How to change the hostname in CentOS 7

[qasimumer]

Hello everyone,

In this thread, I'd like to discuss how to change the hostname in CentOS 7. Changing the hostname in CentOS 7 is a simple process, but it can have a big impact on your system, so it's important to be careful and follow the steps correctly.

Here are the steps to change the hostname in CentOS 7:

1. Log in to your CentOS 7 system as the root user.
2. Open a terminal window.
3. Run the following command to open the hostname configuration file:

bashCopy code
sudo nano /etc/hostname

1. Replace the current hostname with the desired hostname and save the file.
2. Next, edit the /etc/hosts file:

bashCopy code
sudo nano /etc/hosts

1. Replace the old hostname with the new hostname in the file.
2. Save the changes and exit the file.
3. Finally, run the following command to apply the changes:

Copy code
sudo hostname new_hostname

Where new_hostname is the hostname you just set in the hostname configuration file.

That's it! You have successfully changed the hostname in CentOS 7.

Note: Before making any changes to your system, it's always a good idea to backup your data and configuration files to prevent any potential data loss.

I hope this helps those of you who are looking to change the hostname in CentOS 7. If you have any questions or concerns, feel free to ask.

Best regards,
Qasim.