IATOCS Interview Questions and Answers

To take a backup of a particular table from AWS RDS instance, you can use the AWS Database Migration Service (DMS) or AWS Data Pipeline.

• Use AWS Database Migration Service (DMS) to create a task that includes the specific table you want to backup.

• Alternatively, you can use AWS Data Pipeline to schedule regular backups of the table to Amazon S3.

• Ensure that you have the necessary IAM permissions to perform backup operations on the RDS instance.

Pushing a local repo to GitHub

• Navigate to the local repository in the command line

• Add the files to the staging area using 'git add .'

• Commit the changes using 'git commit -m 'Your commit message''

• Link the local repository to the GitHub repository using 'git remote add origin '

• Push the changes to GitHub using 'git push origin master'

Use AWS Lambda functions with CloudWatch Events to automatically start/stop instances at specific times.

• Create a Lambda function to start/stop instances

• Set up CloudWatch Events to trigger the Lambda function at specific times

• Use IAM roles to grant necessary permissions to the Lambda function

• Test the setup by scheduling a start/stop event for an instance

I connected the pipeline with git & k8s using webhooks and Kubernetes deployment configurations.

• Set up webhooks in Git repository to trigger pipeline on code changes

• Configured Kubernetes deployment configurations to deploy changes from pipeline

• Used Kubernetes API to interact with the cluster for deployments

Trust policy in IAM defines which entities are trusted to assume roles in AWS

• Trust policy is a JSON policy document that defines which entities (accounts, users, roles) are trusted to assume roles in AWS

• It is attached to the IAM role and specifies the trusted entities by their AWS account ID or by using the 'aws' principal

• Trust policies are used to establish trust relationships between different AWS accounts or services

• Example: {"Effect": "Allow", "Principal": {"AWS": "arn:aw...read more