L&T Construction Senior Devops Engineer Interview Questions and Answers

The .NET pipeline build process involves several steps including source code management, building, testing, and deployment.

• Source code is managed using a version control system like Git.

• The build process involves compiling the code and creating an executable or library.

• Unit tests are run to ensure the code is functioning correctly.

• The application is deployed to a testing or staging environment for further testing.

• Once ...read more

NuGet is a package manager for .NET that simplifies the process of finding, installing, and using third-party libraries.

• NuGet can be installed using Visual Studio or the NuGet command-line interface (CLI).

• NuGet restore is used to restore the packages listed in a project's packages.config file.

• NuGet packages can be used to add functionality to a project, such as libraries, tools, and frameworks.

• NuGet also allows for the...read more

Approval request procedure in pipelines involves manual or automated approval process before deployment.

• Approval request is triggered when a pipeline reaches a certain stage or before deployment.

• The request can be manual or automated depending on the pipeline configuration.

• Manual approval requires a designated person to review and approve the request.

• Automated approval can be based on predefined rules or conditions.

• App...read more

I would follow the incident management process to identify the root cause and resolve the issue as quickly as possible.

• Notify the relevant stakeholders and initiate the incident management process

• Identify the root cause of the issue and take corrective actions

• Rollback to the previous stable version if necessary

• Communicate the status and progress of the incident to stakeholders

• Conduct a post-incident review to identify

Yes, I have written Docker files from scratch. The syntax for Docker file includes instructions and arguments.

• Docker file is a script that contains instructions to build a Docker image

• The syntax includes instructions like FROM, RUN, COPY, CMD, etc.

• Arguments are used to specify details like the base image, working directory, etc.

• Example: FROM ubuntu:latest RUN apt-get update && apt-get install -y python3

• Example: COPY .

Docker commands used inside a Dockerfile

• FROM - specifies the base image

• RUN - executes a command in the container

• COPY - copies files from host to container

• WORKDIR - sets the working directory for subsequent commands

• CMD - specifies the command to run when the container starts

To run a Docker file, use the 'docker build' command followed by the path to the Dockerfile.

• Navigate to the directory containing the Dockerfile

• Run the command 'docker build -t .'

• The '.' at the end of the command specifies the build context

• Once the build is complete, run the container using 'docker run '

Azure Keyvaults are used to securely store and manage cryptographic keys, secrets, and certificates.

• Keyvaults provide a centralized location for managing secrets and keys used in applications.

• They allow for secure storage and retrieval of sensitive information such as passwords, API keys, and certificates.

• Keyvaults can be accessed programmatically through APIs or through the Azure portal.

• They can also be integrated wit...read more

To give permission to a secret, grant access to the user or application in the secret management tool.

• Access control can be managed through the secret management tool.

• Users or applications can be granted read or write access to a specific secret.

• Access can be granted based on roles or individual permissions.

• Examples of secret management tools include HashiCorp Vault and AWS Secrets Manager.

My strategy for Kubernetes cluster is to ensure high availability, scalability, and efficient resource utilization.

• Implementing auto-scaling to handle sudden spikes in traffic

• Using Kubernetes' built-in features like horizontal pod autoscaling and cluster autoscaling

• Ensuring proper resource allocation and utilization through resource quotas and limits

• Implementing rolling updates to minimize downtime

• Using Kubernetes' bui...read more

Autoscaling in Kubernetes can be achieved through Horizontal Pod Autoscaler (HPA) and Cluster Autoscaler.

• Horizontal Pod Autoscaler (HPA) scales the number of pods based on CPU utilization or custom metrics.

• Cluster Autoscaler scales the number of nodes in the cluster based on resource utilization.

• HPA can be configured using kubectl autoscale command or through YAML file.

• Cluster Autoscaler can be installed as a Kubernete...read more