Log in to the TDSQL console and click an instance ID to enter the instance management page. On the Monitoring and Alarms tab, you can view three IO metrics.
|IOUsageRate||Instance monitoring||Maximum IO utilization of the source node|
|IOUsageRateShard||Shard monitoring||IO utilization|
|IOUsageRateNode||Node monitoring||IO utilization|
In actual use, the above three IO metrics may increase abnormally even during off-peak hours. Alarms configured for them, if any, will be triggered.
Possible causes of the abnormal IO increase include:
This issue involves alarms. We have located it and are fixing it. You can try the following workarounds for the time being: