Getting error: Peer authentication failed for user “postgres”, when trying to get pgsql working with rails

Question

When i try to make postgres work with Rails.

FATAL: Peer authentication failed for user "postgres"

i have 9.6 version and 9.5 postgresql i remember i created a user called postgresql

for connect with it i do first:
sudo su
su - postgres
psql
\l

My users: http://pastebin.com/kKH4qjsr Here's my pg_hba.conf : http://pastebin.com/VnxbQCDW i put in my project postgres but i cannot connect

Answer 1

In your pg_hba.conf file, use the trust auth method instead of md5:

# IPv4 local connections:

host    all             all             127.0.0.1/32            trust