knowledgebase/linux/miscapplications/ntp 1. Time out of Sync on NTPd server? NTPd synchronizes a servers time with an external time source. Keeping it up to date. Sometimes servers that are running ntpd get out of sync. In these cases restarting ntp regularly (weekly/monthly?) may help. e.g. in this case there were no peers found when we first looked (the peers only appeared after an ntpd restart). {code} [root@host82 ~]# ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== *LOCAL(0) LOCAL(0) 10 l 41 64 377 0.000 0.000 0.001 # /etc/init.d/ntpd restart Shutting down ntpd: [ OK ] Starting ntpd: [ OK ] # ntpq -p remote refid st t when poll reach delay offset jitter ============================================================================== ad.67.1343.stat 132.163.4.103 2 u 1 64 1 3.094 -41335. 0.001 mail.landrin.ru .INIT. 16 u - 64 0 0.000 0.000 4000.00 vine.desynched. .INIT. 16 u - 64 0 0.000 0.000 4000.00 LOCAL(0) LOCAL(0) 10 l - 64 0 0.000 0.000 4000.00 {code} It seems like ntpd establishes its peers when it first starts up. Perhaps if there is a dns issue causing the ntp peer to not be found at that time the peer may not be used? Also perhaps if a peer stops responding for a long period it will not be kicked out of the server list and replaced with another? e.g. a good ntp server to use can be from ntps pooled servers: 0.pool.ntp.org, 1.pool.ntp.org, etc. 2007-08-20 22:40:44.0 2007-08-20 22:40:44.0