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

To restrict access to an Amazon S3 bucket to Amazon EC2 instances in a VPC only, and ensure all traffic is over the AWS private network, the SysOps administrator should create a VPC endpoint for the S3 bucket and create an S3 bucket policy that conditionally limits all S3 actions on the bucket to the VPC endpoint as the source.

Create a VPC Endpoint for S3:

Open the VPC console.

Choose "Endpoints" and then "Create Endpoint."

Select the service name "com.amazonaws.[region].s3."

Choose the VPC and the subnets where the EC2 instances reside.

Configure the route tables to include the VPC endpoint.

Create an S3 Bucket Policy:

Open the S3 console and select the bucket.

Go to the "Permissions" tab and edit the bucket policy.

Add a condition to the policy to allow access only from the VPC endpoint.

Example policy:

{

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

"Statement": [

{

"Effect": "Allow",

"Principal": "*",

"Action": "s3:*",

"Resource": [

"arn:aws:s3:::your-bucket-name",

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

],

"Condition": {

"StringEquals": {

"aws:sourceVpce": "vpce-12345678"

}

}

}

]

}

Amazon S3 VPC Endpoints

Amazon S3 Bucket Policies

To minimize costs while moving from EC2 instances to AWS Fargate, Compute Savings Plans are the most flexible and cost-effective option. Compute Savings Plans apply to a variety of compute services including AWS Fargate, Amazon EC2, and AWS Lambda, allowing for greater flexibility in managing costs as the company transitions to using only Fargate.

Compute Savings Plans:

Savings Plans provide significant savings over On-Demand pricing, up to 66% savings.

Compute Savings Plans offer the flexibility to move across instance types, AWS Regions, and operating systems.

Payment Options:

The No Upfront payment option provides the most flexibility and avoids large upfront capital expenditures.

The Partial Upfront payment option offers more savings but requires an initial payment.

1-Year Term:

A 1-year term is suitable for the company's 6-month transition period, allowing for cost savings without a long-term commitment.

AWS Savings Plans

Compute Savings Plans

For an RDS instance that needs high availability and automatic failover capabilities, setting it up as a Multi-AZ deployment is the most effective solution:

Multi-AZ Deployment: This feature allows Amazon RDS to automatically provision and manage a synchronous standby replica of your database in a different Availability Zone (AZ). The primary DB instance and the standby replica contain the same data, providing data redundancy and fail-safe mechanism.

Automatic Failover: In the event of a planned or unplanned outage of your primary DB instance (including DB instance failure, AZ failure, or network failure), RDS automatically fails over to the standby so that database operations can resume quickly without administrative intervention.

Data Integrity: This setup ensures no data loss for committed transactions, as the standby replica is always in sync with the primary.

By enabling Multi-AZ deployment, you ensure that your database environment has high availability and robustness, addressing both disaster recovery and operational continuity without losing any committed transactions.