Question

How do you create a CloudWatch alarm for an EC2 instance's CPU utilization?

Answer 1

Here is the code.

import boto3

cloudwatch = boto3.client('cloudwatch')

response = cloudwatch.put_metric_alarm(
    AlarmName='EC2_CPU_Utilization_Alarm',
    AlarmDescription='Alarm when server CPU exceeds 70%',
    ActionsEnabled=True,
    AlarmActions=[
        'arn:aws:sns:us-west-2:123456789012:my-sns-topic'
    ],
    MetricName='CPUUtilization',
    Namespace='AWS/EC2',
    Statistic='Average',
    Dimensions=[
        {
            'Name': 'InstanceId',
            'Value': 'i-0123456789abcdef0'
        },
    ],
    Period=300,
    EvaluationPeriods=1,
    Threshold=70.0,
    ComparisonOperator='GreaterThanThreshold'
)

print(response)