descriptionを気軽な名前で作ってしまって、あとでちょこっと変更したいなーと思って terraform planするとforce new resourceになってしまう。


AWS: aws_security_group - Terraform by HashiCorp

description - (Optional, Forces new resource) The security group description. Defaults to “Managed by Terraform”. Cannot be “”. NOTE: This field maps to the AWS GroupDescription attribute, for which there is no Update API. If you’d like to classify your security groups in a way that can be updated, use tags.