I'm trying to log in to a database with this command:
psql -U user my_db
This is the error that gets thrown:
psql: FATAL: Peer authentication failed for user "user"
I figured it had something to do with my pg_hba.conf. I tried several things but couldn't get it to work. This is the relevant part of pg_hba.conf
# TYPE DATABASE USER ADDRESS METHOD
# "local" is for Unix domain socket connections only
local my_db user md5
local all all md5
# IPv4 local connections:
host my_db user 127.0.0.1/32 md5
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 ident
# Allow replication connections from localhost, by a user with the
# replication privilege.
local replication all peer
host replication all 127.0.0.1/32 ident
host replication all ::1/128 ident
I also get the same error when I first do su - postgres
and the try psql -U user
Edit: Turns out I was modifying the wrong pg_hba.conf. I solved the original problem, now I can log in like this: psql -U user my_db. But my application, which is running on the same device can't access the database with this pg_hba.conf. Checking the logs this is the line that shows up when my application makes new requests:
2019-12-10 16:18:51.144 +03 [29570] LOG: invalid length of startup packet