PostgreSQL is a powerful, open-source relational database system that is widely used for various applications. In this guide, we will walk you through the installation and basic usage of PostgreSQL 13 on Rocky Linux.
Step 1: Update Your System
Before starting the installation, ensure your system is up to date:
sudo dnf update -yStep 2: Install PostgreSQL 13
To install PostgreSQL 13, execute the following command:
sudo dnf install -y postgresql13 postgresql13-serverStep 3: Initialize the Database
After installation, you need to initialize the PostgreSQL database:
sudo /usr/pgsql-13/bin/postgresql13-setup initdbStep 4: Start and Enable PostgreSQL Service
Start the PostgreSQL service and enable it to start on boot:
sudo systemctl start postgresql-13
sudo systemctl enable postgresql-13Step 5: Configure PostgreSQL to Allow Remote Access (Optional)
If you need to access PostgreSQL remotely, edit the configuration file:
sudo nano /var/lib/pgsql/13/data/postgresql.confUncomment and change the following line:
listen_addresses = '*'Next, edit the pg_hba.conf file to allow connections:
sudo nano /var/lib/pgsql/13/data/pg_hba.confAdd the following line at the end of the file to allow access from any IP:
host all all 0.0.0.0/0 md5Step 6: Restart PostgreSQL
Restart PostgreSQL to apply the changes:
sudo systemctl restart postgresql-13Step 7: Access PostgreSQL
To access PostgreSQL, switch to the postgres user:
sudo -i -u postgresThen, access the PostgreSQL shell:
psqlYou can now start creating databases and managing your data!
Conclusion
You have successfully installed and set up PostgreSQL 13 on Rocky Linux. This robust database system will help you manage your data efficiently.
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