PostgreSQL

Setup postgres user account

# elixirdbuser
# elixirdbpass

sudo -u postgres psql -c "create user elixirdbuser with superuser password 'elixirdbpass';"
sudo -u postgres psql -c "show hba_file;"

# go to hba_file and edit IPv4 local connections
# host    all    elixirdbuser    localhost    md5

# restart postgresql
sudo systemctl restart postgresql

Change hostname, user, pass in dev.exs
This might also need to be done in test.exs

username: "elixirdbuser",
password: "elixirdbpass",
hostname: "fields",