NetScaler NTP Synchronization

Here is a brief insight on how to configure and troubleshoot NTP synchronization on NetScaler.

To add an NTP server to NetScaler navigate to System -> NTP Servers -> Add.

Open putty and type shell -> date – This confirms the current date and time on the NetScaler device.2-min

Type ntpdate -q ntpservername/ip – This queries the specified NTP server. If NTP communication (UDP 123) is blocked because of firewalls or the NetScaler cannot route to the NTP server you will get a message such as “No server suitable for synchronization found”.


If you find that your NetScaler is out of sync with one of your configured NTP servers (due to large time offset) run the following commands:

ps axfu | grep ntp (you won’t get any results if you have no servers configured under NTP in NetScaler) 3-min

kill 7943 (this is the process ID found above) 4-min

ntpdate ntpservername/ip5-min

/usr/sbin/ntpd -c /nsconfig/ntp.conf -l /var/log/ntpd.log 6-min

ps axfu | grep ntp (This confirms NTP is back up and running) 7-min

Typing date confirms the date and time is now in sync with the NTP server.8-min

You can refer to the ntpd.log file found under /var/log to view logged NTP information.9-min


One Comments

  • M. Heath Garner

    May 22, 2017

    Worked perfectly for me. Thank you


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