How to Install PostgreSQL on AlmaLinux


PostgreSQL is a popular open-source relational database management system. Here are the steps to install PostgreSQL on AlmaLinux:

1. Update the package index:

sudo dnf update

2. Install the PostgreSQL server and client packages:

sudo dnf install postgresql-server postgresql-contrib postgresql

3. Initialize the database:

sudo postgresql-setup --initdb

4. Start the PostgreSQL service and enable it to start automatically on boot:

sudo systemctl start postgresql
sudo systemctl enable postgresql

5. Configure the PostgreSQL user and password:

By default, PostgreSQL creates a system user named "Postgres" with no password. To set a password for this user, use the following command:

sudo passwd postgres

6. Configure PostgreSQL to listen on all network interfaces:

sudo nano /var/lib/pgsql/data/pg_hba.conf

Find the following line:

# IPv4 local connections:
host all all ident

Add the following line after it:

host all all md5

Save the file and exit the text editor.

7. Restart the PostgreSQL service:

sudo systemctl restart postgresql

You have successfully installed PostgreSQL on AlmaLinux. To create and manage PostgreSQL databases, you can use the "psql" command-line tool or a graphical client such as pgAdmin.

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