Postgres - can't acces database, no acces - django

Question

I am trying to access my postgres database but I get a permission denied error. I created database + table (was created in python but it is there):
sudo -u postgres psql
postgres=# create user lukasz1 with encrypted password '<password>';
postgres=# create database mydatabase owner lukasz1;
So far so good:
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
------------+----------+----------+-------------+-------------+-----------------------
mydatabase | lukasz1 | UTF8 | pl_PL.UTF-8 | pl_PL.UTF-8 | =Tc/lukasz1 +
| | | | | lukasz1=CTc/lukasz1
postgres | postgres | UTF8 | pl_PL.UTF-8 | pl_PL.UTF-8 |
template0 | postgres | UTF8 | pl_PL.UTF-8 | pl_PL.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | pl_PL.UTF-8 | pl_PL.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
(4 rows)
and lukasz1 is an owner of mydatabase.
But when I try to connect it I am get "permission denied".
I can't even select from my table to view it as permission is denied:
mydatabase=> select article_id from articles;
ERROR: permission denied for table articles
I checked multiple answers to similar questions and tried checking user valid_until and got an empty values in that column:
mydatabase=> select usename, valuntil from pg_user;
usename | valuntil
----------+----------
postgres |
lukasz |
lukasz1 |
(3 rows)
In other question I found that pgAdmin4 can bug this and I should change valid until to infinity,which I tried but without any result as permission was denied to make this change.
mydatabase=> alter user lukasz1 valid until 'infinity';
ERROR: permission denied
I checked privileges of the users and got this:
postgres=# select * from pg_user;
usename | usesysid | usecreatedb | usesuper | userepl | usebypassrls | passwd | valuntil | useconfig
----------+----------+-------------+----------+---------+--------------+----------+----------+-----------
postgres | 10 | t | t | t | t | ******** | |
lukasz | 16384 | f | f | f | f | ******** | |
lukasz1 | 17256 | f | f | f | f | ******** | |
lukasz2 | 17437 | f | f | f | f | ******** | |
(4 rows)
I turned out that even though lukasz1 is owner of the mydatabase that account can't do anything with databse.
Next thing I checked was default access privileges which was completly empty:
mydatabase=> \ddp
Default access privileges
Owner | Schema | Type | Access privileges
-------+--------+------+-------------------
(0 rows)
I tried changing password but it changed nothing.
ALTER USER lukasz1 WITH PASSWORD '<new password>';
I tried to create public schema but wasn't allowed as permission was denied:
mydatabase=> create schema public;
ERROR: permission denied for database mydatabase
All of that resulted, that docker container with web cannot access container with db as
password authentication failed for user "lukasz1"
I cannot even view hba_file:
mydatabase=> show hba_file;
ERROR: must be superuser or a member of pg_read_all_settings to examine "hba_file"
Can anyone please advice how can I make this work?
EDIT:
I checked the logins and were able to create lukasz as superuser.
usename | usesysid | usecreatedb | usesuper | userepl | usebypassrls
lukasz | 16384 | f | t | f | f
When using his credentials I am able to create tables, insert data into it etc.
psql -d mydatabase -U lukasz -W -c "insert into articles values (1, 'Łukasz', 'lukasz', 'title','tekst')"
But after creating containers I still get
django.db.utils.OperationalError: FATAL: password authentication failed for user "lukasz"
docker-compose.yml
version: "3.9"
services:
db:
image: postgres:9.6
environment:
- POSTGRES_DB=mydatabase
- POSTGRES_USER=lukasz
- POSTGRES_PASSWORD=password
networks:
- backend
web:
build: .
command: python3 manage.py runserver 127.0.0.1:8080
volumes:
- .:/code
ports:
- "8080:8080"
depends_on:
- db
networks:
- backend
networks:
backend:
driver: bridge
name: backend
setting.py
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'mydatabase',
'USER': 'lukasz',
'PASSWORD': 'password',
'HOST': 'db',
'PORT': 5432,
}
}
sqlalchemy engine:
engine = create_engine("postgresql://lukasz:password#db:5432/mydatabase")