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Difference between revisions of "Package:Ntp"
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|Homepage=http://www.ntp.org/ | |Homepage=http://www.ntp.org/ | ||
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=== Installation === | === Installation === | ||
To install the NTP client and server, run the following command: | |||
{{console|body= | {{console|body= | ||
###i## emerge net-misc/ntp | ###i## emerge net-misc/ntp | ||
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=== Runtime === | === Runtime === | ||
If you are interested only in synchronizing your local clock against servers, then only add {{c|ntp-client}} to your list of services to start at boot: | |||
{{console|body= | |||
###i## rc-updated add ntp-client | |||
}} | |||
After adding the {{c|ntp-client}} service to the {{c|default}} runlevel, the service can be started by executing the {{c|rc}} command as root: | |||
{{console|body= | |||
###i## rc | |||
##g##* ##!g##Setting the clock via the NTP client 'ntpdate' ... ##bl##[##!bl## ##g##OK##!g## ##bl##]##!bl## | |||
}} | |||
{{note|Executing the above command normally takes several seconds}} | |||
If you are instead interested in running an NTP server, add {{c|ntpd}} to your list of services to execute at boot: | |||
{{console|body= | {{console|body= | ||
###i## rc-update add ntpd | ###i## rc-update add ntpd | ||
}} | }} | ||
{{note|{{c|ntpd}} serves as both a client and a server}} | |||
==== Hardware Clock ==== | ==== Hardware Clock ==== | ||
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=== External Resources === | === External Resources === | ||
http://keetweej.vanheusden.com/query_ntp.php | http://keetweej.vanheusden.com/query_ntp.php | ||
{{EbuildFooter}} | {{EbuildFooter}} | ||
Revision as of 16:05, June 21, 2015
Ntp
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Installation
To install the NTP client and server, run the following command:
root # emerge net-misc/ntp
Configuration
Client
The ntp-client command immediately synchronizes your clock, and has separate ntp sync settings from the daemon:
/etc/conf.d/ntp-client - setting ntp-client upstream serversNTPCLIENT_OPTS="-s -b -u \ 0.pool.ntp.org 1.pool.ntp.org \ 2.pool.ntp.org 3.pool.ntp.org"
Server
The ntpd server is also an ntp-client of upstream servers. Ntpd continuously, and gradually synchronizes the local clock.
/etc/ntp.conf - setting ntpd upstream servers# Pools for Gentoo users server 0.pool.ntp.org server 1.pool.ntp.org server 2.pool.ntp.org server 3.pool.ntp.org
Runtime
If you are interested only in synchronizing your local clock against servers, then only add ntp-client to your list of services to start at boot:
root # rc-updated add ntp-client
After adding the ntp-client service to the default runlevel, the service can be started by executing the rc command as root:
root # rc root ##g##* ##!g##Setting the clock via the NTP client 'ntpdate' ... [ OK ]
Executing the above command normally takes several seconds
If you are instead interested in running an NTP server, add ntpd to your list of services to execute at boot:
root # rc-update add ntpd
ntpd serves as both a client and a server
Hardware Clock
To write your NTP sync time to the hardware at shutdown, and read hw clock at start.
root # echo 'clock_hctosys="YES"' >> /etc/conf.d/hwclock root # echo 'clock_systohc="YES"' >> /etc/conf.d/hwclock root # rc-service hwclock restart root # rc-update add hwclock boot
External Resources
http://keetweej.vanheusden.com/query_ntp.php