Trianz Devops Engineer Interview Questions and Answers

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

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

Container creation in terraform involves defining a container resource in a terraform configuration file.

• Define a container resource in the terraform configuration file using the 'docker_container' or 'container' provider.

• Specify the image, name, ports, and other necessary configurations for the container.

• Run 'terraform init' and 'terraform apply' to create the container based on the defined configuration.

GCP stands for Google Cloud Platform, a suite of cloud computing services provided by Google.

• GCP offers services such as computing, storage, databases, machine learning, and more.

• It allows users to build, deploy, and scale applications on Google's infrastructure.

• GCP provides tools for monitoring, logging, and managing resources efficiently.

• Examples of GCP services include Compute Engine, Cloud Storage, BigQuery, and Ku

Cloud Run is a managed compute platform that enables you to run stateless containers that are invocable via HTTP requests.

• Allows you to run stateless containers without worrying about infrastructure

• Automatically scales based on incoming requests

• Supports both HTTP and gRPC requests

• Can be deployed from various sources like Docker images or source code

CI is Continuous Integration, where code changes are integrated into a shared repository frequently. CD is Continuous Delivery/Deployment, where code changes are automatically deployed to production.

• CI focuses on automating the integration of code changes from multiple developers in a shared repository.

• CD focuses on automating the deployment of code changes to production environments.

• CI ensures that code changes are te...read more

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

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

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

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