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

To securely manage and rotate the credentials for an Amazon RDS database created by a CloudFormation template, you should use AWS Secrets Manager. The AWS::SecretsManager::Secret resource can be used to create a secret, and the resolve:secretsmanager dynamic reference can be used to retrieve the secret.

Define Secrets Manager Resource in CloudFormation Template:

Add an AWS::SecretsManager::Secret resource to the CloudFormation template to store the database credentials.

Reference the Secret in RDS Resource:

Use the resolve:secretsmanager dynamic reference to retrieve the secret when creating the AWS::RDS::DBInstance resource.

Example CloudFormation Template:

MyDatabaseSecret:

Type: AWS::SecretsManager::Secret

Properties:

Name: MyDatabaseSecret

GenerateSecretString:

SecretStringTemplate: '{"username": "admin"}'

GenerateStringKey: "password"

PasswordLength: 16

ExcludeCharacters: '"@/\\'

MyRDSInstance:

Type: AWS::RDS::DBInstance

Properties:

DBInstanceIdentifier: MyRDSInstance

Engine: mysql

MasterUsername: !Sub '{{resolve:secretsmanager:MyDatabaseSecret:SecretString:username}}'

MasterUserPassword: !Sub '{{resolve:secretsmanager:MyDatabaseSecret:SecretString:password}}'

DBInstanceClass: db.t2.micro

AllocatedStorage: 20

References:

AWS::SecretsManager::Secret

Dynamic References

To automate the creation and management of IAM roles for multiple AWS accounts in an AWS Organization, using AWS CloudFormation StackSets is the most operationally efficient solution.

AWS CloudFormation StackSets:

AWS CloudFormation StackSets extends the functionality of stacks by enabling you to create, update, or delete stacks across multiple AWS accounts and regions with a single operation.

Using StackSets with AWS Organizations:

Create a CloudFormation template that defines the necessary IAM roles.

Use StackSets to deploy the template across multiple AWS accounts in your organization.

References:

AWS CloudFormation StackSets

Creating IAM Roles with CloudFormation

To ensure that the new web subnet can communicate with the database instance, follow these steps:

Create an Inbound Allow Rule for MySQL/Aurora (3306):

On the network ACL for the database subnets, add an inbound allow rule to permit traffic from the third web subnet on port 3306 (MySQL/Aurora).

Amazon CloudFront is a global content delivery network (CDN) service that delivers your content with low latency and high transfer speeds. By distributing the static content (images and videos) to CloudFront edge locations, users in the United States and Europe can access the content from the nearest edge location, significantly improving the load times.

Create a CloudFront Distribution:

Open the Amazon CloudFront console at Amazon CloudFront Console.

Choose Create Distribution and select Web.

Specify the S3 bucket as the origin where your static content is stored.

Configure Distribution Settings:

Configure the settings, such as cache behaviors and SSL/TLS settings.

Optionally, configure additional features like geo-restriction and logging.

Update DNS Configuration:

Update your DNS records to point to the CloudFront distribution. This can be done via Amazon Route 53 or your DNS provider.

Monitor Performance:

Use CloudFront reports and logs to monitor the performance and adjust configurations if needed.

References:

Amazon CloudFront Overview

Creating a CloudFront Distribution

To rotate an AWS KMS customer master key (CMK) with imported key material every 6 months, follow these steps:

Create a New CMK with New Imported Material:

Generate new key material according to your security policies.

Create a new CMK in AWS KMS and import the new key material into this CMK.

To view the cost details of each project in an AWS account using Cost Explorer, you need to activate cost allocation tags and tag the resources with a project identifier.

Activate Cost Allocation Tags:

Navigate to the AWS Billing and Cost Management console.

In the navigation pane, choose "Cost allocation tags".

Select the tags you want to activate (e.g., "Project") and click "Activate".

Tag Resources with Project Identifier:

Go to the AWS Management Console for each service where resources are deployed (e.g., EC2, S3, RDS).

For each resource, add a tag with the key "Project" and a value that identifies the project (e.g., "ProjectA").

Ensure that all relevant resources are tagged appropriately.

View Cost Allocation in Cost Explorer:

Navigate to the Cost Explorer console.

Use the "Group by" option to group costs by the "Project" tag.

Review the cost details for each project based on the tags applied to the resources.

References:

Using Cost Allocation Tags

Analyzing Your Costs with Cost Explorer

To use tags to filter views in the AWS Cost Explorer console, the tags must be activated for cost allocation.

Activate User-Defined Tags for Cost Allocation:

Open the AWS Billing and Cost Management console.

In the navigation pane, choose "Cost Allocation Tags."

Activate the user-defined tags that you want to use for cost allocation.

Using AWS Systems Manager Patch Manager with a maintenance window is a best practice for automating OS patch management across instances in an Auto Scaling group.

Patch Manager: Allows for scheduled patching according to maintenance windows, ensuring minimal impact on application uptime.

RebootOption parameter: Setting this to RebootIfNeeded ensures patches are applied fully when a reboot is required.

AWS-RunPatchBaseline: This document automates the patching process and can be customized based on compliance requirements.