intoduction
time between domain controller and any server in network should be identical
different in time between network servers could cause error in responding to client users
SLES Network Diagram
ALL SLES servers should have time settings from domain controller to make sure ALL services working properly
SLES NTP
The NTP (network time protocol) mechanism is a protocol for synchronizing the system time over the network.
a machine can obtain the time from a server that is a reliable time source [ Mainly domain controller DC101.pioneers.lab
a SLES can itself act as a time source for other computers in the network > which will be discussed later
Configure SLES as NTP client with Yast
- Click Other Settings to set date and time.
- Select Synchronize with NTP Server.
- Enter the address of an NTP server, if not already populated.
- Click Synchronize Now to get your system time set correctly.
- To use NTP permanently, enable Save NTP Configuration.
- With the Configure button, you can open the advanced NTP configuration.
- Confirm your changes.
Configuring SLES as NTP Client with Next Mode
The easiest way to use a time server in the network is to set server parameters.
In our case time server called DC101.pioneers.lab is reachable from the network,
add its name to the file /etc/ntp.conf by adding the following line:
server DC101.pioneers.lab
or server 172.16.100.101
After initializing ntpd with the command
systemctl start ntpd 
