Guru Nanak Dev Super Specialty Hospital Interview Questions and Answers

Steps to deploy an application to Kubernetes

• Create a Kubernetes deployment file with specifications for the application

• Apply the deployment file using kubectl apply command

• Monitor the deployment using kubectl get pods command

• Expose the application using a Kubernetes service

• Scale the application by adjusting the replica count in the deployment file

NullResource in Terraform is a resource that performs no actions when applied, but can be used to trigger provisioners or other side effects.

• NullResource is a resource type in Terraform that allows you to run provisioners without creating any infrastructure.

• It can be used to trigger actions like running scripts or commands on the local machine or remote servers.

• NullResource is often used for tasks like running initialization scripts, setting up configurations, or executing cu...read more

Modules in Terraform are reusable configurations that can be used to create multiple instances of resources.

• Modules help in organizing and reusing Terraform configurations.

• They allow for creating reusable components that can be shared across different projects.

• Modules can be used to encapsulate related resources and configurations.

• They promote code reusability and maintainability in Terraform scripts.

CrashLoopBackOff is an error state in Kubernetes when a container repeatedly crashes and fails to start.

• CrashLoopBackOff occurs when a container in a Kubernetes pod crashes and Kubernetes tries to restart it, but it keeps failing.

• This error is often caused by misconfigurations, resource constraints, or application bugs.

• To troubleshoot CrashLoopBackOff, check the container logs, resource limits, and pod configuration.

• Examples: Insufficient memory allocation, incorrect image pa...read more

A stage in Docker is a logical division in a Dockerfile where a specific set of instructions are executed and the resulting image is saved.

• Stages help in breaking down complex build processes into smaller, manageable parts.

• Each stage can have its own base image and set of instructions.

• Stages can be used to optimize the build process by reusing intermediate images.

• Stages are defined using the 'FROM' keyword in a Dockerfile.