## Peer vs Password
* See [this stackoverflow](https://stackoverflow.com/questions/18664074/getting-error-peer-authentication-failed-for-user-postgres-when-trying-to-ge)
* See [the docs on authentication methods](https://www.postgresql.org/docs/9.3/auth-methods.html)

In `/etc/postgresql/15/main/` edit the file `pg_hba.conf`. Choose `peer` or `md5` as needed.

Change
```
local   all             all                                peer
```
to
```
local   all             all                                md5
```