$ sudo mkdir /var/lib/pgadmin
$ sudo mkdir /var/log/pgadmin
$ sudo chown $USER /var/lib/pgadmin
$ sudo chown $USER /var/log/pgadmin
$ python3 -m venv pgadmin4
$ source pgadmin4/bin/activate
(pgadmin4) $ pip install pgadmin4
...
(pgadmin4) $ pgadmin4
NOTE: Configuring authentication for SERVER mode.
Enter the email address and password to use for the initial pgAdmin user account:
Email address: user@domain.com
Password:
Retype password:
Starting pgAdmin 4. Please navigate to http://127.0.0.1:5050 in your browser.
* Serving Flask app "pgadmin" (lazy loading)
* Environment: production
WARNING: Do not use the development server in a production environment.
Use a production WSGI server instead.
* Debug mode: off