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CloudWatch Setup

Import AWS CloudWatch metrics for RDS/Aurora PostgreSQL.

Overview

For AWS RDS and Aurora PostgreSQL, CloudWatch provides OS-level metrics that are not available through direct PostgreSQL queries: CPU utilization, free memory, disk IOPS, and network throughput.

IAM Setup

Create an IAM user or role with the following permissions:

json
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "cloudwatch:GetMetricData",
        "cloudwatch:ListMetrics",
        "rds:DescribeDBInstances",
        "pi:GetResourceMetrics"
      ],
      "Resource": "*"
    }
  ]
}

Configuration

text
AWS Region: us-east-1
Access Key ID: AKIA...
Secret Access Key: your-secret-key
RDS Instance ID: your-db-instance-identifier

Metrics Imported

  • -CPUUtilization - CPU percentage
  • -FreeableMemory - available RAM
  • -ReadIOPS / WriteIOPS - disk I/O operations
  • -ReadLatency / WriteLatency - disk I/O latency
  • -DatabaseConnections - connection count
  • -FreeStorageSpace - available disk
  • -ReplicaLag - replication delay