Publishing dimensions from JSON log events or from space-delimited log events using aws_cloudwatch_log_metric_filter · Issue #19521 · hashicorp/terraform-provider-aws · GitHub
CloudWatchのロググループに手動でテスト用ログを投入したい。 - Qiita
Create AWS CloudWatch metric filters via Terraform on CloudWatch LogGroups | by Frans Maree | Medium
AWSの複雑な仕組みをTerraform化で紐解く事例 | 外道父の匠
Create an AWS CloudWatch Metric Filter and Alarm in Terraform