Information
Set audit_log_enabled to include CONNECTION on MySQL Servers.
Rationale:
Enabling CONNECTION helps MySQL Database to log items such as successful and failed connection attempts to the server. Log data can be used to identify, troubleshoot, and repair configuration errors and suboptimal performance.
Impact:
There are further costs incurred for storage of logs. For high traffic databases these logs will be significant. Determine your organization's needs before enabling.
Solution
From Azure Portal
From Azure Home select the Portal Menu.
Select Azure Database for MySQL servers.
Select a database.
Under Settings, select Server parameters.
Update audit_log_enabled parameter to ON.
Update audit_log_events parameter to have at least CONNECTION checked.
Click Save.
Under Monitoring, select Diagnostic settings.
Select + Add diagnostic setting.
Provide a diagnostic setting name.
Under Categories, select MySQL Audit Logs.
Specify destination details.
Click Save.
It may take up to 10 minutes for the logs to appear in the configured destination.
Default Value:
By default audit_log_events is disabled.