Ensure server parameter 'log_disconnections' is set to 'ON' for PostgreSQL Database Server

Description:

Enable 'log_disconnections' on 'PostgreSQL Servers'.

Rationale:

Enabling 'log_disconnections' helps PostgreSQL Database to 'Logs end of a session', including duration, which in turn generates query and error logs. Query and error logs can be used to identify, troubleshoot, and repair configuration errors and sub-optimal performance.

Enabling this setting will enable a log of all disconnections. If this is enabled for a high traffic server, the log may grow exponentially.

From Azure Portal

1. From Azure Home select the Portal Menu
2. Go to 'Azure Database' for 'PostgreSQL server'
3. For each database, click on 'Server parameters'
4. Search for 'log_disconnections'.
5. Click 'ON' and save.

From Powershell

Use the below command to update 'log_disconnections' configuration.

az postgres server configuration set --resource-group --server-name --name log_disconnections --value on