Data Domain NTP Configuration
Below is information on how to setup a Data Domain appliance to work with the Network Time Protocol (NTP)
Check the NTP configuration
dd# ntp show config
NTP is currently enabled.
No NTP servers configured; using multicast mode.
Add a new timeserver to the list
dd# ntp add timeserver pool.ntp.org
Remote Time Servers:
pool.ntp.org
Check the NTP configuration
dd# ntp show config
NTP is currently enabled.
# Server
- ————
1 pool.ntp.org
- ————
Showing NTP servers configured manually.
I advise disabling and re-enabling the NTP service
dd# ntp disable
NTP disabled.
dd# ntp enable
NTP enabled.
Check the NTP status. It may take a while for NTP to query and update this information
# ntp status
Status Enabled
Current Clock Time Tue Oct 28 16:07:22.708 2008
Clock Last Synchronized Tue Oct 28 15:48:23.398 2008
Clock Last Synchronized With Time Server 208.53.158.34
Removing a timeserver from the list
dd# ntp del timeserver pool.ntp.org
Remote Time Servers:
(multicast)
Check the NTP configuration
dd# ntp show config
NTP is currently enabled.
No NTP servers configured; using multicast mode.
Note: Multiple timeservers can be used in the NTP configuration. This example only showed one. To add another, just follow “Add a new timeserver to the list” part again. It may take a while for the NTP service
Just as a note there is a bug in the Data Domain OS that will cause problems with NTP in version 5 min away from the AD time which causes Kerberos auth to fail.
Andrew said this on January 19, 2009 at 3:25 pm