feat: add CloudWatch alarms for RDS CPU, connections, and storage monitoring

Author: kazmithub

monitoring.tf

@@ -0,0 +1,38 @@
+# CloudWatch Alarms for RDS
+# Monitors critical database metrics
+
+resource "aws_cloudwatch_metric_alarm" "rds_cpu" {
+  alarm_name          = "rds-cpu-utilization-high"
+  comparison_operator = "GreaterThanThreshold"
+  evaluation_periods  = 3
+  metric_name         = "CPUUtilization"
+  namespace           = "AWS/RDS"
+  period              = 300
+  statistic           = "Average"
+  threshold           = 80
+  alarm_description   = "RDS CPU utilization above 80%"
+}
+
+resource "aws_cloudwatch_metric_alarm" "rds_connections" {
+  alarm_name          = "rds-connections-high"
+  comparison_operator = "GreaterThanThreshold"
+  evaluation_periods  = 2
+  metric_name         = "DatabaseConnections"
+  namespace           = "AWS/RDS"
+  period              = 300
+  statistic           = "Average"
+  threshold           = 100
+  alarm_description   = "RDS connections exceeding threshold"
+}
+
+resource "aws_cloudwatch_metric_alarm" "rds_storage" {
+  alarm_name          = "rds-free-storage-low"
+  comparison_operator = "LessThanThreshold"
+  evaluation_periods  = 2
+  metric_name         = "FreeStorageSpace"
+  namespace           = "AWS/RDS"
+  period              = 300
+  statistic           = "Average"
+  threshold           = 5368709120  # 5GB in bytes
+  alarm_description   = "RDS free storage below 5GB"
+}