Install PostgreSQL in Linux

Back up

Installation process

Setting up PostgreSQL in Manjaro Linux is very easy.

Just follow these steps and you’ll have a working installation in no time.

Install the postgresql package:

sudo pacman -S postgresql postgis

Switch to the postgres user account and initialize the database cluster:

sudo su postgres -l # or sudo -u postgres -i
initdb --locale $LANG -E UTF8 -D '/var/lib/postgres/data/'
exit

Options for initdb are as follows:

• --locale is the one defined in /etc/locale.conf.
• -E is the default encoding for new databases.
• -D is the default location for storing the database cluster.

Now, start and enable the postgresql.service:

sudo systemctl enable --now postgresql.service

You can check PostgreSQL’s version with:

psql --version
# psql (PostgreSQL) 13.4

Create a DB user for your app (optional)

sudo su postgres -c psql
CREATE USER deployer WITH PASSWORD 'somepassword';
ALTER ROLE deployer WITH CREATEDB;
\q

On Phoenix you’d use this in config/dev.exs like this:

# Configure your database
config :my_app, MyApp.Repo,
  username: "deployer",
  password: "somepassword",
  database: "my_app_dev",
  hostname: "localhost",
  show_sensitive_data_on_connection_error: true,
  pool_size: 10

That’s it! 🎉

Links

• ArchWiki – PostgreSQL
• ArchWiki – systemd