Ncsi Technologies Devops Engineer Interview Questions and Answers

Node affinity is a feature in Kubernetes that allows pods to be scheduled onto nodes based on labels assigned to nodes.

• Node affinity is used to ensure that pods are scheduled onto nodes that meet certain criteria specified in the pod's affinity rules.

• There are two types of node affinity: requiredDuringSchedulingIgnoredDuringExecution and preferredDuringSchedulingIgnoredDuringExecution.

• Node affinity rules can be based o...read more

Security groups are virtual firewalls that control inbound and outbound traffic for instances in a cloud network.

• Security groups are used to control traffic at the instance level.

• They act as virtual firewalls for instances in a cloud network.

• They allow you to specify which traffic is allowed to reach your instances.

• You can define rules for inbound and outbound traffic based on protocols, ports, and IP addresses.

• Securit...read more

To check kubernetes resources, use kubectl command-line tool.

• Use 'kubectl get' command to list resources

• Use 'kubectl describe' command to get detailed information about a resource

• Use 'kubectl logs' command to view logs of a container

• Use 'kubectl exec' command to execute a command in a container

• Use 'kubectl apply' command to apply changes to a resource

• Use 'kubectl delete' command to delete a resource

Optimizing cost in DevOps involves efficient resource utilization and automation.

• Implementing infrastructure as code to automate provisioning and scaling of resources

• Utilizing cloud cost management tools to monitor and optimize spending

• Implementing containerization to improve resource utilization and reduce costs

• Optimizing CI/CD pipelines to reduce build and deployment times, saving on compute costs

I would deploy the app on AWS cloud using services like EC2, S3, and Elastic Beanstalk.

• Create an EC2 instance to host the application

• Store static files in S3 bucket

• Use Elastic Beanstalk for easy deployment and scaling

• Set up security groups and IAM roles for access control