Setting up CloudWatch alarms (AWS CLI)

CloudWatch alarms enable us to initiate actions based on the state of data within our metrics. These actions may be sent to the Simple Notification Service (SNS). For server-based applications that use autoscaling, CloudWatch alarms can also initiate actions to autoscaling groups.

Getting ready

The following are the prerequisites for this recipe:

• A working AWS account
• Access to AWS Management Console
• You should have configured AWS CLI as discussed in the recipe Your First Lambda with AWS CLI in Chapter 1, Getting Started with Serverless Computing on AWS
• You should have created a metric with the name FailedLogins and namespace ServerlessProgrammingCookbook following the previous recipe...