Incedo AWS Devops Engineer Interview Questions and Answers

Q1. Introduce yourself
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Q2. Write a CI/CD Pipeline code for a 3 tier application
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Q3. Difference between NSG and ASG
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Q1. Architecture of Kubernetes?
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Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications.
• Kubernetes follows a master-slave architecture with a master node that controls multiple worker nodes.

• Master node components include API server, scheduler, controller manager, and etcd.

• Worker node components include kubelet, kube-proxy, and container runtime (e.g. Docker).

• Ku...read more
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Q2. Scenario based Questions
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Q1. How to ensure high available of eks cluster.
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To ensure high availability of EKS cluster, utilize multiple availability zones, implement auto-scaling, use managed node groups, and set up monitoring and alerts.
• Utilize multiple availability zones to distribute workload and ensure redundancy.

• Implement auto-scaling to automatically adjust resources based on demand.

• Use managed node groups to simplify node management and ensure high availability.

• Set up monitoring and al...read more
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Q2. What are liveness and readiness probe
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Liveness and readiness probes are used in Kubernetes to check the health of containers.
• Liveness probe checks if a container is running and healthy. If it fails, Kubernetes restarts the container.

• Readiness probe checks if a container is ready to serve traffic. If it fails, Kubernetes stops sending traffic to the container.

• Probes are configured in the pod's YAML file using the 'livenessProbe' and 'readinessProbe' fields.

• ...read more
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Q1. What is Devops and how do you use
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DevOps is a software development methodology that combines software development (Dev) with IT operations (Ops) to improve collaboration and efficiency.
• DevOps focuses on automating and streamlining the software development process.

• It involves continuous integration, continuous delivery, and continuous deployment.

• DevOps aims to shorten the system development life cycle and provide continuous delivery of high-quality soft...read more
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Q2. Explain k8s in your infratsru
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K8s, short for Kubernetes, is a popular open-source container orchestration platform used for automating deployment, scaling, and management of containerized applications.
• Kubernetes automates the deployment, scaling, and management of containerized applications.

• It provides features like self-healing, load balancing, and rolling updates.

• Kubernetes uses declarative configuration files to define the desired state of the a...read more
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Q1. Basics of Devops and scenerio based questions
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Q2. How you write a CICD using Jenkins for java based application
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Setting up a CICD pipeline using Jenkins for a Java based application involves configuring Jenkins jobs for building, testing, and deploying the application.
• Install Jenkins and necessary plugins for Java projects

• Create a Jenkins job for building the Java application using Maven or Gradle

• Add a post-build step to run unit tests using tools like JUnit

• Configure Jenkins to trigger the job on code commits to the repository

• Se...read more
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Q3. Explain what happen in backend when you try to access any website
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When accessing a website, the backend server receives the request, processes it, retrieves data from databases or other sources, and sends a response back to the client.
• Client sends a request to the website's URL

• DNS resolves the domain name to an IP address

• Backend server receives the request and processes it

• Server retrieves data from databases or other sources

• Server generates a response and sends it back to the client
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Q1. Company fitment and package discussion
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Q1. Explain the pipeline process in Jenkins
Ans. 
Pipeline process in Jenkins automates the software delivery process.
• Pipeline is defined as code in a Jenkinsfile

• It consists of stages, steps, and post actions

• Each stage can have multiple steps like build, test, deploy

• Pipeline can be triggered manually or automatically based on events
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Q2. Which deployment strategy have you used?
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I have used blue-green deployment strategy in previous projects.
• Blue-green deployment involves running two identical production environments, with one active and one inactive.

• Switching between the two environments allows for zero downtime deployments and easy rollback in case of issues.

• I have implemented blue-green deployment using tools like Kubernetes and Jenkins in past projects.
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Q1. Explain migration process of Github to Azure Repos.
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Migration process of Github to Azure Repos involves exporting repositories from Github and importing them into Azure Repos.
• Export repositories from Github using tools like Git or Github API

• Prepare repositories for migration by cleaning up and resolving any dependencies

• Import repositories into Azure Repos using tools like Azure DevOps Services or Git commands

• Update any references or configurations to point to the new Az...read more
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Q2. In docker, how will the containers communicate?
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Containers in Docker can communicate through networking using bridge networks, overlay networks, or user-defined networks.
• Containers can communicate with each other using IP addresses and port numbers.

• Docker provides default bridge networks for communication between containers on the same host.

• Overlay networks allow communication between containers across multiple hosts.

• User-defined networks can be created for custom c...read more
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Q1. What are all the devops tools you have used in your application deployment?
Ans. 
I have experience with a variety of devops tools including Jenkins, Docker, Kubernetes, Ansible, and Terraform.
• Jenkins

• Docker

• Kubernetes

• Ansible

• Terraform
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Q2. What is snapshot in Maven?
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Snapshot in Maven is a version of a project that is still in development and not yet released.
• Snapshots are versions of a project that are still in development and not yet released.

• They are identified by the suffix '-SNAPSHOT' in the version number.

• Snapshots can be deployed to a Maven repository for sharing with other developers for testing purposes.

• They are not intended for production use as they are subject to freque
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Q1. What is the size of you team and what was your role?
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Q1. Why did you leave your previous company?
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Q2. Why do you choose to work in our company?
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Q1. About DevOps & roles and responsibilities
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Q2. Intro about yourself
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I was shared a codebase 2-3 days earlier and I had to find infrastructure issues in the code. Had to fix those issues using terraform