Terraform Module: AWS VPC Nat Gateway notifications

Overview

CloudWatch Alarm that enables notifications to an SNS topic when VPC Nat Gateway has 0 active connections for more than 60 mins.

Creates the following resources:

• CloudWatch metric to send notifications via pre-existing SNS when the total number of concurrent active TCP connections through the NAT gateway is zero, which indicates that there are no active connections through the NAT gateway.
• Statistics: The most useful statistic is Max.

Examples

VPC Nat Gateway active cx zero notification

module "vpc-natgw-notifications" {
  source = "github.com/binbashar/terraform-aws-natgw-notifications.git?ref=v0.0.1"

  alarm_suffix   = "${var.environment}-account"
  send_sns       = true
  sns_topic_name = data.terraform_remote_state.notifications.outputs.sns_topic_name_bb_monitoring
}

Requirements

Name	Version
terraform	>= 0.12

Providers

Name	Version
aws	n/a

Inputs

Name	Description	Type	Default	Required
alarm_evaluation_periods	The number of periods over which data is compared to the specified threshold.	number	1	no
alarm_period	The period in seconds over which the specified statistic is applied, eg 3600 sec = 60 mins.	number	3600	no
alarm_suffix	Suffix to add to alarm name, used for separating different AWS account.	string	""	no
send_sns	If true will send message Successful AWS console login with the root account to SNS topic.	bool	false	no
sns_topic_name	The name of the SNS topic to send root login notifications.	string	n/a	yes

Outputs

No output.

TODO

• Add examples dir + associated terratests

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