How to make NTP work despite a high offset?

ujjain asked:

Recently I have kickstarted some servers that had their time off by a month in the bios. The time in the bios said it was a random time/date in May, while it was June.

This caused NTP not to work, because NTP doesn’t sync with such a high offset. How can I make sure that NTP syncs despite the offset, in this case a month, being too high?

My answer:

For EL5 and EL6:

Start ntpdate as well.

It should be sufficient to enable them in your kickstart.

chkconfig ntpdate on
chkconfig ntpd on

View the full question and any other answers on Server Fault.

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.