Wie ARN Wert für AWS Alarm in Terraforming

Question

Ich bin mit Terraforming bekommen einen AWS Alarm unten zu schaffen,

resource "aws_cloudwatch_metric_alarm" "terraform-product-monitoring-dynamoDB-UserErrors" { 
    alarm_name    = "terraform-product-monitoring-dynamoDB-UserErrors" 
    comparison_operator  = "GreaterThanOrEqualToThreshold" 
    evaluation_periods  = "2" 
    metric_name    = "UserErrors" 
    namespace     = "AWS/DynamoDB" 
    period     = "120" 
    statistic     = "Sum" 
    threshold     = "1" 
    alarm_description   = "This metric monitors the UserErrors for DynamoDB" 
    alarm_actions    = ["${module.admin_sns_email_topic.arn}"] 
    insufficient_data_actions = [] 
} 

ich die arn für den Alarm erhalten möchten, aber

"${aws_cloudwatch_metric_alarm.terraform-product-monitoring-dynamoDB-UserErrors.arn}" 

gibt der Fehler

Resource 'aws_cloudwatch_metric_alarm.terraform-product-monitoring-dynamoDB-UserErrors' does not have attribute 'arn' for variable 'aws_cloudwatch_metric_alarm.terraform-product-monitoring-dynamoDB-UserErrors.arn' 

Irgendeine Idee?

Prost

Hammer

Answer 1

Nicht alle Ressourcen haben ARN. Wenn Sie erhalten müssen Sie den Namen der Ressource aws_cloudwatch_metric_alarm, verwenden id

Referenz:

https://www.terraform.io/docs/providers/aws/r/cloudwatch_metric_alarm.html#id