Cannot run 'kong migrations bootstrap' ( Ident authentication failed for user "kong")

Question

I'm learning to use Kong. I install it on centos 7. I follow the tutorial from https://docs.konghq.com/install/centos/ I stuck on

kong migrations bootstrap [-c /path/to/kong.conf]

I've already install Postgres on Centos by following this tutorial https://www.digitalocean.com/community/tutorials/how-to-install-and-use-postgresql-on-centos-7

I've also created kong Database and User already

And already execute this command to setup password for kong user

ALTER USER kong WITH PASSWORD 'password';

Here is my kong.conf

pg_host = 127.0.0.1
pg_port = 5432
pg_timeout = 5000
pg_user = kong
pg_password = password
pg_database = kong

When I execute command kong migrations bootstrap -c kong.conf I will get this error

Error: [PostgreSQL error] failed to retrieve PostgreSQL server_version_num: FATAL: Ident authentication failed for user "kong"

I'm wasting my time about 3-4 hours on this. I really need help.

**Edit this is my pg_hba.conf

host    all             all             127.0.0.1/32            md5
host    all             all             ::1/128                 md5

Ps. I've found it somewhere recommended to change it as above from

host    all             all             127.0.0.1/32            ident
host    all             all             ::1/128                ident

Answer 1

for IPv4 local connections:

host all all 127.0.0.1/32 trust
host all all 0.0.0.0/0 trust

I made this at its' working !