Mailinglist Archive: opensuse (2700 mails)

[Aldrik KLEBER <aldrik.kleber@xxxxxxxxxx>]

this is a very bad idea to put an ntpdate in a crontab because : 
1) a lot of ntpd server closed their public access because of that, because a 
lot of ntpdate synchronize not in a random manner but in a synchronised 
manner, at the same time.
2) the time can go back (set from 10:04:57 to 10:01:32), wich is critical for 
mail servers,


if the drift is growing a lot, their may a reason, a hardware problem or  a 
connection problem too, that's why it is important  to  set an indisciplined 
local clock first and when the clock is drifting a lot, the burst and iburst 
options can be set in order to force ntpd to increase the frequency of his 
adjustments.
 like :

server 127.127.1.0  
fudge 127.127.1.0  stratum 10 
server 147.210.1.1 burst iburst // burst and ibirst to force a stronger 
                                                        //adjustment
driftfile /var/lib/ntp/ntp.drift
logfile /var/log/ntp.log