify network connectivity and DNS resolution within the cluster

• Check if the container image specified in...read more