1. Through the XenServer graphical interface settings, refer to the https://support.citrix.com/article/CTX121278
2. Via SSH settings
2.1 Display time and hardware time, query NTPD server status and boot is self-booting
2.2 Use the Ntpdate command to manually synchronize with the NTP server once, get the correct time to modify the/etc/ntp.conf, block the official NTP address, add the NTP server IP, and then start the NTP server for subsequent automatic synchronization
2.3 Listen for 123 ports to see if NTPD is working.
Additionally, when you view the NTP status, you may see the following
①unsynchronised Time Server re-starting polling server every 8 s
②unsynchronised polling server every 8 s
This is normal, and after the NTP server is configured, you need to wait 5-10 minutes to synchronize with the standard time configured in/etc/ntp.conf.
After a while, once again using the Ntpstat command to view the status, it will become the following normal result:
View NTP server status with Upper NTP
"Command" Ntpq-p
Remote: IP or hostname of native and upper NTP, "+" is preferred, "*" indicates secondary priority
refID: Refer to the previous level of NTP host address
St:stratum stratum
When: How many seconds ago the time has been synchronized
Poll: How many seconds after the next update
Reach: Number of updates that have been requested for the upper NTP server
Delay: Network Latency
Offset: Time compensation
Jitter: System time vs. BIOS difference
XenServer set the NTP server.
