At every start of the PostgreSQL database, there are some startup scripts which try to open the TCP or UNIX domain health checks whenever you add a database endpoint.
As this is merely Legitimate as that tries to open and close connection of TCP or UNIX to the database. Once you add Database Endpoint to the PostgreSQL Database.
As to overcome this, we can add the filtering to the login provider as it drops the message every time Database Endpoint login.
PostgreSQL