aws-terraform-cloudwatch_alarm

This module deploys a customized CloudWatch Alarm, for use in generating customer notifications or Rackspace support tickets.

Basic Usage

module "alarm" {
 source = "git@github.com:rackspace-infrastructure-automation/aws-terraform-cloudwatch_alarm//?ref=v0.12.6"

 alarm_description        = "High CPU usage."
 comparison_operator      = "GreaterThanThreshold"
 customer_alarms_enabled  = true
 evaluation_periods       = 5
 metric_name              = "CPUUtilization"
 notification_topic       = [var.notification_topic]
 name                     = "MyCloudWatchAlarm"
 namespace                = "AWS/EC2"
 period                   = 60
 rackspace_alarms_enabled = true
 rackspace_managed        = true
 severity                 = "urgent"
 statistic                = "Average"
 threshold                = 90

 dimension {
   InstanceId = "i-123456"
 }
}

Full working references are available at examples

Terraform 0.12 upgrade

There should be no changes required to move from previous versions of this module to version 0.12.0 or higher.

Module variables

The following module variables changes have occurred:

Deprecations

• alarm_name - marked for deprecation as it no longer meets our style guide standards.

Additions

• name - introduced as a replacement for alarm_name to better align with our style guide standards.

Removals

• None

Requirements

Name	Version
terraform	>= 1.0.0
aws	>= 2.7.0

Providers

Name	Version
aws	>= 2.7.0

Modules

No Modules.

Resources

Name
aws_caller_identity
aws_cloudwatch_metric_alarm
aws_region

Inputs

Name	Description	Type	Default	Required
alarm_count	The number of alarms to create.	number	1	no
alarm_description	The description for the alarm.	string	""	no
alarm_name	The descriptive name for the alarm. This name must be unique within the user's AWS account. [Deprecated in favor of name]. It will be removed in future releases. name supercedes the alarm_name. Either name or alarm_name must contain a non-default value.	string	""	no
comparison_operator	The arithmetic operation to use when comparing the specified Statistic and Threshold. The specified Statistic value is used as the first operand. Either of the following is supported: GreaterThanOrEqualToThreshold, GreaterThanThreshold, LessThanThreshold, LessThanOrEqualToThreshold.	string	n/a	yes
customer_alarms_cleared	Specifies whether alarms will notify customers when returning to an OK status.	bool	false	no
customer_alarms_enabled	Specifies whether alarms will notify customers. Automatically enabled if rackspace_managed is set to false	bool	false	no
dimensions	The list of dimensions for the alarm's associated metric. For the list of available dimensions see the AWS documentation here.	list(map(string))	n/a	yes
environment	Application environment for which this network is being created. Preferred value are Development, Integration, PreProduction, Production, QA, Staging, or Test	string	"Development"	no
evaluation_periods	The number of periods over which data is compared to the specified threshold.	number	n/a	yes
metric_name	The name for the alarm's associated metric. See https://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/CW_Support_For_AWS.html for supported metrics.	string	n/a	yes
name	The descriptive name for the alarm. This name must be unique within the user's AWS account. name supercedes the deprecated alarm_name. Either name or alarm_name must contain a non-default value.	string	""	no
namespace	The namespace for the alarm's associated metric. See https://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/aws-namespaces.html for the list of namespaces.	string	n/a	yes
notification_topic	List of SNS Topic ARNs to use for customer notifications.	list(string)	[]	no
period	The period in seconds over which the specified statistic is applied.	number	60	no
rackspace_alarms_enabled	Specifies whether alarms will create a Rackspace ticket. Ignored if rackspace_managed is set to false	bool	false	no
rackspace_managed	Boolean parameter controlling if instance will be fully managed by Rackspace support teams, created CloudWatch alarms that generate tickets, and utilize Rackspace managed SSM documents.	bool	true	no
severity	The desired severity of the created Rackspace ticket. Supported values include: standard, urgent, emergency	string	"standard"	no
statistic	The statistic to apply to the alarm's associated metric. Either of the following is supported: SampleCount, Average, Sum, Minimum, Maximum	string	"Average"	no
tags	A map of tags to apply to all resources.	map(string)	{}	no
threshold	The value against which the specified statistic is compared.	string	n/a	yes
treat_missing_data	Sets how this alarm is to handle missing data points. The following values are supported: missing, ignore, breaching and notBreaching. Defaults to missing	string	"missing"	no
unit	The unit for the alarm's associated metric	string	null	no

Outputs

Name	Description
alarm_id	List of created alarm names