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Context

I am trying to enable BINARY LOGs on a MySQL RDS instance.

Issue

I used CALL mysql.rds_set_configuration('binlog retention hours', 24) without encountering an error.

And using CALL mysql.rds_show_configuration says "binlog retention hours" value is 24

But SHOW BINARY LOGS says "#1381 - You are not using binary logging"

Am I missing something ?

Additional information :

  • using SHOW GRANTS results in GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP...
  • I tried rebooting the instance. It didn't work.
  • automatic backups are enabled with a 1 day retention

useful documents

  • what was the edit @RolandoMySQLDBA ? – Hugo Sep 6 '18 at 9:11
  • The edit was just adding the mysql tag. – RolandoMySQLDBA Sep 6 '18 at 13:48
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Amazon will not allow the user to enable binlogs.

You have to enable automatic backups on the RDS Instance. The RDS framework will then enable binary logs for you. You cannot enable them manually. Please see this post in the AWS forums (which states the reverse, setting backup retention to 0 disables binary logging).

The default backup retention is 7 days. I recommend setting

mysql> CALL mysql.rds_set_configuration('binlog retention hours', 168)

so as to match the back retention

  • Thank you. I tried the 168 hours retention, sadly it didn't work. Automatic backups were already enabled on the instance. Any other ideas ? – Hugo Sep 6 '18 at 8:00
  • Please connect to MySQL and run SHOW GRANTS(); and post the output in the question. – RolandoMySQLDBA Sep 6 '18 at 13:47
  • Done. Also I just found this document docs.aws.amazon.com/dms/latest/userguide/… I will follow it and update the question with results – Hugo Sep 6 '18 at 15:16
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I found this blog post that answered the question: https://blog.pythian.com/enabling-binary-logging-rds-read-replica/

Essentially, if you make sure your "Backup retention period" for your RDS instance is set to > 0 days, this will enable binary logs.

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