Rocky Linux

How to Configure the NTP Time on Rocky Linux 9

Network Time Protocol or NTP, synchronizes the time on the network or computers. NTP allows the system to ensure consistent and reliable timekeeping, which is essential for different factors such as security, operation, compliance, and coordination. This technology applies to both protocol and client-server programs running on the computer.

NTP regularly communicates with the particular server to maintain time sync accurately. Furthermore, NTP servers utilize network measurements and algorithms to evaluate the accurate time. However, as a Linux user, you must configure the NTP before using it properly. So in this guide, we will explain the brief method to install and configure NTP time on Rocky Linux 9 (RHEL-based OS).

How to Configure the NTP Time on Rocky Linux 9

Before configuring NTP, please run the following command to ensure that the system is up-to-date:

sudo dnf update

Once you are done with the update, check the current timezone through the below command:



As the above image shows, the time zone of the current device is America/New_York. However, if you want to change the time, please run the following commands one by one:

sudo timedatectl set-ntp n
sudo timedatectl set-time 12:49:00

In the above command, 12:49:00 is current to which we want to implement in the device:



Now you can sync the NTP time with the current timezone by running the below command:

sudo timedatectl set-ntp on


Once you activate the NTP service, it is time to configure the NTP service using Chrony. Although Chrony is already available in Rocky Linux 9, if you want to install it, then please run the below command:

sudo dnf install chrony


Now, start, enable, and check the status of Chrony by executing the following commands one by one:

sudo systemctl start chronyd
sudo systemctl enable chronyd
sudo systemctl status chronyd


After enabling the Chrony server, you can configure the Chrony as per the current time and region. If you want to know the active server of NTP, please visit the official website of the NTP server to get the information. For example, let’s configure the system according to the Asia time zone.

Please run the below command to open the Chrony config file:

sudo vi /etc/chrony.conf


Here, you need to add # before the “pool 2.rocky.pool….” line and then add the servers:

Once you are done, please save the file and exit the config file. Now you can enable the NTP sync by running the below command:

sudo timedatectl set-ntp true


You can also restart the Chrony service to make changes successful:

sudo systemctl restart chronyd


Finally, you can run the below command to display the Chronyd tracking that shows the complete statistics about the system:

chronyc tracking


Furthermore, you can use the chronyc sources command to verify that NTP is using Chrony for the time sync:

Configure the NTP Server

If you want to go one step further, use an NTP server for Chrony Synchronization. So open the Chrony config file again and add the IP address of the server that corresponds to the NTP:

sudo vi /etc/chrony.conf


Now again restart the server and display the Chronyd tracking and receiving the time from the NTP server:

sudo systemctl restart chronyd
chronyc tracking



So this is how you can configure the NTP time on Rocky Linux 9. We have included various methods to set up the NTP time from the local machine and receive the time from the NTP server. Moreover, we recommend you use the commands carefully, or else you may get errors while using Chrony services.

About the author

Prateek Jangid

A passionate Linux user for personal and professional reasons, always exploring what is new in the world of Linux and sharing with my readers.