Question: how to configure ntp server in linux ubuntu?
Answer: Step 1: Update repository index. ... 
Step 2: Install NTP Server with apt-get. ... 
Step 3: Verify installation (optional) ... 
Step 4: Switch to an NTP server pool closest to your location. ... 
Step 5: Restart the NTP server. ... 
Step 6: Verify that the NTP Server is running.