How to force sync with ntp server

Products

• Security Information Manager

Issue/Introduction

Time on the SSIM appliance is incorrect and not in sync with the ntp-server that was configured in the webUI.

Environment

Security Information Manager 

Cause

NTP Time Sync Off

Resolution

1. login to the SSIM with a SSH client or the console
2. become "root" via:  su -
3. run the following commands:
   # service ntpd stop
   # ntpdate -u ntp_server_ip
   (replace ntp_server_ip with your actual NTP-Server IP or name)
   # service ntpd start

If you want to check the current ntp settings, you can use ntpq command:
# ntpq -p

It lists all configured ntp-servers and highlights the current one in use.

 

 

 

Additional Information

NTP services need 3 NTP servers for optimum operation.

Reference: https://www.pool.ntp.org/join/configuration.html

To work properly ntpd needs to talk to at least 3 servers ("A man with a watch knows what time it is. A man with two watches is never sure").

For servers in the pool we recommend configuring no less than 3 and no more than 7 servers.