SOA-C02 Exam Dumps : AWS Certified SysOps Administrator - Associate (SOA-C02)

Based on the attached policy, the following actions are allowed for the IAM user:

Allow Amazon RDS DescribeDBInstances Action:

The policy allows rds:Describe* actions on all resources without any condition, so the user can describe RDS instances in any region.

Example action:

rds:DescribeDBInstances

# Enable instance scale-in protection for specific instance.

aws autoscaling set-instance-protection --instance-ids i-5f2e8a0d --auto-scaling-group-name my-asg --protected-from-scale-in

# Disable instance scale-in protection for the specified instance.

aws autoscaling set-instance-protection --instance-ids i-5f2e8a0d --auto-scaling-group-name my-asg --no-protected-from-scale-in

To ensure that EC2 instances in an Auto Scaling group are not interrupted during message processing, the most effective method is to implement scale-in protection for the instances while they are actively processing messages. This can be done programmatically by modifying the Auto Scaling group's settings using the Amazon EC2 Auto Scaling API.

Starting Message Processing: When an instance begins processing a message, your application should make an API call to enable scale-in protection. This is done using the SetInstanceProtection action, setting the ProtectedFromScaleIn parameter to true for that specific instance.

Completing Message Processing: Once the message has been processed, another API call should be made to disable scale-in protection. This is done by calling the SetInstanceProtection action again, but this time setting the ProtectedFromScaleIn parameter to false.

This method ensures that while messages are being processed, the instances are not terminated by the Auto Scaling group regardless of any scale-in activities that might be triggered by other parameters like CPU utilization or a decrease in the number of messages in the queue.

AWS Documentation Reference:

You can refer to the AWS documentation on managing instance scale-in protection in Auto Scaling groups for more details: Instance Scale-In Protection.

To improve the performance of the website with long loading times, leveraging Amazon CloudFront for caching static content and implementing EC2 Auto Scaling are effective strategies.

Add Amazon CloudFront Caching:

Navigate to the CloudFront console and create a new distribution.

For the origin, specify the S3 bucket where the static content is stored.

Configure caching settings to ensure that static content is cached at edge locations for faster delivery to end users.

Update the DNS settings in Amazon Route 53 to point to the CloudFront distribution for static content.

Implement EC2 Auto Scaling:

Go to the EC2 console and create a new launch configuration or launch template for the web servers.

Set up an Auto Scaling group using the launch configuration/template.

Configure the Auto Scaling group to use health checks, and specify the desired, minimum, and maximum number of instances.

Define scaling policies to add or remove instances based on CPU utilization or other metrics.

Distribute instances across multiple Availability Zones for high availability.

Amazon CloudFront Developer Guide

Amazon EC2 Auto Scaling