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A company's application on EC2 instances relies on a Single-AZ RDS for MySQL DB instance. The SysOps administrator needs to ensure failover to minimize downtime.
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A company needs to monitor the disk utilization of Amazon Elastic Block Store (Amazon EBS) volumes The EBS volumes are attached to Amazon EC2 Linux Instances A SysOps administrator must set up an Amazon CloudWatch alarm that provides an alert when disk utilization increases to more than 80%. Which combination of steps must the SysOps administrator lake lo meet these requirements? (Select THREE.)
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Question 294 - SOA-C02 discussion

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A company is experiencing issues with legacy software running on Amazon EC2 instances. Errors occur when the total CPU utilization on the EC2 instances exceeds 80%. A short-term solution is required while the software is being rewritten. A SysOps administrator is tasked with creating a solution to restart the instances when the CPU utilization rises above 80%.

Which solution meets these requirements with the LEAST operational overhead?

A.
Write a script that monitors the CPU utilization of the EC2 instances and reboots the instances when utilization exceeds 80%. Run the script as a cron job.
Answers
A.
Write a script that monitors the CPU utilization of the EC2 instances and reboots the instances when utilization exceeds 80%. Run the script as a cron job.
B.
Add an Amazon CloudWatch alarm for CPU utilization and configure the alarm action to reboot the EC2 instances.
Answers
B.
Add an Amazon CloudWatch alarm for CPU utilization and configure the alarm action to reboot the EC2 instances.
C.
Create an Amazon EventBridge rule using the predefined patterns for CPU utilization of the EC2 instances. When utilization exceeds 80%, invoke an AWS Lambda function to restart the instances.
Answers
C.
Create an Amazon EventBridge rule using the predefined patterns for CPU utilization of the EC2 instances. When utilization exceeds 80%, invoke an AWS Lambda function to restart the instances.
D.
Add an Amazon CloudWatch alarm for CPU utilization and configure an AWS Systems Manager Automation runbook to reboot the EC2 instances when utilization exceeds 80%.
Answers
D.
Add an Amazon CloudWatch alarm for CPU utilization and configure an AWS Systems Manager Automation runbook to reboot the EC2 instances when utilization exceeds 80%.
Suggested answer: B

Explanation:

The simplest and most efficient solution to ensure that EC2 instances are restarted when CPU utilization exceeds 80% is to use Amazon CloudWatch alarms:

Create a CloudWatch Alarm: Navigate to the CloudWatch dashboard in the AWS Management Console and create a new alarm. Set the alarm to monitor the CPU utilization metric of the EC2 instances.

Set the Alarm Condition: Configure the alarm to trigger when the CPU utilization exceeds 80%. You can specify this threshold in the alarm settings.

Configure Alarm Actions: In the actions settings of the alarm, select the option to reboot the instance. This action ensures that the instance is automatically restarted whenever the alarm condition is met, without the need for manual intervention or additional scripts.

This method leverages AWS's native capabilities, minimizing operational overhead and eliminating the need for external tools or custom scripts.

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asked 16/09/2024
franz yap
38 questions
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