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Medium RDS · regional

RDS for PostgreSQL DB instances should publish logs to CloudWatch Logs

Verifies that RDS for PostgreSQL DB instances publish the postgresql log to CloudWatch Logs, where it is kept durably and can be searched and alarmed on. The export does not decide what is logged: log_statement and log_min_duration_statement in the parameter group do. For a member of a Multi-AZ DB cluster, the export is set on the cluster.

service
RDS
severity
Medium
scope
evaluated in every region

How to fix it

In the console

RDS → Databases → the PostgreSQL DB instance → Modify → Log exports

PostgreSQL log
Selected; the upgrade and IAM database authentication error logs do not clear this check

With the AWS CLI

aws rds modify-db-instance --db-instance-identifier <db-instance-identifier> --cloudwatch-logs-export-configuration '{"EnableLogTypes":["postgresql"]}' --region <region>

With Terraform

  • Overwrites existing settings: enabled_cloudwatch_logs_exports is the complete list, so include every log type the instance already exports or the apply turns the others off.
resource "aws_db_instance" "this" {
  instance_class                  = var.instance_class
  enabled_cloudwatch_logs_exports = ["postgresql"]
}

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