How to Start, Stop, and Restart the PostgreSQL on a Linux CentOS System

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.

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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.

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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.

Commands Mentioned:

  • 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.
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Conclusion

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.

Please feel free to leave comments and suggest improvements to this guide. Your feedback is valuable and helps us improve our content for our audience.

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