psql authentication fails with --host=localhost

问题

With the command:

psql --dbname=mattermost --username=mmuser --password

then if I place the password it succeeds, but if I write:

psql --host=localhost --dbname=mattermost --username=mmuser --password

then the same password gives authentication fails

How can I resolve this?

回答1:

So in this one try using

 psql --host=127.0.0.1 --dbname=mattermost --username=mmuser --password

check the pg_hba.conf for further info. So if below line in your pg_hba.conf file

 host    all         all        localhost             trust

then it will start working with localhost also

来源：https://stackoverflow.com/questions/53802832/psql-authentication-fails-with-host-localhost