Before building we need update package manager:

sudo apt update

Install required packages:

sudo apt install python3 python3-pip python3-virtualenv libpq-dev supervisor

Then, install the Postgres package:

sudo apt install postgresql

Start Postgres server:

sudo service postgresql start

Switch over to the postgres account on your server by typing:

sudo -i -u postgres

Sign in as postgres user:

psql

Create database with name market, user dbm with password and grant all privileges on market database to dbm. Fix password and privileges in accordance to security requirements.:

CREATE DATABASE market;
CREATE USER dbm WITH ENCRYPTED PASSWORD '******';
GRANT ALL PRIVILEGES ON DATABASE market TO dbm;

Repeat last commands to create test database with test user. Keep this as is (recommended):

CREATE DATABASE market_test;
CREATE USER dbm_test WITH ENCRYPTED PASSWORD 'password_test';
GRANT ALL PRIVILEGES ON DATABASE market_test TO dbm_test;

Leave psql and postgres user.

Create .env file with postgres URI. Use password created before for dbm user. This file is able to contain other environmental variables declared in settings.py:

# .env
DB_URI="postgres://dbm:******@localhost:5432/market"

Create virtual environment with name venv and activate this:

python3 -m venv venv && \
source venv/bin/activate

Install all python packages from requirements.txt:

python3 -m pip install -r requirements.txt

Using virtual environment install requirements.test.txt:

python3 -m pip install -r requirements.test.txt

Run tests:

pytest

This application uses Supervisor:uWSGI:Flask stack. .ini file already created. Fix app.ini in accordance to server preferences.

Ensure that supervisor is running after installation:

sudo service supervisor restart

Create yandex-bs-entrance.conf file in /etc/supervisor/conf.d with sudo:

[program:yandex-bs-entrance]
user = entrant
directory = /home/entrant/yandex-bs-entrance
command=/home/entrant/yandex-bs-entrance/venv/bin/uwsgi --ini app.ini
autostart=true
autorestart=true
stderr_logfile = /home/entrant/yandex-bs-entrance/err.log
stdout_logfile = /home/entrant/yandex-bs-entrance/out.log
stopsignal=INT

Sign in supervisorctl:

sudo supervisorctl

Reread and update supervisor:

reread
update

Start the service:

start yandex-bs-entrance

API is running on 0.0.0.0:8080.