RDS went into recovery by itself?

Question

One of our RDS instance went into recovery by itself without any notification/admin interactions

There were 
1. nothing meaningful in the event logs, only indicate it went into recovery and restarted
2. nothing logged in the MySQL error logs either

https://docs.google.com/spreadsheets/d/1H4BG-qbmvbfEGV5H9aL28cjuWIeVqMnrryDEuUlynzM/edit#gid=0

How do we find out what happened? (ex: if underlying hardware indeed failed?)

Vetrivel · Answer

#### Raising a case with AWS Technical Support is the only way to identify if there was any issue occurred in the underlying hardware.

Ray T · Answer

Most likely the hardware on the backend infrastructure has hit some issue - could be disk failure or node failure - check with AWS support by raising a case and find out the actual reason why.

bryanus · Answer

Just had this happen to my db.t4g instance. I don't see anything in my metrics or logs that would cause something like this to occur. I lost all my CPU credits as a result. Thankfully the database was recovered afaik.

RDS went into recovery by itself?

Raising a case with AWS Technical Support is the only way to identify if there was any issue occurred in the underlying hardware.

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