Difference between revisions of "Ntp"
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imported>ThorstenStaerk (Synchronize time) |
imported>ThorstenStaerk |
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= Show time offset from time server = | = Show time offset from time server = | ||
| − | # sntp timeserver.mycompany.com | + | # sntp ''timeserver.mycompany.com'' |
| − | + | 2014-02-18 10:09:11.391178 (-0100) '''+6.45592''' +/- 0.000427 secs | |
| + | |||
| + | Means that ''timeserver.mycompany.com'' is 6.5 seconds in the future compared to the local clock. | ||
= Query status = | = Query status = | ||
Revision as of 09:12, 18 February 2014
NTP is the network time protocol. It allows you to fetch the current date/time from an internet time server. You can also use it to provide a network time service.
Synchronize time
To sync the time with the time server ntp.company.com use the command
sntp -P no -r ntp.company.com
Show time offset from time server
# sntp timeserver.mycompany.com 2014-02-18 10:09:11.391178 (-0100) +6.45592 +/- 0.000427 secs
Means that timeserver.mycompany.com is 6.5 seconds in the future compared to the local clock.
Query status
# /etc/init.d/ntp status
remote refid st t when poll reach delay offset jitter
==============================================================================
*timehost1.local .PPS. 1 u 356 1024 377 1.404 0.049 0.154
Checking for network time protocol daemon (NTPD): running
Configure it
Edit /etc/ntp.conf, add your time server like this:
server myserver.domain
