$psql -h localhost -U zabbixus zabbixdb
psql (12.3)
Type "help" for help.
zabbixdb=> \du
List of roles
Role name | Attributes | Member of
-----------+------------------------------------------------------------+-----------
postgres | Superuser, Create role, Create DB, Replication, Bypass RLS | {}
zabbixus | | {}
我的postgresql 数据库的zabbixus 是普通用户 为什么登录不需要输入密码