fixing PG::ConnectionBad: FATAL: password authentication failed for user "postgres"

gistfile1.txt

#go to hb_hba.conf
local   all         postgres                          ident

#go to psql
sudo -u postgres psql

#enter the following command to set or change the password
ALTER USER postgres PASSWORD 'actual_password';

#go to hb_hba.conf to change this line back
local   all         postgres                          md5


#try to rake db:create or migrate again