Postgresql dump permission denied

Question

I get this error while trying to dump database, i entered

linuxuser $ sudo su postgres
linuxuser $ [sudo] password for linuxuser:...
$ pg_dump -h localhost mydb          


        

Answer 1

first thing you have to do is do not switch to user postgres. The use this command for backup:

pg_dump -U username -h localhost dbname > /db.sql