Pg_dump: [Archiver (DB)] connection to Database "dBASE" Failed:FATAL:Peer authentication failed for user "Postgres"

"Peer Authentication" means that it ' s comparing your database username against your Linux username. It should work if your ' re logged in as postgres . You probably don ' t want md5 pg_hba to hits that rule in, as the postgres database user generally doesn ' t has a password.–

The problem you has is, so if u dont define the Host, your system would decide.

Explicit add "-H localhost", this would fix it

Pg_dump: [Archiver (DB)] connection to Database "dBASE" Failed:FATAL:Peer authentication failed for user "Postgres"