EPAM Systems Senior Systems Engineer Interview Questions, Process, and Tips

Kubernetes runs applications in containers and exposes them through services and ingress controllers.

• Kubernetes uses containers to package and run applications.

• Services provide a stable IP address and DNS name for accessing the application.

• Ingress controllers route traffic from outside the cluster to the appropriate service.

• Kubernetes also supports load balancing, scaling, and rolling updates for applications.

• Examples ...read more

Monolithic applications can be broken down to microservices by identifying cohesive and loosely coupled components and separating them into independent services.

• Identify the business capabilities of the application

• Identify the cohesive and loosely coupled components

• Separate the components into independent services

• Define the interfaces between the services

• Implement the services using appropriate technology stack

• Deploy t...read more

Terraform state files store the current state of infrastructure managed by Terraform.

• State files are JSON files that contain information about the resources being managed by Terraform.

• They are stored locally by default, but can also be stored remotely in a backend like S3 or Consul.

• State files should be treated as sensitive information and stored securely.

• Terraform uses state files to plan and apply changes to infrastr...read more

To build different environments in AWS using Terraform, follow these steps:

• Create a Terraform configuration file for each environment

• Define the resources needed for each environment in the configuration file

• Use Terraform commands to initialize, plan, and apply the configuration for each environment

• Use variables to customize each environment

• Use modules to reuse code across environments