NTP
From TBwiki
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You can use the following command to check if it's enabled:<br> | You can use the following command to check if it's enabled:<br> | ||
| − | <pre> | + | <pre> pgrep ntpd |
| − | + | </pre> | |
| − | + | ||
You can use the following command to enable NTP:<br> | You can use the following command to enable NTP:<br> | ||
<pre>yum install ntpd | <pre>yum install ntpd | ||
| − | chkconfig ntpd on | + | chkconfig ntpd on |
| − | + | service ntpd start | |
| − | + | ||
</pre> | </pre> | ||
| − | You can | + | Make sure your nameserver (DNS) is configured correctly (see [http://docs.telcobridges.com/mediawiki/index.php/TBLinux:How_to_change_the_ip_address Modify the dhcp client configuration]).<br> |
| + | |||
| + | You can change the servers to synchronize NTP in /etc/ntp.conf | ||
| + | |||
| + | You can change your local timezone with the /etc/localtime link<br> | ||
| + | |||
| + | To synchronize NTP: <br> | ||
<pre>ntpq -p</pre> | <pre>ntpq -p</pre> | ||
It will display a list of servers and the server which is currently synced should be prepended by a '*'. For example: | It will display a list of servers and the server which is currently synced should be prepended by a '*'. For example: | ||
| Line 18: | Line 22: | ||
+cheezum.mattnor 129.7.1.66 2 u 91 1024 377 45.715 1.504 47.753 | +cheezum.mattnor 129.7.1.66 2 u 91 1024 377 45.715 1.504 47.753 | ||
</pre> | </pre> | ||
| − | In this case the host's time is synced with | + | In this case the host's time is synced with barricade.rack9. |
Revision as of 16:39, 1 December 2010
You can use the following command to check if it's enabled:
pgrep ntpd
You can use the following command to enable NTP:
yum install ntpd chkconfig ntpd on service ntpd start
Make sure your nameserver (DNS) is configured correctly (see Modify the dhcp client configuration).
You can change the servers to synchronize NTP in /etc/ntp.conf
You can change your local timezone with the /etc/localtime link
To synchronize NTP:
ntpq -p
It will display a list of servers and the server which is currently synced should be prepended by a '*'. For example:
remote refid st t when poll reach delay offset jitter ============================================================================== *barricade.rack9 209.51.161.238 2 u 1001 1024 377 31.147 -0.369 20.074 +ip-72-167-42-82 204.123.2.5 2 u 754 1024 377 166.388 -29.692 28.223 +cheezum.mattnor 129.7.1.66 2 u 91 1024 377 45.715 1.504 47.753
In this case the host's time is synced with barricade.rack9.
