RDSMemoryUtilization #
Meaning #
Alert is triggered when an RDS instance has low available memory
Impact #
- Performanced could be degraded
- Very low freeable memory causes unexpected downtime on your instance
Diagnosis #
Examine clients connected to the database
Even when inactive, connected clients consume memory on the server.
Check review hardware configuration
Mitigation #
Reduce number of connected clients (and/or max connections)
Upscale instance type
Warning: Modifying an AWS instance generates downtime:
- Multi-AZ enabled: Instance failover will be triggered (< 1 minute downtime)
- No multi-az: Instance will restarted with new hardware (~15 minutes downtime)