NextComm Corporation AWS Devops Engineer Interview Questions and Answers

Kubernetes networking is the way in which different pods and services communicate with each other within a Kubernetes cluster.

• Kubernetes networking allows pods to communicate with each other across nodes in the cluster.

• It uses a flat network model where each pod gets its own IP address.

• Kubernetes networking can be implemented using various plugins like Calico, Flannel, or Cilium.

• Network policies can be defined to contr...read more

Pods communicate with other pods through network communication within the same Kubernetes cluster.

• Pods can communicate with each other using services, which provide a stable endpoint for communication.

• Pods can use DNS names to communicate with other pods within the same cluster.

• Pods can also communicate directly using IP addresses within the cluster network.

• Communication between pods can be secured using network polici...read more

Ingress controller is a Kubernetes resource that manages external access to services within a cluster.

• Ingress controller acts as a traffic manager, routing incoming traffic to the appropriate services based on rules defined in the Ingress resource.

• It allows for the configuration of HTTP and HTTPS routing, load balancing, SSL termination, and more.

• Popular Ingress controllers include Nginx Ingress Controller, Traefik, an...read more

Ingress controls the external access to services in a cluster, while service defines a set of pods and how they can be accessed.

• Ingress manages external access to services in a cluster

• Service defines a set of pods and how they can be accessed

• Ingress can provide load balancing, SSL termination, and routing based on hostnames or paths

• Service can be of type ClusterIP, NodePort, LoadBalancer, or ExternalName

I faced issues with network connectivity, configuration errors, and dependency mismatches while deploying the application.

• Network connectivity issues causing deployment failures

• Configuration errors leading to incorrect application setup

• Dependency mismatches causing compatibility issues

• Resource constraints impacting deployment performance

S3 life cycle rules automate the management of objects in S3 buckets based on predefined criteria.

• Automate the transition of objects to different storage classes based on age or other criteria

• Automatically delete objects after a certain period of time

• Reduce storage costs by moving less frequently accessed data to cheaper storage options

I have used code reviews, automated testing, static code analysis tools, and continuous integration to check the quality of code.

• Code reviews by peers to catch bugs and ensure best practices

• Automated testing using tools like Selenium for functional testing and JUnit for unit testing

• Static code analysis tools like SonarQube to identify code smells and potential bugs

• Continuous integration with tools like Jenkins to autom

CodePipeline is a continuous integration and continuous delivery service for fast and reliable application and infrastructure updates.

• Automates the build, test, and deploy phases of your release process

• Supports integration with various AWS services like CodeBuild, CodeDeploy, and Lambda

• Allows for custom actions and third-party integrations

• Provides visualization of the entire release process with customizable dashboards

Blue green deployment is a deployment strategy where two identical production environments are used to minimize downtime and risk.

• Blue green deployment involves running two identical production environments, one 'blue' and one 'green'.

• Traffic is routed to the 'blue' environment while the 'green' environment is updated and tested.

• Once the 'green' environment is deemed stable, traffic is switched to it and the 'blue' env...read more