PostgreSQL is a widely used, powerful, and open-source relational database management system.
In this short tutorial, we will demonstrate how to start, stop, and restart the PostgreSQL database server on a Linux CentOS system.
Please note that this guide assumes you have already installed PostgreSQL on your CentOS system. If you haven’t installed it yet, you can follow the official installation instructions: https://www.postgresql.org/download/linux/redhat/.
Start the PostgreSQL Service
To start the PostgreSQL service, run the following command:
sudo systemctl start postgresql
This command starts the PostgreSQL service, allowing you to interact with your databases.
Stop the PostgreSQL Service
To stop the PostgreSQL service, execute the following command:
sudo systemctl stop postgresql
Stopping the PostgreSQL service will close all active connections to the databases and shut down the server.
Restart the PostgreSQL Service
If you need to restart the PostgreSQL service, you can do so with the following command:
sudo systemctl restart postgresql
This command stops the PostgreSQL service, then starts it again. Restarting the service can be useful for applying configuration changes or troubleshooting issues.
Check the PostgreSQL Service Status
To verify the status of the PostgreSQL service, run the following command:
sudo systemctl status postgresql
This command will display the current status of the PostgreSQL service, showing whether it is running, stopped, or has encountered an error.
- sudo systemctl start postgresql – Starts the PostgreSQL service.
- sudo systemctl stop postgresql – Stops the PostgreSQL service.
- sudo systemctl restart postgresql – Restarts the PostgreSQL service.
- sudo systemctl status postgresql – Checks the status of the PostgreSQL service.
In this guide, we have shown you how to start, stop, and restart the PostgreSQL database server on a Linux CentOS system. These commands are essential for managing your PostgreSQL service, applying configuration changes, and troubleshooting issues. By understanding how to control the PostgreSQL service, you can ensure a stable and efficient database environment.
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