Manually Configuring NTP in the Network
The easiest way to use a time server in the network is to set server parameters. For example, if a time server called
ntp.example.com is reachable from the network, add its name to the file
/etc/ntp.conf by adding the following line:
Dynamic Time Synchronization at Runtime
If the system boots without network connection,
ntpd starts up, but it cannot resolve DNS names of the time servers set in the configuration file. This can happen if you use Network Manager with an encrypted WLAN.
If you want
ntpd to resolve DNS names at runtime, you must set the
dynamic option. Then, when the network is establish some time after booting,
ntpd looks up the names again and can reach the time servers to get the time.
/etc/ntp.conf and add
dynamic to one or more
server ntp.example.com dynamic
Or use YaST and proceed as follows:
- In YaST click Network Services › NTP Configuration.
- Select the server you want to configure. Then click Edit.
- Activate the Options field and add
dynamic. Separate it with a space, if there are already other options entered.
- Click Ok to close the edit dialog. Repeat the previous step to change all servers as wanted.
- Finally click Ok to save the settings.
Source : https://documentation.suse.com/