Datadog monitoring RDS

RDS Monitoring

Memory

Alert when memory is under 128 Mb

aws_rds_freeable_memory_average < 128*1024*1024

DB Connections

Alert when DB connection number is greater than 1000

aws_rds_database_connections_average > 1000

Number of connections has increased 10 times in last hour

aws_rds_database_connections_average / aws_rds_database_connections_average offset 1h > 10

CPU Usage

CPU usage is greater than 95% of the instance

aws_rds_cpuutilization_average > 0.95

Storage

Available storage is lower than 512 Mb

aws_rds_free_storage_space_average < 512*1024*1024

PromQL query will alert you if you’re going to run out of storage in the next 48 hours

predict_linear(aws_rds_free_storage_space_average[48h], 48 * 3600) < 0

Read/Write Latency

Read Latency is over 250 ms

aws_rds_read_latency_average > 0.250

Write Latency is over 250 ms

aws_rds_write_latency_average > 0.250

Network I/O

network traffic is down

aws_rds_network_receive_throughput_average = 0 AND aws_rds_network_transmit_throughput_average = 0

Read/Write IOPS

Read IOPS greater than 2 500 operations per second

aws_rds_read_iops_average > 2500

Write IOPS greater than 2 500 operations per second

aws_rds_write_iops_average > 2500