Database Setup

This guide needs download URLs and commands to run in the terminal on the Pi.

Install PostgreSQL

Install the PostgreSQL server on the RPi.

If you’re like me, you’ll also want to install at least pgadmin4 on your workstation.

Configure PostgreSQL

• sudo -u postgres -i

• If you want to be able to access the database using a client like pgadmin from a machine other than the RPi: sudo nano /etc/postgresql/11/main/postgresql.conf

  • Find the line that says listen_addresses and uncomment and set to listen_addresses = '*'

• PgSql restricts access by host. You can either set it up to allow connections from any client, or you can explicitly allow the machines you’re going to connect from.

  • Open the pg_hba.conf file: sudo nano /etc/postgresql/11/main/pg_hba.conf

  • Add a line at the end like host all all 192.168.0.16 md5 to enable a specific client machine

  • Add a line at the end like host all all 0.0.0.0/0 md5 to enable any client

• Restart PgSQL: sudo systemctl restart postgresql

Setup PiggyBank DB

• Create a user “pb_user” with the password “piggybank” (removing the password from the code is a TODO item right now)

  sudo -u postgres -i

  create user pb_user with password 'piggybank'

• Create a database called “piggybank” owned by pb_user

  create database piggybank with owner pb_user