10+ Einfochips Devops Engineer Interview Questions and Answers

To create an EC2 instance using Terraform, define the necessary resources in a Terraform configuration file and run 'terraform apply'.

• Write a Terraform configuration file with the necessary resources, such as 'aws_instance' for EC2 instance.

• Specify the required parameters like 'ami', 'instance_type', 'subnet_id', etc.

• Run 'terraform init' to initialize the working directory.

• Run 'terraform plan' to see the execution plan.

• Run 'terraform apply' to create the EC2 instance.

• Verify t...read more

To copy a commit from one branch to another, use the git cherry-pick command.

• Checkout the branch where you want to copy the commit

• Find the commit hash of the commit you want to copy

• Run 'git cherry-pick ' to apply the commit to the current branch

git remote is used to manage remote repositories. git fetch is used to download changes from a remote repository.

• git remote is used to manage remote repositories

• git fetch is used to download changes from a remote repository

• git remote add is used to add a new remote repository

• git remote -v shows the list of remote repositories

• git fetch downloads changes from a remote repository

• git pull fetches and merges changes from a remote repository

• git push pushes changes to a remot...read more

Injections and attacks can be handled by implementing security measures and regularly updating software.

• Implement security measures such as firewalls, intrusion detection systems, and access controls

• Regularly update software and apply security patches

• Conduct regular security audits and penetration testing

• Train employees on security best practices and conduct background checks

• Use encryption to protect sensitive data

• Monitor network traffic for suspicious activity

Creating a pipeline through script involves defining stages, tasks, and triggers in a script file.

• Define stages for each step in the pipeline

• Define tasks for each stage, such as building, testing, and deploying

• Define triggers for each stage, such as manual or automatic triggers

• Use a scripting language such as YAML or JSON to define the pipeline

• Examples: Jenkinsfile for Jenkins, azure-pipelines.yml for Azure DevOps

Docker image has 3 layers: Base, Dependencies and Application.

• Base layer contains the OS and other system-level libraries.

• Dependencies layer contains the libraries and packages required by the application.

• Application layer contains the code and files specific to the application.

• Each layer is read-only and builds on top of the previous layer.

• Changes made to one layer do not affect the other layers.

• This layering approach makes Docker images lightweight and easy to share.

A fault domain is a logical group of hardware components that share a common power source and network switch.

• Fault domains are used to ensure high availability and fault tolerance in distributed systems.

• By distributing resources across fault domains, system failures can be isolated and minimized.

• Examples of fault domains include racks in a data center or availability zones in a cloud provider.

• In the event of a power outage or network failure in one fault domain, the system ca...read more

Webhooks in Jenkins are a way to trigger a build or perform an action in response to an external event.

• Webhooks allow Jenkins to receive notifications from external systems.

• They are typically used to trigger a build when a code repository is updated.

• Webhooks can be configured to send JSON or XML payloads to Jenkins.

• Jenkins can parse the payload and take actions based on the received data.

• Webhooks can be set up for various events like code commits, pull requests, etc.

To login docker registry, use the docker login command with the registry URL, username, and password.

• Use the docker login command followed by the registry URL

• Enter the username and password when prompted

• Example: docker login myregistry.com -u username -p password

Git Gradle is not a specific tool or concept. Git is a version control system and Gradle is a build automation tool.

• Git is a distributed version control system used for tracking changes in source code during software development.

• Gradle is a build automation tool that is used to automate the building, testing, and deployment of software projects.

• Git and Gradle are often used together in software development workflows to manage source code and build processes.