Controller node

Perform these steps on the controller node.

Install and configure components

Install the packages:

ubuntu or debian

# apt install chrony

rdo

# yum install chrony

obs

# zypper install chrony

ubuntu or debian

Edit the /etc/chrony/chrony.conf file and add, change, or remove these keys as necessary for your environment:
```
server NTP_SERVER iburst
```
Replace NTP_SERVER with the hostname or IP address of a suitable more accurate (lower stratum) NTP server. The configuration supports multiple server keys.

Note

By default, the controller node synchronizes the time via a pool of public servers. However, you can optionally configure alternative servers such as those provided by your organization.
To enable other nodes to connect to the chrony daemon on the controller node, add this key to the /etc/chrony/chrony.conf file:
```
allow 10.0.0.0/24
```
Restart the NTP service:
```
# service chrony restart
```

rdo or obs

Edit the /etc/chrony.conf file and add, change, or remove these keys as necessary for your environment:
```
server NTP_SERVER iburst
```
Replace NTP_SERVER with the hostname or IP address of a suitable more accurate (lower stratum) NTP server. The configuration supports multiple server keys.

Note

By default, the controller node synchronizes the time via a pool of public servers. However, you can optionally configure alternative servers such as those provided by your organization.
To enable other nodes to connect to the chrony daemon on the controller node, add this key to the /etc/chrony.conf file:
```
allow 10.0.0.0/24
```
If necessary, replace 10.0.0.0/24 with a description of your subnet.
Start the NTP service and configure it to start when the system boots:
```
# systemctl enable chronyd.service
# systemctl start chronyd.service
```