Cannot connect django to postgres running inside docker container

Question

My django app is not dockerized, but I run postgres inside docker container using docker-compose.yml script. After docker-compose up I can connect to db with dbeaver, but not with django app. Every time I'm getting an error:

django.db.utils.OperationalError: could not translate host name "db" to address: 
Temporary failure in name resolution

File docker-compose.yml:

version: "3.9"
services:
  db:
    image: postgres:13
    volumes:
      - postgres_data:/var/lib/postgresql/data/
    environment:
      - "POSTGRES_HOST_AUTH_METHOD=trust"
      - POSTGRES_USER="postgres"
      - POSTGRES_PASSWORD="postgres"
      - POSTGRES_DB="postgres"
    ports:
      - 5432:5432
volumes:
  postgres_data

Django project file config/settings.py:

...
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': env.str("DB_NAME"),
        'USER': env.str("DB_USER"),
        'PASSWORD': env.str("DB_PASS"),
        'HOST': env.str("DB_HOST"),
        'PORT': env.decimal("DB_PORT")
    }
}

Alexander P · Accepted Answer · 2021-09-21 12:16:53Z

1

It was some kind of pipenv error. When I restarted terminal and executed pipenv shell again and then python manage.py runserver everything worked just fine

answered Sep 21, 2021 at 12:16

Alexander P

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