EPAM Systems Senior Devops Engineer Interview Questions and Answers

Terraform code for creating an AWS EC2 instance

• Define provider and resource block in main.tf file

• Specify the AMI, instance type, key pair, and security group in the resource block

• Run 'terraform init', 'terraform plan', and 'terraform apply' commands to create the EC2 instance

Ansible playbook to install and start Datadog

• Use Ansible's package module to install Datadog agent package

• Use Ansible's service module to start the Datadog service

• Ensure proper configuration settings are applied in the playbook

Shell script to check for a file and create it if it does not exist

• Use the 'test' command to check if the file exists

• If the file does not exist, use 'touch' command to create it

A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image.

• Start with a base image using the FROM keyword

• Use the RUN keyword to execute commands in the image

• Use the COPY or ADD keyword to add files from the host machine to the image

• Use the CMD keyword to specify the command to run when the container starts

EPAM is a global provider of software engineering and IT consulting services.

• EPAM was founded in 1993 in Princeton, New Jersey.

• It has offices in over 30 countries worldwide.

• EPAM offers services in areas such as software development, testing, and consulting.

• The company works with clients in various industries, including finance, healthcare, and retail.

A Dockerfile is a script that contains instructions to build a Docker image.

• Start with a base image

• Add necessary dependencies and packages

• Copy application code into the image

• Set environment variables

• Expose necessary ports

• Define the command to run the application

• Build the image using 'docker build' command

To add VPC and subnet, go to the VPC dashboard and click on 'Create VPC' button. Then create a subnet within the VPC.

• Go to the VPC dashboard in the AWS console

• Click on the 'Create VPC' button

• Enter the details for the VPC such as name, CIDR block, etc.

• Create a subnet within the VPC by clicking on 'Create Subnet' button

• Enter the details for the subnet such as name, CIDR block, availability zone, etc.