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

To ensure that database credentials are never stored in plaintext and the password is rotated every 30 days, use AWS Secrets Manager:

Store Credentials in Secrets Manager:

Open the AWS Secrets Manager console.

Click on "Store a new secret."

Select "RDS database credentials" and provide the necessary details (username, password, database instance).

Configure the secret's name and details.

Enable Automatic Rotation:

During the secret creation process, enable automatic rotation.

Specify an automatic rotation schedule of 30 days.

Choose the Lambda function that Secrets Manager will use to update the database password automatically.

Update Lambda Functions:

Update each Lambda function to retrieve the database password from Secrets Manager.

Use the AWS SDK in your Lambda code to access Secrets Manager and fetch the secret value.

AWS Secrets Manager

Rotating AWS Secrets Manager Secrets

Retrieve Secrets from AWS Lambda

To efficiently find out how often the AWS Lambda function has failed in the last 7 days, use Amazon CloudWatch Logs Insights.

Access CloudWatch Logs Insights:

Navigate to the CloudWatch console.

Select "Logs Insights" from the navigation pane.

To reduce the cost of running the application without affecting availability or design, applying rightsizing recommendations from AWS Cost Explorer to reduce the instance size is the best approach.

Rightsizing Recommendations:

AWS Cost Explorer provides rightsizing recommendations that help you identify underutilized instances.

By resizing instances to a more appropriate size based on their utilization, you can reduce costs while maintaining performance.

Steps to Implement:

Open the AWS Cost Management console.

Navigate to "Cost Explorer" and select "Rightsizing Recommendations."

Review the recommendations and choose to resize the instances based on their actual usage.

Advantages:

Rightsizing ensures that you are not paying for unused resources while maintaining the necessary capacity and performance for your application.

AWS Cost Explorer Rightsizing Recommendations

To remediate the InsufficientInstanceCapacity error when scaling the Auto Scaling group, the SysOps administrator can take the following actions:

Change the Instance Type:

Insufficient capacity errors can occur if there is not enough available capacity for the specified instance type in the selected Availability Zone.

Changing to a different instance type might resolve the capacity issue.

To automatically remediate security groups that allow unrestricted SSH access, the following configuration is recommended:

AWS Config Managed Rule (restricted-ssh):This rule checks whether security groups disallow unrestricted incoming SSH traffic. If a security group allows SSH access from 0.0.0.0/0 or ::/0, it is considered noncompliant.

AWS Systems Manager Automation Runbook (AWS-DisableIncomingSSHOnPort22):This runbook removes rules that allow unrestricted incoming SSH traffic on TCP port 22 for specified security groups. By associating this runbook with the AWS Config rule, noncompliant security groups can be automatically remediated without manual intervention.

This setup ensures that any security group violating the SSH access policy is promptly corrected, enhancing the security posture of the EC2 instances.

When you create a hosted zone, Route 53 automatically creates a name server (NS) record and a start of authority (SOA) record for the zone. https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/migrate-dns-domain-in-use.html#migrate-dns-create-hosted-zone

https://en.wikipedia.org/wiki/SOA_record

To fix the "403 Forbidden - Access Denied" error when accessing a static website hosted on Amazon S3, you need to ensure that the objects in the bucket have the appropriate permissions for public access. Here’s how to do it:

Login to AWS Management Console:

Open the Amazon S3 console at Amazon S3 Console.

Navigate to the Bucket:

In the S3 console, select the bucket hosting the static website.

Add a Bucket Policy:

Go to the Permissions tab.

Choose Bucket Policy and add the following policy to grant public read access to all objects in the bucket:

{

"Version": "2012-10-17",

"Statement": [

{

"Effect": "Allow",

"Principal": "*",

"Action": "s3:GetObject",

"Resource": "arn:aws:s3:::your-bucket-name/*"

}

]

}

Save the Policy:

After adding the policy, save the changes.

This policy ensures that all objects in the bucket are publicly accessible, resolving the 403 Forbidden error.

Hosting a Static Website on Amazon S3

Bucket Policy Examples

To address the performance issues of a CPU-heavy application running on a t2.large EC2 instance, the best course of action is to upgrade to a compute-optimized instance. Compute-optimized instances provide a higher ratio of CPU resources compared to memory, making them ideal for applications that require high CPU performance.

Upgrade to a Compute-Optimized Instance:

Identify a suitable compute-optimized instance type, such as the c5.large, which offers better CPU performance compared to the t2.large.

Stop the current EC2 instance and change the instance type to the chosen compute-optimized instance.