Steps to reproduce:

1. Install template https://www.zabbix.com/integrations/postgresql
2. Try to monitor remote DB

Result:
No macro/parameter coded to the UserParameter commands for password usage.
Example in the documentation with trust in pg_hba is useless and also not secure.
Basically, invocation with an empty PG.{host,user,db} will work with default pg_hba.
Option with .pgpass will make passwords visible to zabbix user.

Expected:
-w for plsql with macro