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Exam AWS-SysOps topic 1 question 193 discussion

Exam question from Amazon's AWS-SysOps
Question #: 193
Topic #: 1
[All AWS-SysOps Questions]

A user has created an Auto Scaling group with default configurations from CLI. The user wants to setup the CloudWatch alarm on the EC2 instances, which are launched by the Auto Scaling group. The user has setup an alarm to monitor the CPU utilization every minute. Which of the below mentioned statements is true?

  • A. It will fetch the data at every minute but the four data points [corresponding to 4 minutes] will not have value since the EC2 basic monitoring metrics are collected every five minutes
  • B. It will fetch the data at every minute as detailed monitoring on EC2 will be enabled by the default launch configuration of Auto Scaling
  • C. The alarm creation will fail since the user has not enabled detailed monitoring on the EC2 instances
  • D. The user has to first enable detailed monitoring on the EC2 instances to support alarm monitoring at every minute
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
CloudWatch is used to monitor AWS as well as the custom services. To enable detailed instance monitoring for a new Auto Scaling group, the user does not need to take any extra steps. When the user creates an Auto Scaling launch config using CLI, each launch configuration contains a flag named
InstanceMonitoring.Enabled. The default value of this flag is true. Thus, by default detailed monitoring will be enabled for Auto Scaling as well as for all the instances launched by that Auto Scaling group.
by chop at Jan. 11, 2020, 6:17 p.m.
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e47cf49
6 months, 3 weeks ago
A is the answer
upvoted 1 times
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UDK
3 years, 6 months ago
Detailed monitoring is enabled by default when you create a launch configuration using the AWS CLI or an SDK. https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-instance-monitoring.html
upvoted 4 times
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awscertified
3 years, 7 months ago
B. It will fetch the data at every minute as detailed monitoring on EC2 will be enabled by the default launch configuration of Auto Scaling
upvoted 2 times
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chop
3 years, 7 months ago
D. The user has to first enable detailed monitoring on the EC2 instances to support alarm monitoring at every...https://docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-config.html
upvoted 1 times
chop
3 years, 6 months ago
Upon more investigation, I've found that using the default CLI configuration, detailed monitoring is already enabled, therefore B is the correct answer.
upvoted 6 times
albert_kuo
1 year, 7 months ago
https://docs.aws.amazon.com/autoscaling/ec2/userguide/enable-as-instance-metrics.html
upvoted 1 times
albert_kuo
1 year, 7 months ago
By default, basic monitoring is enabled when you create a launch template using the AWS CLI. Detailed monitoring is enabled by default when you create a launch configuration using the AWS CLI.
upvoted 1 times
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