Updated on 2025-05-22 GMT+08:00

Common Faults

Excessive CPU, Memory, Disk, or Database Connection Usage or Disk IOPS on an RDS Instance

  • Check: Use Cloud Eye to check the CPU, memory, disk, or database connection usage or disk IOPS.
  • Recovery:
    1. Change the specifications to expand resources based on service requirements.
    2. Enable storage autoscaling to automatically increase storage capacity when needed.
    3. Enable overload protection for the application layer to keep high-priority services running smoothly.

Failed to Connect to a Backend RDS Instance

  • Check: Network connection failed.
  • Recovery:
    1. If this is a temporary failure, for example, a primary/standby switchover is in progress, connect to the RDS instance again at the application layer. For details, see RES09 Retries After Failures.
    2. If the connection to an overloaded RDS instance failed, rectify the fault by referring to "Excessive CPU, Memory, Disk, or Database Connection Usage or Disk IOPS on an RDS Instance."